Conjugate heat transfer in a rectangular channel with protrusions
Problem Statement:
There is a conjugate heat transfer in a rectangular channel, in which there are some rectangular protrusions aligned at an angle of 45 degrees to the flow velocity. Water enter at some velocity at a constant temperature, also there is a constant heat flux from the heater wall. Find out the nusselt number and skin friction coefficient on the heater surface.
CFD:
Computational Fluid Dynamics (CFD) is the process of mathematically modelling a physical phenomenon involving fluid flow and solving it numerically using the computational process.
A CFD software analysis examines fluid flow by its physical properties such as velocity, pressure, temperature, density, and viscosity. Those properties must be considered simultaneously to generate an accurate solution for a physical phenomenon associated with fluid flow.
A mathematical model of the physical case and a numerical method are used in a CFD software tool to analyze the fluid flow. For instance, the Navier-Stokes (N-S) equations are specified as the mathematical model of the physical case. This describes changes in all those physical properties for both fluid flow and heat transfer. A mathematical model varies by the content of the problem such as heat transfer, mass transfer, phase change, chemical reaction, etc. Moreover, the reliability of a CFD analysis highly depends on the whole structure of the process.