<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>UTas ePrints - Flow visualisation of the external flow from a converging slot-hole film-cooling geometry</title>
<script type="text/javascript" src="http://eprints.utas.edu.au/javascript/auto.js"><!-- padder --></script>
<style type="text/css" media="screen">@import url(http://eprints.utas.edu.au/style/auto.css);</style>
<style type="text/css" media="print">@import url(http://eprints.utas.edu.au/style/print.css);</style>
<link rel="icon" href="/images/eprints/favicon.ico" type="image/x-icon" />
<link rel="shortcut icon" href="/images/eprints/favicon.ico" type="image/x-icon" />
<link rel="Top" href="http://eprints.utas.edu.au/" />
<link rel="Search" href="http://eprints.utas.edu.au/cgi/search" />
<meta content="Sargison, Jane E." name="eprints.creators_name" />
<meta content="Oldfield, Martin L.G." name="eprints.creators_name" />
<meta content="Guo, S.M." name="eprints.creators_name" />
<meta content="Lock, Gary D." name="eprints.creators_name" />
<meta content="Rawlinson, Anton J." name="eprints.creators_name" />
<meta content="Jane.Sargison@utas.edu.au" name="eprints.creators_id" />
<meta content="" name="eprints.creators_id" />
<meta content="" name="eprints.creators_id" />
<meta content="" name="eprints.creators_id" />
<meta content="" name="eprints.creators_id" />
<meta content="article" name="eprints.type" />
<meta content="2007-10-22 12:22:47" name="eprints.datestamp" />
<meta content="2008-01-08 15:30:00" name="eprints.lastmod" />
<meta content="show" name="eprints.metadata_visibility" />
<meta content="Flow visualisation of the external flow from a converging slot-hole film-cooling geometry" name="eprints.title" />
<meta content="pub" name="eprints.ispublished" />
<meta content="290501" name="eprints.subjects" />
<meta content="290201" name="eprints.subjects" />
<meta content="restricted" name="eprints.full_text_status" />
<meta content="The original publication is available at http://www.springerlink.com/content/100416/" name="eprints.note" />
<meta content="This paper presents flow visualisation experiments
for a novel film-cooling hole, the converging
slot-hole or console for short. Previously published
experimental results have demonstrated that the console
improved both the heat transfer and the aerodynamic
performance of turbine vane and rotor blade cooling
systems. Flow visualisation data for a row of consoles
were compared with that of cylindrical and fan-shaped
holes and a slot at the same inclination angle of 35° to
the surface, on a large-scale, flat-plate model at enginerepresentative
Reynolds numbers in a low speed tunnel
with ambient temperature mainstream flow. In the first
set of experiments, the flow was visualised by using a fine
nylon mesh covered with thermochromic liquid crystals,
allowing the measurement of gas temperature contours
in planes perpendicular to the flow. This data demonstrated
that the console film was similar to a slot film,
and remained thin and attached to the surface for the
coolant-to-mainstream momentum flux ratios of 1.1 to
40 and for a case with no crossflow (infinite momentum
flux ratio). A second set of flow visualisation experiments
using water/dry-ice fog have confirmed these
results and have shown that the flow through all coolant
geometries is unsteady." name="eprints.abstract" />
<meta content="2005-03" name="eprints.date" />
<meta content="published" name="eprints.date_type" />
<meta content="Experiments in Fluids" name="eprints.publication" />
<meta content="38" name="eprints.volume" />
<meta content="3" name="eprints.number" />
<meta content="304-318" name="eprints.pagerange" />
<meta content="10.1007/s00348-004-0892-1" name="eprints.id_number" />
<meta content="TRUE" name="eprints.refereed" />
<meta content="0723-4864" name="eprints.issn" />
<meta content="http://dx.doi.org/10.1007/s00348-004-0892-1" name="eprints.official_url" />
<meta content="Day CRB, Oldfield MLG, Lock GD (2000) Aerodynamic performance of an annular cascade of film cooled nozzle guide vanes under engine representative conditions. Exp Fluids 29:117–129
Eckert ERG, Drake RM (1972) Analysis of heat and mass transfer. McGraw Hill, New York, pp 453–466
Ekkad SV, Zapata D, Han JC (1997a) Heat transfer coefficient
measurement over a flat surface with air and CO2 injection
through compound angle holes using a transient liquid crystal method. J Turbomach 119:580–586
Ekkad SV, Zapata D, Han JC (1997b) Film effectiveness measurement over a flat surface with air and CO2 injection through compound angle holes using a transient liquid crystal method. J Turbomach 119:587–592
Farmer JP, Seager DJ, Liburdy JA (1997) The effect of shaping inclined slots on film cooling effectiveness and heat transfer coefficient. ASME Paper 97-GT-399
Goldstein RJ, Eckert ERG, Ramsey JW (1968) Film cooling with
injection through holes: adiabatic wall temperatures downstream of a circular hole. J Eng Power 90:384–395
Gritsch M, Schulz A, Wittig S (1997) Discharge coefficient measurements of film cooling holes with expanded exits. ASME Paper 97-GT-165
Gritsch M, Schulz A, Wittig S (1998) Adiabatic wall effectiveness measurements of film cooling holes with expanded exits. J Turbomach 120:549–556
Ligrani P, Ciriello S, Bishop DT (1992) Heat transfer, adiabatic effectiveness and injectant distributions downstream of a single row and two staggered rows of compound angle film-cooling holes. J Turbomach 114:687–700
Mann C (2002) Flow visualisation of turbine blade film cooling. Final year project report, Department of Engineering Science, University of Oxford
Mee DJ, Ireland PT, Bather S (1999) Measurement of the temperature field downstream of simulated leading-edge filmcooling holes. Exp Fluids 27:273–283
Oldfield MLG, Lock GD (1998) Coolant passages for gas turbine components, UK patent application no. 9821639.3 (1998) for the new Console converging slot hole turbine film cooling hole geometry, University of Oxford, Oxford, UK
Sargison JE, Guo SM, Oldfield MLG, Lock GD, Rawlinson AJ
(2002a) A converging slot–hole film-cooling geometry. Part 1: low speed flat-plate heat transfer and loss. J Turbomach
124:453–460
Sargison JE, Guo SM, Oldfield MLG, Lock GD, Rawlinson AJ
(2002b) A converging slot–hole film-cooling geometry. Part 2: transonic guide vane heat transfer and loss. J Turbomach
124:461–471
Sargison JE, Guo SM, Oldfield MLG, Lock GD, Rawlinson AJ
(2002c) Flow visualisation of a converging slot–hole film-cooling geometry, ASME Paper GT-2002–30177
Schlichting H (1979) Boundary-layer theory, 7th edn. McGraw-
Hill, New York
Schmidt DL, Sen B, Bogard DG (1994) Film cooling with compound angle holes: adiabatic effectiveness. ASME Paper 94-
GT-312
Seban RA (1960) Heat transfer and effectiveness for a turbulent boundary layer with tangential fluid injection. J Heat Transfer 82:303–312
Sen B, Schmidt DL, Bogard DG (1996) Film cooling with compound angle holes: heat transfer. J Turbomach 118:800–806
Thole K, Gritsch M, Schulz A, Wittig S (1996) Flowfield measurements for film-cooling holes with expanded exits. J Turbomach
118:327–336
Wang Z, Ireland PT, Kohler ST (1996) Gas temperature measurement in internal cooling passages. ASME Paper 96-GT-534
Weighardt K (1943) Hot air discharge for de-icing (in German). ATI 24536 (original in Dt Luftfahrtforsch Forschungsber)" name="eprints.referencetext" />
<meta content="Sargison, Jane E. and Oldfield, Martin L.G. and Guo, S.M. and Lock, Gary D. and Rawlinson, Anton J. (2005) Flow visualisation of the external flow from a converging slot-hole film-cooling geometry. Experiments in Fluids, 38 (3). pp. 304-318. ISSN 0723-4864" name="eprints.citation" />
<meta content="http://eprints.utas.edu.au/2259/1/final_Exp_Fluids_2005.pdf" name="eprints.document_url" />
<link rel="schema.DC" href="http://purl.org/DC/elements/1.0/" />
<meta content="Flow visualisation of the external flow from a converging slot-hole film-cooling geometry" name="DC.title" />
<meta content="Sargison, Jane E." name="DC.creator" />
<meta content="Oldfield, Martin L.G." name="DC.creator" />
<meta content="Guo, S.M." name="DC.creator" />
<meta content="Lock, Gary D." name="DC.creator" />
<meta content="Rawlinson, Anton J." name="DC.creator" />
<meta content="290501 Mechanical Engineering" name="DC.subject" />
<meta content="290201 Aerodynamics" name="DC.subject" />
<meta content="This paper presents flow visualisation experiments
for a novel film-cooling hole, the converging
slot-hole or console for short. Previously published
experimental results have demonstrated that the console
improved both the heat transfer and the aerodynamic
performance of turbine vane and rotor blade cooling
systems. Flow visualisation data for a row of consoles
were compared with that of cylindrical and fan-shaped
holes and a slot at the same inclination angle of 35° to
the surface, on a large-scale, flat-plate model at enginerepresentative
Reynolds numbers in a low speed tunnel
with ambient temperature mainstream flow. In the first
set of experiments, the flow was visualised by using a fine
nylon mesh covered with thermochromic liquid crystals,
allowing the measurement of gas temperature contours
in planes perpendicular to the flow. This data demonstrated
that the console film was similar to a slot film,
and remained thin and attached to the surface for the
coolant-to-mainstream momentum flux ratios of 1.1 to
40 and for a case with no crossflow (infinite momentum
flux ratio). A second set of flow visualisation experiments
using water/dry-ice fog have confirmed these
results and have shown that the flow through all coolant
geometries is unsteady." name="DC.description" />
<meta content="2005-03" name="DC.date" />
<meta content="Article" name="DC.type" />
<meta content="PeerReviewed" name="DC.type" />
<meta content="application/pdf" name="DC.format" />
<meta content="http://eprints.utas.edu.au/2259/1/final_Exp_Fluids_2005.pdf" name="DC.identifier" />
<meta content="http://dx.doi.org/10.1007/s00348-004-0892-1" name="DC.relation" />
<meta content="Sargison, Jane E. and Oldfield, Martin L.G. and Guo, S.M. and Lock, Gary D. and Rawlinson, Anton J. (2005) Flow visualisation of the external flow from a converging slot-hole film-cooling geometry. Experiments in Fluids, 38 (3). pp. 304-318. ISSN 0723-4864" name="DC.identifier" />
<meta content="http://eprints.utas.edu.au/2259/" name="DC.relation" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2259/BibTeX/epprod-eprint-2259.bib" title="BibTeX" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2259/ContextObject/epprod-eprint-2259.xml" title="OpenURL ContextObject" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2259/ContextObject::Dissertation/epprod-eprint-2259.xml" title="OpenURL Dissertation" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2259/ContextObject::Journal/epprod-eprint-2259.xml" title="OpenURL Journal" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2259/DC/epprod-eprint-2259.txt" title="Dublin Core" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2259/DIDL/epprod-eprint-2259.xml" title="DIDL" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2259/EndNote/epprod-eprint-2259.enw" title="EndNote" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2259/HTML/epprod-eprint-2259.html" title="HTML Citation" type="text/html; charset=utf-8" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2259/METS/epprod-eprint-2259.xml" title="METS" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2259/MODS/epprod-eprint-2259.xml" title="MODS" type="text/xml" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2259/RIS/epprod-eprint-2259.ris" title="Reference Manager" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2259/Refer/epprod-eprint-2259.refer" title="Refer" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2259/Simple/epprod-eprint-2259text" title="Simple Metadata" type="text/plain" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2259/Text/epprod-eprint-2259.txt" title="ASCII Citation" type="text/plain; charset=utf-8" />
<link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2259/XML/epprod-eprint-2259.xml" title="EP3 XML" type="text/xml" />
</head>
<body bgcolor="#ffffff" text="#000000" onLoad="loadRoutine(); MM_preloadImages('images/eprints/ePrints_banner_r5_c5_f2.gif','images/eprints/ePrints_banner_r5_c7_f2.gif','images/eprints/ePrints_banner_r5_c8_f2.gif','images/eprints/ePrints_banner_r5_c9_f2.gif','images/eprints/ePrints_banner_r5_c10_f2.gif','images/eprints/ePrints_banner_r5_c11_f2.gif','images/eprints/ePrints_banner_r6_c4_f2.gif')">
<div class="ep_noprint"><noscript><style type="text/css">@import url(http://eprints.utas.edu.au/style/nojs.css);</style></noscript></div>
<table width="795" border="0" cellspacing="0" cellpadding="0">
<tr>
<td><script language="JavaScript1.2">mmLoadMenus();</script>
<table border="0" cellpadding="0" cellspacing="0" width="795">
<!-- fwtable fwsrc="eprints_banner_final2.png" fwbase="ePrints_banner.gif" fwstyle="Dreamweaver" fwdocid = "1249563342" fwnested="0" -->
<tr>
<td><img src="/images/eprints/spacer.gif" width="32" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="104" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="44" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="105" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="41" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="16" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="68" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="68" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="68" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="82" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="69" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="98" height="1" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="1" border="0" alt="" /></td>
</tr>
<tr>
<td colspan="12"><img name="ePrints_banner_r1_c1" src="/images/eprints/ePrints_banner_r1_c1.gif" width="795" height="10" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="10" border="0" alt="" /></td>
</tr>
<tr>
<td rowspan="6"><img name="ePrints_banner_r2_c1" src="/images/eprints/ePrints_banner_r2_c1.gif" width="32" height="118" border="0" alt="" /></td>
<td rowspan="5"><a href="http://www.utas.edu.au/"><img name="ePrints_banner_r2_c2" src="/images/eprints/ePrints_banner_r2_c2.gif" width="104" height="103" border="0" alt="" /></a></td>
<td colspan="10"><img name="ePrints_banner_r2_c3" src="/images/eprints/ePrints_banner_r2_c3.gif" width="659" height="41" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="41" border="0" alt="" /></td>
</tr>
<tr>
<td colspan="3"><a href="http://eprints.utas.edu.au/"><img name="ePrints_banner_r3_c3" src="/images/eprints/ePrints_banner_r3_c3.gif" width="190" height="31" border="0" alt="" /></a></td>
<td rowspan="2" colspan="7"><img name="ePrints_banner_r3_c6" src="/images/eprints/ePrints_banner_r3_c6.gif" width="469" height="37" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="31" border="0" alt="" /></td>
</tr>
<tr>
<td colspan="3"><img name="ePrints_banner_r4_c3" src="/images/eprints/ePrints_banner_r4_c3.gif" width="190" height="6" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="6" border="0" alt="" /></td>
</tr>
<tr>
<td colspan="2"><img name="ePrints_banner_r5_c3" src="/images/eprints/ePrints_banner_r5_c3.gif" width="149" height="1" border="0" alt="" /></td>
<td rowspan="2" colspan="2"><a href="/information.html" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821132634_0,0,25,null,'ePrints_banner_r5_c5');MM_swapImage('ePrints_banner_r5_c5','','/images/eprints/ePrints_banner_r5_c5_f2.gif',1);"><img name="ePrints_banner_r5_c5" src="/images/eprints/ePrints_banner_r5_c5.gif" width="57" height="25" border="0" alt="About" /></a></td>
<td rowspan="2"><a href="/view/" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133021_1,0,25,null,'ePrints_banner_r5_c7');MM_swapImage('ePrints_banner_r5_c7','','/images/eprints/ePrints_banner_r5_c7_f2.gif',1);"><img name="ePrints_banner_r5_c7" src="/images/eprints/ePrints_banner_r5_c7.gif" width="68" height="25" border="0" alt="Browse" /></a></td>
<td rowspan="2"><a href="/perl/search/simple" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133201_2,0,25,null,'ePrints_banner_r5_c8');MM_swapImage('ePrints_banner_r5_c8','','/images/eprints/ePrints_banner_r5_c8_f2.gif',1);"><img name="ePrints_banner_r5_c8" src="/images/eprints/ePrints_banner_r5_c8.gif" width="68" height="25" border="0" alt="Search" /></a></td>
<td rowspan="2"><a href="/perl/register" onMouseOut="MM_swapImgRestore();MM_startTimeout();" onMouseOver="MM_showMenu(window.mm_menu_1018171924_3,0,25,null,'ePrints_banner_r5_c9');MM_swapImage('ePrints_banner_r5_c9','','/images/eprints/ePrints_banner_r5_c9_f2.gif',1);"><img name="ePrints_banner_r5_c9" src="/images/eprints/ePrints_banner_r5_c9.gif" width="68" height="25" border="0" alt="register" /></a></td>
<td rowspan="2"><a href="/perl/users/home" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133422_4,0,25,null,'ePrints_banner_r5_c10');MM_swapImage('ePrints_banner_r5_c10','','/images/eprints/ePrints_banner_r5_c10_f2.gif',1);"><img name="ePrints_banner_r5_c10" src="/images/eprints/ePrints_banner_r5_c10.gif" width="82" height="25" border="0" alt="user area" /></a></td>
<td rowspan="2"><a href="/help/" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133514_5,0,25,null,'ePrints_banner_r5_c11');MM_swapImage('ePrints_banner_r5_c11','','/images/eprints/ePrints_banner_r5_c11_f2.gif',1);"><img name="ePrints_banner_r5_c11" src="/images/eprints/ePrints_banner_r5_c11.gif" width="69" height="25" border="0" alt="Help" /></a></td>
<td rowspan="3" colspan="4"><img name="ePrints_banner_r5_c12" src="/images/eprints/ePrints_banner_r5_c12.gif" width="98" height="40" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="1" border="0" alt="" /></td>
</tr>
<tr>
<td rowspan="2"><img name="ePrints_banner_r6_c3" src="/images/eprints/ePrints_banner_r6_c3.gif" width="44" height="39" border="0" alt="ePrints home" /></td>
<td><a href="/" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('ePrints_banner_r6_c4','','/images/eprints/ePrints_banner_r6_c4_f2.gif',1);"><img name="ePrints_banner_r6_c4" src="/images/eprints/ePrints_banner_r6_c4.gif" width="105" height="24" border="0" alt="ePrints home" /></a></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="24" border="0" alt="" /></td>
</tr>
<tr>
<td><img name="ePrints_banner_r7_c2" src="/images/eprints/ePrints_banner_r7_c2.gif" width="104" height="15" border="0" alt="" /></td>
<td colspan="8"><img name="ePrints_banner_r7_c4" src="/images/eprints/ePrints_banner_r7_c4.gif" width="517" height="15" border="0" alt="" /></td>
<td><img src="/images/eprints/spacer.gif" width="1" height="15" border="0" alt="" /></td>
</tr>
</table></td>
</tr>
<tr><td><table width="100%" style="font-size: 90%; border: solid 1px #ccc; padding: 3px"><tr>
<td align="left"><a href="http://eprints.utas.edu.au/cgi/users/home">Login</a> | <a href="http://eprints.utas.edu.au/cgi/register">Create Account</a></td>
<td align="right" style="white-space: nowrap">
<form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/search" style="display:inline">
<input class="ep_tm_searchbarbox" size="20" type="text" name="q" />
<input class="ep_tm_searchbarbutton" value="Search" type="submit" name="_action_search" />
<input type="hidden" name="_order" value="bytitle" />
<input type="hidden" name="basic_srchtype" value="ALL" />
<input type="hidden" name="_satisfyall" value="ALL" />
</form>
</td>
</tr></table></td></tr>
<tr>
<td class="toplinks"><!-- InstanceBeginEditable name="content" -->
<div align="center">
<table width="720" class="ep_tm_main"><tr><td align="left">
<h1 class="ep_tm_pagetitle">Flow visualisation of the external flow from a converging slot-hole film-cooling geometry</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Sargison, Jane E.</span> and <span class="person_name">Oldfield, Martin L.G.</span> and <span class="person_name">Guo, S.M.</span> and <span class="person_name">Lock, Gary D.</span> and <span class="person_name">Rawlinson, Anton J.</span> (2005) <xhtml:em>Flow visualisation of the external flow from a converging slot-hole film-cooling geometry.</xhtml:em> Experiments in Fluids, 38 (3). pp. 304-318. ISSN 0723-4864</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2259/1/final_Exp_Fluids_2005.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2259/1/final_Exp_Fluids_2005.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />1399Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="2844" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1007/s00348-004-0892-1">http://dx.doi.org/10.1007/s00348-004-0892-1</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">This paper presents flow visualisation experiments
for a novel film-cooling hole, the converging
slot-hole or console for short. Previously published
experimental results have demonstrated that the console
improved both the heat transfer and the aerodynamic
performance of turbine vane and rotor blade cooling
systems. Flow visualisation data for a row of consoles
were compared with that of cylindrical and fan-shaped
holes and a slot at the same inclination angle of 35° to
the surface, on a large-scale, flat-plate model at enginerepresentative
Reynolds numbers in a low speed tunnel
with ambient temperature mainstream flow. In the first
set of experiments, the flow was visualised by using a fine
nylon mesh covered with thermochromic liquid crystals,
allowing the measurement of gas temperature contours
in planes perpendicular to the flow. This data demonstrated
that the console film was similar to a slot film,
and remained thin and attached to the surface for the
coolant-to-mainstream momentum flux ratios of 1.1 to
40 and for a case with no crossflow (infinite momentum
flux ratio). A second set of flow visualisation experiments
using water/dry-ice fog have confirmed these
results and have shown that the flow through all coolant
geometries is unsteady.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Additional Information:</th><td valign="top" class="ep_row">The original publication is available at http://www.springerlink.com/content/100416/</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/290501.html">290000 Engineering and Technology > 290500 Mechanical and Industrial Engineering > 290501 Mechanical Engineering</a><br /><a href="http://eprints.utas.edu.au/view/subjects/290201.html">290000 Engineering and Technology > 290200 Aerospace Engineering > 290201 Aerodynamics</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2259</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Dr Jane Sargison</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">22 Oct 2007 23:22</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2259;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=2259">item control page</a></p>
</td></tr></table>
</div>
<!-- InstanceEndEditable --></td>
</tr>
<tr>
<td><!-- #BeginLibraryItem "/Library/footer_eprints.lbi" -->
<table width="795" border="0" align="left" cellpadding="0" class="footer">
<tr valign="top">
<td colspan="2"><div align="center"><a href="http://www.utas.edu.au">UTAS home</a> | <a href="http://www.utas.edu.au/library/">Library home</a> | <a href="/">ePrints home</a> | <a href="/contact.html">contact</a> | <a href="/information.html">about</a> | <a href="/view/">browse</a> | <a href="/perl/search/simple">search</a> | <a href="/perl/register">register</a> | <a href="/perl/users/home">user area</a> | <a href="/help/">help</a></div><br /></td>
</tr>
<tr><td colspan="2"><p><img src="/images/eprints/footerline.gif" width="100%" height="4" /></p></td></tr>
<tr valign="top">
<td width="68%" class="footer">Authorised by the University Librarian<br />
© University of Tasmania ABN 30 764 374 782<br />
<a href="http://www.utas.edu.au/cricos/">CRICOS Provider Code 00586B</a> | <a href="http://www.utas.edu.au/copyright/copyright_disclaimers.html">Copyright & Disclaimers</a> | <a href="http://www.utas.edu.au/accessibility/index.html">Accessibility</a> | <a href="http://eprints.utas.edu.au/feedback/">Site Feedback</a> </td>
<td width="32%"><div align="right">
<p align="right" class="NoPrint"><a href="http://www.utas.edu.au/"><img src="http://www.utas.edu.au/shared/logos/unioftasstrip.gif" alt="University of Tasmania Home Page" width="260" height="16" border="0" align="right" /></a></p>
<p align="right" class="NoPrint"><a href="http://www.utas.edu.au/"><br />
</a></p>
</div></td>
</tr>
<tr valign="top">
<td><p> </p></td>
<td><div align="right"><span class="NoPrint"><a href="http://www.eprints.org/software/"><img src="/images/eprintslogo.gif" alt="ePrints logo" width="77" height="29" border="0" align="bottom" /></a></span></div></td>
</tr>
</table>
<!-- #EndLibraryItem -->
<div align="center"></div></td>
</tr>
</table>
</body>
</html>
