Kinetic Theory of Drag on Objects in Nearly Free Molecular Flow
arXiv:1404.7826 · doi:10.1016/j.physa.2014.06.026
Abstract
Using an analogy between the density expansion of the transport coefficients of moderately dense gases and the inverse-Knudsen-number expansion of the drag on objects in nearly free molecular flows, we formulate the collision integrals that determine the first correction term to the free-molecular drag limit. We then show how the procedure can be applied to calculate the drag coefficients of an oriented disc and a sphere as a function of the speed ratio.
10 figures, 6 tables; Typographical errors corrected