LES of Flow past Circular Cylinder at Re = ۳۹۰۰

سال انتشار: 1395
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 105

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شناسه ملی سند علمی:

JR_JAFM-9-3_039

تاریخ نمایه سازی: 3 بهمن 1400

چکیده مقاله:

Transitional flow past a circular cylinder in the lower subcritical regime (Re = ۳۹۰۰) has been analysed using Large Eddy Simulation (LES) coupled to Smagorinsky and dynamic sub grid scale models. These simulations have been carried out using a parallel multiblock structured finite volume code which is based on SIMPLE algorithm. The predictions are validated against detailed measurement data for mean as well as turbulence quantities. The present LES prediction in general agree reasonably well with the measurement data in the near wake region but deviates from the measurement data in the far wake region which may be due to the coarse resolution of the grid in this region. The influence of the SGS model on mean flow quantities as well as on the flow structures are also discussed.

کلیدواژه ها:

Implicit finite volume solver ، LES ، Smagorinsky and dynamic SGS model

نویسندگان

B. N. Rajani

CTFD Division, National Aerospace Laboratories(CSIR), Bangalore, ۵۶۰ ۰۱۷ India

A. Kandasamy

DMACS, National Institute of Technology Karnataka, Surathkal ۵۷۵ ۰۲۵, India

Sekhar Majumdar

Dept. of Mech. Engg., NITTE Meenakshi Institute of Technology, Bangalore ۵۶۰ ۶۴۰, India