NDLI: Development and Validation of a Compressible Large-Eddy Simulation Code With Overset Mesh Method

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Tateishi, Atsushi Watanabe, Toshinori Himeno, Takehiro
Copyright Year	2017
Abstract	This paper describes basic ideas for the design of a new computational fluid dynamics (CFD) code for large-eddy simulation (LES), as well as presenting fundamental validation and demonstration cases. The developed code combines highorder structured solver with overset mesh technique, which enables to control mesh density easily with keeping high mesh quality. The validations were conducted over two different flow regimes. The mesh size criteria for the present code were identified from the systematic mesh study of wall-bounded channel flow. In addition, the wake profile after the circular cylinder as a validation of free shear flow showed good agreement with the reference data. Then the validated code was applied to the flow field of highly loaded stator vane. The developed solver reproduced the position of separation bubble accurately however, the velocity profiles on the vane needed improvement by introducing free stream turbulence. From the sequence of validation and application studies, it was concluded that the present code can be used for the researches of fundamental turbulent flow field in turbomachinery.
Sponsorship	International Gas Turbine Institute
File Format	PDF
ISBN	9780791850794
DOI	10.1115/GT2017-64195
Volume Number	Volume 2B: Turbomachinery
Conference Proceedings	ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition
Language	English
Publisher Date	2017-06-26
Publisher Place	Charlotte, North Carolina, USA
Access Restriction	Subscribed
Subject Keyword	Turbulence Computational fluid dynamics Shear flow Turbomachinery Separation (technology) Flow (dynamics) Density Circular cylinders Design Bubbles Large eddy simulation Stators Wakes Channel flow
Content Type	Text
Resource Type	Article

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