Channel Flow

Objective

To set up and solve a channel flow problem in Converge and post-process the results in Paraview.

The length of the channel is 0.1 metres and height is 0.01 metres.

Problem is run for three base grid sizes of 2e-4,1.5e-4 and 1.0e-4 respectively in the X-axis.

Y-axis grid size is 1e-4 which is constant for all simulation runs.

Grid Scaling is enabled as well as fixed embedding at the top and bottom boundary.

The Boundary Conditions are as follows

Inlet = 100001 Pa

Outlet = 10000 Pa

Top and Bottom = 300 K

A steady-state solution is obtained for the incompressible flow using PISO solver.

The grid scaling is performed at 5000, 6000 and 7000 cycles respectively.

The coarser grid provides a lower value for Average Temperature at Outlet. The value is closer in the refined grid and stay the same for a more refined grid.

Above is the chart comparing Inlet and Outlet pressure for various grid sizes. The flow is essentially driven by this small pressure difference of 1 Pa

Results for 2e-4

Results for 1.5e-4

Results for 1e-4