|Title||Deformation of ambient chemical gradients by sinking spheres|
|Publication Type||Journal Article|
|Year of Publication||2020|
|Authors||Inman B.G, Davies CJ, Torres C.R, Franks PJS|
|Type of Article||Article|
|Keywords||boundary layer structure; brunt-vaisala frequency; core; diffusion; flow; fluid flows; fluxes; heat-transfer; mechanics; particle; particles; physics; rossby radii; single spheres; stratified fluid|
A sphere sinking through a chemical gradient drags fluid with it, deforming the gradient. The sphere leaves a trail of gradient enhancement that persists longer than the velocity disturbance in the Reynolds , Froude and Peclet regime considered here. We quantify the enhancement of the gradient and the diffusive flux in the trail of disturbed chemical left by the passing sphere using a combination of numerical simulations and scaling analyses.