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Simulation of plate heat exchanger in Ansys Fluent

The process of heat exchanging between two fluids with different temperatures separated by solid frontiers is a device called heat exchanger.

The heat exchangers are divided into three types of non-uniform flow heat exchangers (counter flow), parallel heat exchanger (parallel flow), and cross flow heat exchanger (cross flow).

In this type of counter-flow heat exchanger, two fluids flow in the opposite direction exchange heat with each other.

The use of these devices are in the building heating system, air conditioning, power generation, waste heat recovery, and so on.

In this project, it has been tried to simulate and analyze a plate heat exchanger with Ansys Fluent software.

Geometry and mesh

The geometry is generated in the Design modeler software. Meshing also generated in Ansys meshing software and the number of cells is 1196800.


The k-epsilon standard model is used to simulate the turbulent flow.

Also, due to the heat transfer, the energy model should be activated.

Boundary conditions

For the inlet, the mass flow inlet is used.

For outlet flow, the pressure outlet has been used.

For walls, the boundary condition of Wall has been defined while the walls are thermal insulation and their thermal flux is zero, as well as the internal walls of the Coupled are used.

Discretization of equation

To solve the equations, SIMPLE algorithm is used in Second order upwind mode.

Finally, results are presented as temperature and velocity contours.

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  1. shaufiq

    hello sir
    I am Shaufiq. BAchelor student. right now i doing simulation on plate heat exchanger by using nanofluid. i want ask, are you just testing it on one plate or two plate. i am doing it with corrugated plate. and i can only define one inlet and one outlet. how can we know the heat transfer if there is one inlet and one outlet. i hope u can give me the answer, tq

    1. Reza Amini

      Hi Shaufiq
      Due to the nature of the plate heat exchangers and the geometric structure of such exchanges, it is imperative that two panel compartments be used side by side in parallel. In this case, the heat transfer between the two compartments will be possible through the plate between the two compartments. In this case, you can specify an input and an output for each container. Each of these compartments is used for a fluid. A chamber for a warm fluid and a chamber for cool fluid. In this case, you can specify two inputs for the entire geometry and two outputs.
      This project is also done using two rectangular enclosures, which have two inputs and two outputs for hot and cold fluid.
      best regards

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