Numerical Study of Flow over Sphere at Supercritical Reynolds Numbers

Abstract:

Numerical study of flow over sphere at supercritical Reynolds numbers by SST equations model and DES method based on SST model has been done. The simulation on Re = 9.4×10⁵,1.88×10⁶,2.82×10⁶ were given. Compared with the Results of experiments, the calculations of drag coefficients at Re=1.88×10⁶、2.82×10⁶ agreed well with Achenbach’s results. The trailing vortex structure was shown through the identification method of three dimensional flow field. It had a good agreement with Taneda’s results. The time histories and spectrum characteristics of the drag and the lateral force were investigated by the transient mothod.

• Periodical: Advanced Materials Research (Volume 1077)
• Pages: 207-214
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1077.207
• Online since: December 2014
• Authors: Yu Fu Wang*, Guo Quan Tao, Dong Xu Liu, Jin Zhao Hu, Zhe Wu
• Keywords: Drag Coefficient, Flow over Sphere, Frequency Spectrum, Supercritical Reynolds Numbers, Vortical Structure

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