Heat Exchanger with Inner Fins CFD Simulation

$120.00 Student Discount

The present problem is to simulate a heat exchanger using ANSYS Fluent software.

Special Offers For Single Product

If you need the Geometry designing and Mesh generation training video for one product, you can choose this option.
If you need expert consultation through the training video, this option gives you 1-hour technical support.
The journal file in ANSYS Fluent is used to record and automate simulations for repeatability and batch processing.
editable geometry and mesh allows users to create and modify geometry and mesh to define the computational domain for simulations.
The case and data files in ANSYS Fluent store the simulation setup and results, respectively, for analysis and post-processing.
Geometry, Mesh, and CFD Simulation methodologygy explanation, result analysis and conclusion
The MR CFD certification can be a valuable addition to a student resume, and passing the interactive test can demonstrate a strong understanding of CFD simulation principles and techniques related to this product.


Heat Exchanger with Inner Fins, ANSYS Fluent CFD Simulation Training

The present problem is to simulate a heat exchanger using ANSYS Fluent software. In this simulation, airflow enters the device at a velocity of 22 m.s-1 and a temperature of 313 K and exits the exchanger at a pressure equal to atmospheric pressure. For the operating mechanism of the device, it is assumed that the upper and lower surfaces of the device have a thermal boundary condition of the constant temperature type equivalent to a temperature of 323 K. Also, a curved central wall in this device with several rows of blades and fins is designed to help better airflow and better heat transfer.

This work aims to investigate the effect of high-temperature walls on the airflow temperature through the heat exchanger’s interior.

Heat Exchanger Geometry & Mesh

The present model is designed in three dimensions using Design Modeler software. The model includes a heat exchanger with dimensions of 0.0018 m, 0.0082 m, and 0.0162 m; So that its inlet and outlet ducts are on both sides, and a curved inner wall with several rows of fins is located inside it, and its upper and lower walls are distinguished as surfaces with temperature condition.

heat exchanger

We carry out the meshing of the model using ANSYS Meshing software, and the mesh type is unstructured. The element number is 2039783. The following figure shows the mesh.

heat exchanger

Heat Exchanger CFD Simulation

We consider several assumptions to simulate the present model:

  • We perform a pressure-based solver.
  • The simulation is steady.
  • The gravity effect on the fluid is ignored.

The following table represents a summary of the defining steps of the problem and its solution:

Models (Heat Exchanger)
Viscous k-epsilon
k-epsilon model standard
near wall treatment standard wall function
Energy On
Boundary conditions (Heat Exchanger)
Inlet Velocity Inlet
velocity magnitude 22 m.s-1
temperature 313 K
Outlet Pressure Outlet
gauge pressure 0 Pascal
Solid Wall (CFD Simulation) Wall
wall motion stationary wall
heat flux 0 W.m-2
Heat Wall Wall
wall motion stationary wall
temperature 323 K
Methods (Heat Exchanger)
Pressure-Velocity Coupling SIMPLE
Pressure second order
momentum second order upwind
turbulent kinetic energy first order upwind
turbulent dissipation rate first order upwind
energy second order upwind
Initialization (Heat Exchanger)
Initialization methods Standard
gauge pressure 0 pascal
x-velocity & y-velocity 0 m.s-1
z-velocity 22 m.s-1
temperature 313 K


At the end of the solving process, three-dimensional and two-dimensional contours related to pressure, velocity and temperature are obtained. The contours show that the incoming air flow to the heat exchanger is affected by the hot walls and its temperature increases.

You can obtain Geometry & Mesh file and a comprehensive Training Movie that presents how to solve the problem and extract all desired results.


  1. Dallas Lowe

    How does the simulation account for the effects of radiation?

    • MR CFD Support

      The current simulation primarily focuses on conduction and convection. However, we can modify the model to include radiation effects upon request.

  2. Arvel Armstrong

    What kind of meshing strategy was employed for the heat exchanger geometry?

    • MR CFD Support

      A structured meshing strategy was employed for the heat exchanger geometry. This strategy provides a high-quality mesh that is efficient for CFD simulations.

  3. Hilma Schneider

    Can the simulation handle different types of heat exchangers, like shell-and-tube or plate heat exchangers?

    • MR CFD Support

      The current model is specific to a particular type of heat exchanger, but we can modify the simulation to handle other types of heat exchangers, such as shell-and-tube or plate heat exchangers. We are open to contributions and can accommodate your specific requirements.

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