Gyrotactic mixed bioconvection flow of a nanofluid past a circular cylinder with convective boundary condition
作者： A.M. Rashad , Hossam A. Nabwey
DOI: 10.1016/J.JTICE.2019.02.035
关键词:
摘要: Abstract In recent years, Bioconvection phenomenon plays a fundamental role in several applications like biological systems, modern engineering, biotechnology and environmental systems. The term bioconvection indicates to macroscopic convection movement of fluid produced due the density gradient generated by collective swimming microorganisms bacteria algae. These self-propelled motile enhance base particular direction, thus causing bioconvection. This research describes nanofluid containing gyrotactic micro-organisms past horizontal circular cylinder subject convective boundary condition. Buongiorno's two-component model is deployed with Oberbeck–Boussinesq approximation. Modeling based on Brownian thermophoresis aspects. Boundary-layer idea employed for simplification governing expressions. Finite-difference algorithm implemented computations nonlinear problems. Besides, velocity, temperature, micro-organism function, local skin friction coefficient, Nusselt number, wall function are analyzed variation physically pertinent values selected control parameters. Comparison amid previously published results current numerical made limiting cases, which found be an virtuous agreement.
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