Laminar Flow Gas Turbine Regenerators--The Influence of Manufacturing Tolerances
Several current designs for high effectiveness gas turbine regenerators involve low Reynolds No. fully-developed laminar-flow type surfaces. Such surfaces consist of cylindrical flow passages, of small hydraulic radius, in parallel and the cylinder geometry may, as examples, be triangular, as in som...
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| description | Several current designs for high effectiveness gas turbine regenerators involve low Reynolds No. fully-developed laminar-flow type surfaces. Such surfaces consist of cylindrical flow passages, of small hydraulic radius, in parallel and the cylinder geometry may, as examples, be triangular, as in some glass-ceramic surfaces, or rectangular, as in deep-fold metal foil surfaces. This presentation demonstrates that manufacturing tolerances of several thousandths of an inch in passage dimension have a significant influence on the overall heat transfer and flow friction behavior. The analysis is also useful in rationalizing the difference between theory and test results for the basic heat transfer (j factor) characteristics as a function of Reynolds No. for various surfaces of the laminar-flow type. (Author) |
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Such surfaces consist of cylindrical flow passages, of small hydraulic radius, in parallel and the cylinder geometry may, as examples, be triangular, as in some glass-ceramic surfaces, or rectangular, as in deep-fold metal foil surfaces. This presentation demonstrates that manufacturing tolerances of several thousandths of an inch in passage dimension have a significant influence on the overall heat transfer and flow friction behavior. The analysis is also useful in rationalizing the difference between theory and test results for the basic heat transfer (j factor) characteristics as a function of Reynolds No. for various surfaces of the laminar-flow type. (Author)</description><language>eng</language><subject>GAS TURBINE REGENERATORS ; GEOMETRIC FORMS ; HEAT EXCHANGERS ; HEAT TRANSFER ; Jet and Gas Turbine Engines ; LAMINAR FLOW ; MANUFACTURING ; Mfg & Industrial Eng & Control of Product Sys ; REYNOLDS NUMBER ; SKIN FRICTION ; SURFACE PROPERTIES ; TEST METHODS ; TOLERANCES(MECHANICS)</subject><creationdate>1968</creationdate><rights>APPROVED FOR PUBLIC RELEASE</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,776,881,27544,27545</link.rule.ids><linktorsrc>$$Uhttps://apps.dtic.mil/sti/citations/AD0844002$$EView_record_in_DTIC$$FView_record_in_$$GDTIC$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>London, A L</creatorcontrib><creatorcontrib>STANFORD UNIV CA DEPT OF MECHANICAL ENGINEERING</creatorcontrib><title>Laminar Flow Gas Turbine Regenerators--The Influence of Manufacturing Tolerances</title><description>Several current designs for high effectiveness gas turbine regenerators involve low Reynolds No. fully-developed laminar-flow type surfaces. Such surfaces consist of cylindrical flow passages, of small hydraulic radius, in parallel and the cylinder geometry may, as examples, be triangular, as in some glass-ceramic surfaces, or rectangular, as in deep-fold metal foil surfaces. This presentation demonstrates that manufacturing tolerances of several thousandths of an inch in passage dimension have a significant influence on the overall heat transfer and flow friction behavior. The analysis is also useful in rationalizing the difference between theory and test results for the basic heat transfer (j factor) characteristics as a function of Reynolds No. for various surfaces of the laminar-flow type. (Author)</description><subject>GAS TURBINE REGENERATORS</subject><subject>GEOMETRIC FORMS</subject><subject>HEAT EXCHANGERS</subject><subject>HEAT TRANSFER</subject><subject>Jet and Gas Turbine Engines</subject><subject>LAMINAR FLOW</subject><subject>MANUFACTURING</subject><subject>Mfg & Industrial Eng & Control of Product Sys</subject><subject>REYNOLDS NUMBER</subject><subject>SKIN FRICTION</subject><subject>SURFACE PROPERTIES</subject><subject>TEST METHODS</subject><subject>TOLERANCES(MECHANICS)</subject><fulltext>true</fulltext><rsrctype>report</rsrctype><creationdate>1968</creationdate><recordtype>report</recordtype><sourceid>1RU</sourceid><recordid>eNrjZAjwSczNzEssUnDLyS9XcE8sVggpLUrKzEtVCEpNT81LLUosyS8q1tUNyUhV8MxLyylNzUtOVchPU_BNzCtNS0wuKS3KzEtXCMnPASoFShXzMLCmJeYUp_JCaW4GGTfXEGcP3ZSSzOT44hKg0SXxji4GFiYmBgZGxgSkARynM8M</recordid><startdate>196808</startdate><enddate>196808</enddate><creator>London, A L</creator><scope>1RU</scope><scope>BHM</scope></search><sort><creationdate>196808</creationdate><title>Laminar Flow Gas Turbine Regenerators--The Influence of Manufacturing Tolerances</title><author>London, A L</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-dtic_stinet_AD08440023</frbrgroupid><rsrctype>reports</rsrctype><prefilter>reports</prefilter><language>eng</language><creationdate>1968</creationdate><topic>GAS TURBINE REGENERATORS</topic><topic>GEOMETRIC FORMS</topic><topic>HEAT EXCHANGERS</topic><topic>HEAT TRANSFER</topic><topic>Jet and Gas Turbine Engines</topic><topic>LAMINAR FLOW</topic><topic>MANUFACTURING</topic><topic>Mfg & Industrial Eng & Control of Product Sys</topic><topic>REYNOLDS NUMBER</topic><topic>SKIN FRICTION</topic><topic>SURFACE PROPERTIES</topic><topic>TEST METHODS</topic><topic>TOLERANCES(MECHANICS)</topic><toplevel>online_resources</toplevel><creatorcontrib>London, A L</creatorcontrib><creatorcontrib>STANFORD UNIV CA DEPT OF MECHANICAL ENGINEERING</creatorcontrib><collection>DTIC Technical Reports</collection><collection>DTIC STINET</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>London, A L</au><aucorp>STANFORD UNIV CA DEPT OF MECHANICAL ENGINEERING</aucorp><format>book</format><genre>unknown</genre><ristype>RPRT</ristype><btitle>Laminar Flow Gas Turbine Regenerators--The Influence of Manufacturing Tolerances</btitle><date>1968-08</date><risdate>1968</risdate><abstract>Several current designs for high effectiveness gas turbine regenerators involve low Reynolds No. fully-developed laminar-flow type surfaces. Such surfaces consist of cylindrical flow passages, of small hydraulic radius, in parallel and the cylinder geometry may, as examples, be triangular, as in some glass-ceramic surfaces, or rectangular, as in deep-fold metal foil surfaces. This presentation demonstrates that manufacturing tolerances of several thousandths of an inch in passage dimension have a significant influence on the overall heat transfer and flow friction behavior. The analysis is also useful in rationalizing the difference between theory and test results for the basic heat transfer (j factor) characteristics as a function of Reynolds No. for various surfaces of the laminar-flow type. (Author)</abstract><oa>free_for_read</oa></addata></record> |
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| source | DTIC Technical Reports |
| subjects | GAS TURBINE REGENERATORS GEOMETRIC FORMS HEAT EXCHANGERS HEAT TRANSFER Jet and Gas Turbine Engines LAMINAR FLOW MANUFACTURING Mfg & Industrial Eng & Control of Product Sys REYNOLDS NUMBER SKIN FRICTION SURFACE PROPERTIES TEST METHODS TOLERANCES(MECHANICS) |
| title | Laminar Flow Gas Turbine Regenerators--The Influence of Manufacturing Tolerances |
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