Double Pipe Heat Exchanger with Dish-Shaped Strip Inserts, ANSYS Fluent

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The heat transfer inside a double pipe heat exchanger with dish-shaped strip inserts is investigated in this project.

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A heat exchanger is a system used to transfer heat between two or more fluids. Heat exchangers are used in both cooling and heating processes. A solid wall may separate the fluids to prevent mixing, or they may be in direct contact. They are widely used in space heating, refrigeration, air conditioning, power stations, chemical plants, petrochemical plants, petroleum refineries, natural-gas processing, and sewage treatment. The classic example of a heat exchanger is found in an internal combustion engine. (Double Pipe Heat Exchanger with Dish-Shaped Strip Inserts)

A circulating fluid known as engine coolant flows through radiator coils and air flows past the coils, which cools the coolant and heats the incoming air. Another example is the heat sink, a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium, often air or a liquid coolant.

Double Pipe Heat Exchanger with Dish-Shaped Strip Inserts Project Description

The heat transfer inside a double pipe heat exchanger with dish-shaped strip inserts is investigated in this project by ANSYS Fluent software. The double heat exchanger consists of several baffles (dish-shaped strip) with a heated wall. The water flow enters the pipe with an initial temperature of 293K and a velocity equal to 1.537972m/s. Also, the heated wall is exposed to a heat flux of 200000W/m2. The energy equation is activated to obtain temperature distribution inside the computational domain, and the RNG k-epsilon model is exploited to solve turbulent flow equations.

Double Pipe Heat Exchanger Geometry & Mesh

This project’s geometry is designed in ANSYS Design Modeler and consists of dish-shaped strips and a heating wall. The geometry has then meshed in ANSYS Meshing software, and the mesh type used for this geometry is unstructured, and the element number is 649800.

Double Pipe Heat Exchanger Double Pipe Heat Exchanger

CFD Simulation Settings

The critical assumptions considered in this project are:

  • Simulation is done using a pressure-based solver.
  • The present simulation and its results are considered steady and do not change as a function of time.
  • The effect of gravity has not been taken into account.

The applied settings are summarized in the following table.

Viscous model k-epsilon
k-epsilon model RNG
near wall treatment standard wall function
Energy on
Boundary conditions
Inlet Velocity inlet
Inlet 1.537972 m/s
Temperature 293 K
Outlet Pressure outlet
Gauge pressure 0 Pa
Walls Stationary wall
exchanger Heat flux 0 W/m2
Heat wall Heat flux 200000 W/m2
wall Heat flux 0 W/m2
Solution Methods
Pressure-velocity coupling   SIMPLE
Spatial discretization Pressure Second order
Momentum second order upwind
Energy second order upwind
turbulent kinetic energy second order upwind
turbulent dissipation rate second order upwind
Initialization method   Standard
gauge pressure 0 Pa
Velocity (x,y,z) (1.537972,0,0) m/s
temperature 293 K
Turbulent kinetic energy 0. 0003548039 m2/s2
Turbulent dissipation rate 0.0007634331 m2/s3


After the CFD simulation process, contours of pressure, velocity, temperature, etc., are obtained and presented.


  1. Avatar Of Mr. Delmer Senger

    Mr. Delmer Senger

    What a thorough simulation! The detailed design of the heat exchanger with dish-shaped strip inserts seems to be precisely modeled for optimum heat transfer analysis. Impressive use of the RNG k-epsilon model for turbulence and excellent choice in managing the boundary conditions to obtain accurate temperature distributions within the system. It’s fascinating how computational tools like ANSYS Fluent can be utilized to enhance the performance of classic engineering systems. Kudos on a well-executed project!

    • Avatar Of Mr Cfd Support

      MR CFD Support

      Thank you for your positive feedback! We are thrilled to know that our Double Pipe Heat Exchanger project with dish-shaped strip inserts met your expectations. It’s great to hear that the precision of the modeling and the thoughtful application of turbulence models in ANSYS Fluent contributed to your compelling analysis. We appreciate the time you took to recognize our efforts, and your satisfaction is our biggest reward.

  2. Avatar Of Ms. Rosella Gerhold

    Ms. Rosella Gerhold

    I’m truly fascinated with the level of detail in this double pipe heat exchanger simulation! The inclusion of dish-shaped strip inserts for studying heat transfer demonstrates an advanced application of CFD. I’m impressed by the marriage of sophisticated geometry and meshing with complex physical models to achieve meaningful results.

    • Avatar Of Mr Cfd Support

      MR CFD Support

      Thank you for your kind words! We are pleased to hear that you appreciate the complexity and the detail in our double pipe heat exchanger simulation. Delivering accurate and comprehensive simulations is what we constantly strive for. If you have any further questions about this product or any other, please don’t hesitate to ask.

  3. Avatar Of Skyla Koch

    Skyla Koch

    I’m floored by the fantastic results garnered from the Double Pipe Heat Exchanger CFD project! It is exceptional to see how effectively the dish-shaped strip inserts improve heat transfer. Outstanding work!

    • Avatar Of Mr Cfd Support

      MR CFD Support

      Thank you so much for your kind review! We’re thrilled to hear that the project’s results impressed you. Enhancing heat transfer efficiently within such systems is at the core of our CFD simulations, and your acknowledgement really validates our efforts in this area.

  4. Avatar Of Mr. Devonte Eichmann

    Mr. Devonte Eichmann

    The project description mentions dish-shaped strip inserts. Can you explain how these impact the heat transfer process in the double pipe heat exchanger?

    • Avatar Of Mr Cfd Support

      MR CFD Support

      The dish-shaped strip inserts are placed within the inner tube of the double pipe heat exchanger to enhance the heat transfer process. These inserts act as turbulence promoters, disturbing the laminar boundary layer and increasing the fluid’s mixing level, which improves heat conduction from the heated wall to the flow. The increased turbulence also reduces the thermal resistance and thus, significantly enhances the heat transfer coefficient, leading to a more efficient heat exchange process.

  5. Avatar Of Urban Ullrich

    Urban Ullrich

    I just completed studying the project about the Double Pipe Heat Exchanger with Dish-Shaped Strip Inserts using ANSYS Fluent that you guys provided. Impressed by the level of detail in the simulation process and results. The heat transfer insights with the dish-shaped strip inserts give a great understanding of the efficiency improvements that can be applied in actual heat exchanger design. Kudos to the team for such an intricate and well-explained simulation project!

    • Avatar Of Mr Cfd Support

      MR CFD Support

      Thank you for your kind words! We are thrilled to hear that you found the project detailed and helpful. It’s great to know that the simulation provided you with a clear understanding of the heat transfer processes in the heat exchanger, and how such inserts can improve design efficiency. Should you have any further questions about heat exchanger design or other projects, feel free to reach out. Your feedback is highly appreciated, and we are here to support your learning journey!

  6. Avatar Of Denis Berge

    Denis Berge

    I found the information about dish-shaped stirp inserts fascinating. Have these inserts proven to be more efficient in heat transfer compared to other types of inserts?

    • Avatar Of Mr Cfd Support

      MR CFD Support

      Yes, dish-shaped strip inserts have been shown to improve the turbulence of the flow and therefore can enhance heat transfer. The increased turbulence helps disrupt laminar flow behavior and promotes better mixing of the fluid, which aids in the heat exchange process.

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