# Simulation of the heat transfer flow inside a parallel plate heat exchanger with blade

The plate heat exchanger is a type of heat exchanger, which is generally composed of a large number of corrugated stainless steel plates. These plates are separated by polymeric gaskets and are inside a steel frame. The main components of the plate heat exchanger are frames, plates and gaskets. The plates that form the heat exchange surface are tightened by bolts and nuts between two steel plates. In plate heat exchangers, the hot and cold fluid inter the duct network in the opposite directions. The cold and hot fluid plates are placed side by side in order to exchange heat between two fluids. On the two adjacent sides, the cold and hot stream flows in opposite directions along each other. The ducts are narrow in a plate heat exchanger, therefore a large volume of fluid can be contacted by the surfaces. Corrugated plate heat exchangers increase the turbulence of the flow and thereby increase the heat transfer between the plates. Creating a blade inside the plates is one of the ways to increase heat transfer.

In this analysis, it has been tried to simulate and analyze the heat transfer flow of a parallel plate heat exchanger with blade using Ansys Fluent software.

### Geometry and Mesh

The geometry required for this analysis has been generated by Ansys Design Modeler software. The meshing is also generated by Ansys Meshing software. The mesh type used in this analysis is unstructured. The total number of cells produced for this geometry is 3999056.

### Model

In this analysis, K-epsilon Standard Turbulence viscosity model was used to check the flow of fluid. The Standard Wall function condition is also applied near the wall.

### Boundary Condition

The flow inlet for the cold fluid is defined as Mass Flow Inlet, and its value is 0.00361 kg/s at 276.5 k. Similarly, the flow inlet for the hot fluid is defined as the Mass Flow Inlet, and its value is 450.00 kg/s at 286.5 k. The flow outlet is also considered as Pressure-Outlet. The external wall of the converter is also defined as Wall condition.

### Discretization of equations

According to the type of flow in this analysis (rotational), the SIMPLE algorithm is used to discretize the coupled equation of velocity and pressure. The momentum and energy equations are discretized as Second Order Upwind.

The results are presented as velocity contours as well as streamlines.

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