Stagnation flow thermophoretic deposition with variable particle concentration in the mainstream

A methodology for determining deposition with thermophoretic transport is introduced. An application is made to stagnation flow. The classical similarity solution for stagnation flow requires the boundary condition of a uniform particle concentration at an infinite location away from the wall. The present methodology removes these restrictions; i.e., it is valid for a spatially variable particle concentration boundary condition at a finite distance from the wall. The deposition characteristics are presented in terms of a factor F. The dependence of F on the flow parameters is studied and discussed.