Unsteady simulations for an advanced-louver cooling scheme

Chad X.Z. Zhang, Sung In Kim, Ibrahim G. Hassan

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The performance of a louver cooling scheme on a flat plate was analyzed using Detached Eddy Simulation. It was assumed that the louver cooling scheme was tested in a wind tunnel with the mainstream flow velocity of 20 mIs, equivalent to a Reynolds number of 16200 based on the jet diameter. Turbulence closure was achieved by a Realizable k- based DES turbulence model. Solutions of two blowing ratios of 0.5 and 1 were successfully obtained by running parallel on 16 nodes on a computer cluster. The instantaneous flow fields were found to be highly unsteady and oscillatory in nature. It is shown that the fluctuations in the adiabatic effectiveness are mainly caused by the spanwise fluctuation of the coolant jet and the unsteady vortical structures created by the interaction of the jet and the mainstream.

Original languageEnglish
Title of host publication2008 Proceedings of the ASME Turbo Expo
Subtitle of host publicationPower for Land, Sea, and Air
Number of pages10
EditionPART C
Publication statusPublished - 1 Dec 2008
Event2008 ASME Turbo Expo - Berlin, Germany
Duration: 9 Jun 200813 Jun 2008

Publication series

NameProceedings of the ASME Turbo Expo
NumberPART C


Other2008 ASME Turbo Expo


ASJC Scopus subject areas

  • Engineering(all)

Cite this

Zhang, C. X. Z., Kim, S. I., & Hassan, I. G. (2008). Unsteady simulations for an advanced-louver cooling scheme. In 2008 Proceedings of the ASME Turbo Expo: Power for Land, Sea, and Air (PART C ed., pp. 2057-2066). (Proceedings of the ASME Turbo Expo; Vol. 6, No. PART C). https://doi.org/10.1115/GT2008-51477