Numerical investigation of the aerodynamics of the near-slot film cooling

Kassimatis, PG; Bergeles, GC; Jones, TV; Chew, JW

dc.contributor.author	Kassimatis, PG	en
dc.contributor.author	Bergeles, GC	en
dc.contributor.author	Jones, TV	en
dc.contributor.author	Chew, JW	en
dc.date.accessioned	2014-03-01T01:15:44Z
dc.date.available	2014-03-01T01:15:44Z
dc.date.issued	2000	en
dc.identifier.issn	0271-2091	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13702
dc.subject	Navier-Stokes equations	en
dc.subject	two-dimensional slot cooling	en
dc.subject	film cooling	en
dc.subject	numerical methods	en
dc.subject.classification	Computer Science, Interdisciplinary Applications	en
dc.subject.classification	Mathematics, Interdisciplinary Applications	en
dc.subject.classification	Mechanics	en
dc.subject.classification	Physics, Fluids & Plasmas	en
dc.title	Numerical investigation of the aerodynamics of the near-slot film cooling	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/(SICI)1097-0363(20000115)32:1<85::AID-FLD930>3.0.CO;2-H	en
heal.identifier.secondary	http://dx.doi.org/10.1002/(SICI)1097-0363(20000115)32:1<85::AID-FLD930>3.0.CO;2-H	en
heal.language	English	en
heal.publicationDate	2000	en
heal.abstract	Fluid injection from slot or holes into cross-flow produces highly complicated flow fields. Physical situations encountering the above problem range from turbine blade cooling to waste discharge into rivers. In this paper, the flow field created by a two-dimensional slot cooling geometry is examined using the finite volume approach with a second-order upwind differencing scheme. The time-averaged Navier-Stokes equations were solved on a collocated Cartesian grid with a two-equation model of turbulence. Attempting to solve the flow field by assuming a uniform velocity profile at the slot exit leads to inaccurate results, while extending the solution domain improves significantly the results, but proves to be costly, both in memory and in computing time (particularly in the case of multiple holes). A pressure-type boundary condition, based on uniform total pressure, is developed for the slot exit (easily applied to a three-dimensional geometry), which yields more accurate results than the widely used uniform velocity assumption. It is also found that the implementation of low Reynolds number turbulence models on this geometry provides no significant differences from the standard k-epsilon model. Copyright (C) 2000 John Wiley & Sons, Ltd.	en
heal.publisher	JOHN WILEY & SONS LTD	en
heal.journalName	INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS	en
dc.identifier.doi	10.1002/(SICI)1097-0363(20000115)32:1<85::AID-FLD930>3.0.CO;2-H	en
dc.identifier.isi	ISI:000084653900005	en
dc.identifier.volume	32	en
dc.identifier.issue	1	en
dc.identifier.spage	97	en
dc.identifier.epage	117	en