Abstract
Numerical simulations of flow around a rigid sphere, subjected to a sudden acceleration (or deceleration) in relative velocity, are considered. Particular attention is paid to the interaction between the imposed sudden acceleration and a preexisting finite Re wake. The results clearly establish the independence of added mass coefficient to the acceleration number and to the state of flow prior to acceleration. A simple reasoning based on the different time scales of the flow is given.
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Communicated by M.Y. Hussaini
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Wakaba, L., Balachandar, S. On the added mass force at finite Reynolds and acceleration numbers. Theor. Comput. Fluid Dyn. 21, 147–153 (2007). https://doi.org/10.1007/s00162-007-0042-5
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DOI: https://doi.org/10.1007/s00162-007-0042-5