THERMALLY RADIATIVE NANO-ENCAPSULATED PHASE CHANGE MATERIALS HEAT TRANSPORT ANALYSIS INSIDE A PERMEABLE CAVITY WITH MICROORGANISMS
P. Sudarsana Reddy, P. Sreedevi
Abstract
Bioconvection of microorganisms, heat transfer, and flow features of thermally radiative nano-encapsulated phase change materials (NEPCMs) within a permeable closed chamber by taking magnetic field is numerically examined in the present analysis. The modeled transformed equations are numerically scrutinized by applying the finite element method. The contours of microorganism concentration (N), heat capacity ratio (Cr &#61; &gamma;), concentration profiles (&phi;), temperature lines (&theta;), and lines of velocity (&psi;) of NEPCMs for dissimilar values of Rayleigh number (Ra: 10<sup>2</sup>-3 10<sup>2</sup>), fusion temperature parameter (&theta;<sub>f</sub>: 0.1-0.5), porosity parameter (k1: 0.1-0.5), Stefan parameter (Ste: 0.1-0.5), bioconvection Rayleigh number (Rb: 0.1-0.5), radiation number (Rb: 0.1-0.5), magnetic parameter (M: 0.1-0.5), conduction parameter (N<sub>c</sub>: 3.0-9.0), and viscosity parameter (N<sub>v</sub>: 3.0-9.0) are plotted and discussed in detail. Average Nusselt number values at both cold and hot walls are also calculated, and outcomes are revealed through graphs. The fusion temperature parameter markedly controls the melting zone of the NEPCMs, and melting time is reduced with higher values of (&theta;<sub>f</sub>). Porosity parameter attenuates the nanoliquid velocity within the cavity region.