Linear instability of a two‐layer flow with differential particle loading

摘要: The linear instability of an unbounded, two‐layer particle‐laden flow subjected to infinitesimal perturbations was investigated. two‐phase model employed in this study is dissipative because a viscous mechanism through which momentum transferred between the perturbed interstitial fluid and suspended particles. interchange found depend critically on ratio particle response time scales perturbation. dispersion equation for system large scale solved analytically. Two unstable modes were coexist. effects three nondimensional parameters, mean loading parameter, differential relative offset shear two layer interface, examined. In particular, if velocity boundary shifted toward low parameter increases, most mode ‘‘switches’’ from lon...