The onset of thermo-bioconvection in a shallow fluid saturated porous layer heated from below in a suspension of oxytactic microorganisms

摘要: Abstract The aim of this paper is to present a continuum model for thermo-bioconvection oxytactic bacteria in porous medium and investigate the combined effects microorganisms' upswimming heating from below on stability bioconvection horizontal layer filled with fluid saturated medium. Different traditional bioconvection, has two destabilizing mechanisms that contribute creating unstable density stratification. This problem may be relevant number geophysical applications, such as investigation dynamics species thermophiles (heat loving microorganisms) living hot springs, microbial-enhanced oil recovery, modeling oil- gas-bearing sedimentary basins. utilization Galerkin method solve linear leads correlation between critical value Rayleigh “thermal” number.