Three-dimensional flow over two spheres placed side by side
- 1 January 1993
- journal article
- research article
- Published by Cambridge University Press (CUP) in Journal of Fluid Mechanics
- Vol. 246, 465-488
- https://doi.org/10.1017/s0022112093000229
Abstract
Three-dimensional flow over two identical (solid or liquid) spheres which are held fixed relative to each other with the line connecting their centres normal to a uniform I stream is investigated numerically at Reynolds numbers 50, 100, and 150. We consider the lift, moment, and drag coefficients on the spheres and investigate their dependence on the distance between the two spheres. The computations show that, for a given Reynolds number, the two spheres are repelled when the spacing is of the order of the diameter but are weakly attracted at intermediate separation distances. For small spacing, the vortical structure of the near wake is significantly different from that of the axisymmetric wake that establishes at large separations. The partially confined flow passing between the two spheres entrains the flows coming around their other sides. Our results agree with available experimental and numerical data.Keywords
This publication has 11 references indexed in Scilit:
- Numerical analysis of convecting, vaporizing fuel droplet with variable propertiesInternational Journal of Heat and Mass Transfer, 1992
- Interaction between two vaporizing droplets in an intermediate Reynolds number flowPhysics of Fluids A: Fluid Dynamics, 1990
- Stability of the flow past a sphereJournal of Fluid Mechanics, 1990
- Heat and momentum transfer around a pair of spheres in viscous flowInternational Journal of Heat and Mass Transfer, 1984
- On one-dimensional stretching functions for finite-difference calculationsJournal of Computational Physics, 1983
- Fuel droplet vaporization and spray combustion theoryProgress in Energy and Combustion Science, 1983
- Flow structure in motion of a spherical drop in a fluid medium at intermediate Reynolds numbersFluid Dynamics, 1977
- Steady wake behind a spherePhysics of Fluids, 1976
- Transition and Strouhal Number for the Incompressible Wake of Various BodiesPhysics of Fluids, 1966
- Experimental Investigation of the Wake behind a Sphere at Low Reynolds NumbersJournal of the Physics Society Japan, 1956