## Overview

Solver Capabilities | : | – Steady-state – Incompressible flow – Turbulent Flow |

Analytical case | : | The flow between two flat plates.The Hagen-Poiseuille flow |

The case is described in the following figure.

The flow between two parallel plates is well-known as channel flow. The channel flow is a flow of viscous Newtonian fluid between two boundaries driven by a constant **pressure gradient**. In this documentation, we would like to verify whether the **CFDSOF** capable of correctly calculate the flow field in 2D laminar channel flow. This is the dimension of the channel

- Height, H = 0,2 \> m
- Length, L = 3 \> m

By using CFD simulation, we will calculate the development of the velocity profile that happens inside the channel.

## Mesh

We use tetrahedral mesh. The mesh is distributed towards the inlet and walls to capture the flow better.

## Fluid Properties

This simulation uses water as the fluid that have properties as follow

- Density, \rho = 997 \> kg/m^{3}
- Dynamic viscosity, \mu = 0.00089 \> Pa.s
- Pressure gradient, \nabla P / \rho = 0.000100301 \> m^{2}/s^{2}

## Results

Below is the results between computation with **CFDSOF** and analytic calculation.

From the results, CFDSOF gains a 4% error. This error arises from the number of mesh that is used. To enhance the result, we can increase the number of mesh.

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