In this research, experimental studies conducted by Casarsa [1] were used as test case to validate flow simulation methods. In the numerical simulations, four RANS turbulence models (k-ε, k-ω, V2-f and Reynolds Stress Model) and a URANS model which are widely used in industrial applications were employed for preliminary analyses. In addition, Scale-Adaptive Simulation (SAS), Detached Eddy Simulation (DES) and Large Eddy Simulation (LES) models are conducted to examine the capabilities of Scale Resolving Simulation (SRS) models. All numerical simulations were performed on two different grid resolutions. Relevance of the grid resolutions to the applied SRS methodologies have been assessed both with crude estimations obtained from the RANS simulations and examination of LES solutions. Findings were presented at various parallel and perpendicular planes with respect to the side walls and different over and inter-rib space locations in the form of mean and root mean square (rms) velocity profiles. In all comparisons, SRS results revealed an inarguable superiority over RANS models as expected. Among the SRS models, SAS model has been considered as the most promising industrial purpose model because of providing similar quality results by allowing higher time steps and coarser grid resolutions.
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ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition
June 26–30, 2017
Charlotte, North Carolina, USA
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-5087-9
PROCEEDINGS PAPER
Flow Computations of Rib-Roughened Cooling Channels With RANS and Scale Resolving Simulation Models
İlhan Görgülü,
İlhan Görgülü
TUSAS Engine Industries, Inc., Eskisehir, Turkey
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Ender Hepkaya
Ender Hepkaya
TUSAS Engine Industries, Inc., Eskisehir, Turkey
Search for other works by this author on:
İlhan Görgülü
TUSAS Engine Industries, Inc., Eskisehir, Turkey
Ender Hepkaya
TUSAS Engine Industries, Inc., Eskisehir, Turkey
Paper No:
GT2017-63646, V05AT11A004; 13 pages
Published Online:
August 17, 2017
Citation
Görgülü, İ, & Hepkaya, E. "Flow Computations of Rib-Roughened Cooling Channels With RANS and Scale Resolving Simulation Models." Proceedings of the ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. Volume 5A: Heat Transfer. Charlotte, North Carolina, USA. June 26–30, 2017. V05AT11A004. ASME. https://doi.org/10.1115/GT2017-63646
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