Theoretical and Computational Fluid Dynamics

, Volume 21, Issue 2, pp 147–153

On the added mass force at finite Reynolds and acceleration numbers

Original Article

DOI: 10.1007/s00162-007-0042-5

Cite this article as:
Wakaba, L. & Balachandar, S. Theor. Comput. Fluid Dyn. (2007) 21: 147. doi:10.1007/s00162-007-0042-5

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.

PACS

47.55.Kf

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  1. 1.Department of Theoretical and Applied MechanicsUniversity of IllinoisUrbana-ChampaignUSA