DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Mingeon | ko |
dc.contributor.author | Shin, Dong Hwan | ko |
dc.contributor.author | Kim, Jin Sub | ko |
dc.contributor.author | Lee, Bong Jae | ko |
dc.contributor.author | Lee, Jungho | ko |
dc.date.accessioned | 2020-12-30T02:10:04Z | - |
dc.date.available | 2020-12-30T02:10:04Z | - |
dc.date.created | 2020-12-28 | - |
dc.date.issued | 2021-01 | - |
dc.identifier.citation | APPLIED THERMAL ENGINEERING, v.182 | - |
dc.identifier.issn | 1359-4311 | - |
dc.identifier.uri | http://hdl.handle.net/10203/279310 | - |
dc.description.abstract | A great number of studies have been conducted on a film cooling for turbine blades, which is to prevent thermal damage on blades originated from high turbine inlet temperature. However, film cooling with several rows of cooling-holes results in lifting-off of coolant film and limited cooling on a restricted area due to flow reattachment. In this study, effusion and transpiration cooling were applied to the single C3X blade. A multiple hole-array with a diameter of 0.5 mm was fabricated by the electric discharging machining, and a porous structure with an equivalent pore diameter of 40 mu m was manufactured by the 3-D metal additive manufacturing. Experiments were performed in the high-temperature subsonic wind tunnel, which has a free-stream temperature of 100 degrees C and a velocity of 20 m/s. The surface temperature of blades was measured using infrared thermometry with a specially designed protocol to eliminate background radiation errors from the surroundings. Also, the outflow of coolant from blades was investigated with smoke-laser sheet visualization. The overall cooling effectiveness was quantitatively analyzed on the pressure-side, suction-side, and leading-edge of blades. Due to the enhancement of convective cooling through porous media, transpiration cooling achieves 34% and 25% higher cooling effectiveness than effusion and internal cooling each. | - |
dc.language | English | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Experimental investigation of effusion and transpiration air cooling for single turbine blade | - |
dc.type | Article | - |
dc.identifier.wosid | 000592641600108 | - |
dc.identifier.scopusid | 2-s2.0-85092297527 | - |
dc.type.rims | ART | - |
dc.citation.volume | 182 | - |
dc.citation.publicationname | APPLIED THERMAL ENGINEERING | - |
dc.identifier.doi | 10.1016/j.applthermaleng.2020.116156 | - |
dc.contributor.localauthor | Lee, Bong Jae | - |
dc.contributor.nonIdAuthor | Shin, Dong Hwan | - |
dc.contributor.nonIdAuthor | Kim, Jin Sub | - |
dc.contributor.nonIdAuthor | Lee, Jungho | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Effusion cooling | - |
dc.subject.keywordAuthor | Transpiration cooling | - |
dc.subject.keywordAuthor | Air Cooling | - |
dc.subject.keywordAuthor | Internal cooling | - |
dc.subject.keywordAuthor | Infrared thermometry | - |
dc.subject.keywordAuthor | Gas turbine | - |
dc.subject.keywordPlus | HEAT-TRANSFER | - |
dc.subject.keywordPlus | INJECTION | - |
dc.subject.keywordPlus | HOLES | - |
dc.subject.keywordPlus | FLOW | - |
dc.subject.keywordPlus | ROW | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.