# Spiral Heat Exchanger CFD Simulation, ANSYS Fluent

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The present problem is concerned with the simulation of a spiral heat exchanger.

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## Spiral Heat Exchanger CFD Simulation, ANSYS Fluent CFD Simulation Training

The present problem concerns the simulation of a spiral heat exchanger by ANSYS Fluent software. In this spiral path, two paths for cold water and hot water are used so that the temperature difference between the two water flows causes heat transfer. The hot flow enters the central part of the heat exchanger and exits the heat exchanger environment (laterally) in a perpendicular direction to the inlet area, while the cold current has the opposite direction of the hot stream and enters the heat exchanger environment (laterally) and exits from the central part of the heat exchanger in a direction perpendicular to the input path. The coil plates are embedded between two hot and cold flow paths made of steel with a thickness of 0.01 m. The exterior wall of the model is also made of steel.

## Assumption

There are several assumptions used for the present simulation:

The simulation is Steady-State, and the solver is Pressure-Based. Also, the Earth’s gravity effect on the model is considered equal to 9.81 kg.s-1.

## Geometry & Mesh (Spiral Heat Exchanger)

The 3-D geometry of the present model (spiral heat exchanger) is designed by the Design Modeler software. The geometry of the present model consists of a cylinder with a separating plate inside the cylinder, which creates two separate spaces for hot and cold fluid flow. Similarly, for each of the two spaces created, an inlet and an outlet cross-section determine the route of the inlet and outlet flow, and their structure is such that the inlet and outlet flow paths are perpendicular to each other. The meshing of the present model is done by ICEM software. The mesh was unstructured and the element number was 450631.

## Spiral Heat Exchanger CFD Simulation

Summaries of the problem definition and problem-solving steps are presented in the table:

 Models k-epsilon Viscous model RNG k-epsilon model standard wall functions near-wall treatment on Energy Boundary conditions (Spiral Heat Exchanger) Mass flow inlet Inlet type 2 kg.s-1 mass flow rate cold water 289 K temperature 3 kg.s-1 mass flow rate hot water 313 K temperature Pressure outlet Outlet type (Spiral Heat Exchanger) 0 Pa gauge pressure cold water 0 Pa gauge pressure hot water wall Walls type insulated outer walls coupled middle wall Solution Methods (Spiral Heat Exchanger) Coupled Â Pressure-velocity coupling second-order upwind pressure Spatial discretization (Spiral Heat Exchanger) first-order upwind momentum first-order upwind energy first-order upwind turbulent kinetic energy first-order upwind turbulent dissipation energy Initialization (Spiral Heat Exchanger) Standard Initialization method 313 K temperature

## Reviews

1. Misty Schinner

How do you ensure the accuracy of the mesh in the Spiral Heat Exchanger CFD Simulation?

• MR CFD Support

We use ANSYS Meshing software to generate a high-quality mesh. The software allows us to refine the mesh in areas of interest, ensuring that we accurately capture the heat transfer phenomena.

2. Annabelle Mayert

What boundary conditions are used in the Spiral Heat Exchanger CFD Simulation?

• MR CFD Support

We use appropriate boundary conditions based on the specifics of the heat exchanger design and operation. These typically include temperature and flow rate conditions at the inlets and outlets.

3. Mr. Brody Hammes

I’m impressed with the level of detail in your product descriptions. It really helps me understand what I’m purchasing.

• MR CFD Support

Thank you! We believe in providing detailed descriptions so our customers can make informed decisions. If you have any more questions, feel free to ask.

4. Miss Danielle Renner II

The quality of your simulations is exceptional. The Spiral Heat Exchanger CFD Simulation is particularly impressive!

• MR CFD Support

Thank you very much! We aim to provide high-quality, detailed simulations. Your feedback is appreciated

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