Research on Compressible Flow around Cylinder and Truncated Cone with LES Method

Abstract:

Numerical simulation with the large eddy simulation, filter function, and Smagorinsky sub-grid scale model is adopted to simulate the compressible flow around a bluff body finite length circular cylinder and truncated cone in high Reynolds number. The law of the drag coefficient, lift coefficient and pressure coefficient obtained from models with various cross-wind speeds was discussed. Process of the vortex generated, shed and dissipated was analyzed and the relationship between the press filed, velocity filed and vortex filed was also analyzed. Average value of the drag coefficient, lift coefficient and pressure coefficient of the circle cylinder in subcritical region are greater than truncated cone. Values of pressure coefficient on the windward side of all the models are consistent. However, it various widely on the leeward side, even on the end face of the cone and cylinder.

• Periodical: Advanced Materials Research (Volumes 919-921)
• Pages: 210-215
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.919-921.210
• Online since: April 2014
• Authors: Meng Zhao*, Jun Mao, Guo Wei Yang
• Keywords: Flow around Circular Cylinder, Flow Filed, LES, Vortex Street

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