The Design – CFD Simulation of a Shell and Tube Type Heat Exchanger | ANSYS Fluent
One of the common types of converters is a shell-tube heat exchanger. In terms of the number of shell and tube passes, these converters have different types. Typically, the pores that are installed cause turbulence and the creation of a component of the transverse velocity in the flow, therefore the displacement coefficient of the fluid in the shell side increases.
In these heat exchangers, the shell and the tube have a baffle (flow-guide plates), the flow of the shell side has an intersection with the tubes at the adjacent baffles, and while moving from the distance between the one baffles to the next, the flow moves Parallel with tubes.
In this project, an attempt has been made to simulate and analyze a shell-tube heat exchanger using Ansys Fluent software.
Geometry & Grid
The geometry required for this analysis was generated by Ansys Design Modeler software. The meshing required for this analysis was also generated by Ansys Meshing software. The mesh type used in this analysis is unstructured. The total number of volume properties for shell & tube geometry is 2.9752e+008 mm³.
In this analysis, the k-epsilon RNG turbulence viscosity model has been used to check the fluid flow, and also the Standard Wall Function near the walls has been used.
For flow cold inlet, the velocity-inlet boundary condition is considered at 0.1 m/s. For flow hot inlet, the velocity-inlet boundary condition is considered at 0.02 m/s. The outlet is considered a pressure-outlet condition. The inlet temperature is 300 Kelvin.
Discretization of Equations
Due to the type of heat transfer in this analysis, a Pressure-Based solver has been used to solve the equations and the SIMPLE Algorithm for the discretization of velocity and pressure has been used. The energy and momentum equations have been discretized in the second-order upwind.
The results are presented as temperature and velocity contours.
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