Phototactic bioconvection under oblique collimated irradiation in a forward scattering suspension

Abstract

Phototaxis, the process by which living organisms navigate toward optimal light conditions, is essential for motile photosynthetic microorganisms. Positive(negative) phototaxis denotes the motion directed towards(away from) the source of illumination. The main objective of this study is the numerical investigation of onset of bioconvection in a suspension of phototactic microorganisms illuminated by oblique collimated irradiation at the top. In this suspension, the algal cells absorb and anisotropically scatter incident light which influences the flow dynamics of the cells.