Summary of "[CFD] Inflation Layers / Prism Layers in CFD"

The video delves into the utilization of Inflation layers or Prism layers in Computational Fluid Dynamics (CFD) to enhance the resolution of velocity and Temperature profiles near the wall, thereby improving the accuracy of predicting Heat transfer coefficient and Wall shear stress. Inflation layers, thin cells perpendicular to the wall, play a crucial role in achieving this resolution. Parameters like the number of layers, growth ratio (typically between 1.05 to 1.3), and boundary layer thickness are key considerations in setting up Inflation layers, with the number of layers typically ranging from 10 to 30.

Key Considerations for Inflation layers

Number of layers
Growth ratio (typically between 1.05 to 1.3)
Boundary layer thickness

To ensure accurate solutions, it is essential to calculate the total height of Inflation layers, align it with the boundary layer thickness, and verify the mesh for volume transitions. Volume transitions hold significance in both Large Eddy Simulation (LES) and Reynolds-Averaged Navier-Stokes (RANS) calculations, underscoring the necessity of mesh refinement studies to uphold precision in CFD simulations. Mesh refinement studies are vital for guaranteeing accuracy in mesh parameters, emphasizing the importance of incorporating Inflation layers, growth ratio, and the number of layers in these studies.