Heat transfer in a triangular cavity filled with nanofluid using nonhomogeneous dynamic model

Abstract

In this paper, the problem of natural convective heat transfer in a right triangular cavity filled with nanofluids using nonhomogeneous dynamic model is investigated numerically. The inclined wall of the cavity is maintained at constant cold temperature, left vertical wall is adiabatic whereas the bottom wall is considered as uniformly heated. The cavity is permeated by an inclined uniform magnetic field and the effects of gravity, Brownian motion and thermophoresis are incorporated into the nanofluid model. Governing partial differential equations are developed and solved them using the finite element simulation with Galerkin’s weighted residual technique. Comparison with previously published works is performed and very good agreement is obtained. The computations are carried out for different values of the model parameters and the results are displayed graphically in the form of isotherms. Moreover, the average Nusselt number from the bottom heated wall is presented in a tabular form for 10 types of nanofluids. The result shows that the rate of heat transfer of Fe3O4-H2O nanofluid is much higher than that of other 9 types of nanofluids which are studied in the present analysis.