Why I cannot apply a constant speed in the Harmonic Response? (Like the "rotational velocity" in the static structural analysis)

 In harmonic response analysis, applying a constant speed like in static structural analysis isn't possible because harmonic analysis focuses on the response of a system to varying excitation forces over a range of frequencies.

How to use timeVaryingMappedFixedValue in OpenFoam?

 The timeVaryingMappedFixedValue boundary condition in OpenFOAM allows you to prescribe values that vary in time and space on a patch. Here's a breakdown of its usage with the interFoam solver:

Divergence detected in AMG solver - How to solve this error ?

 The "Divergence detected in AMG solver" error in ANSYS Fluent indicates that the Algebraic Multigrid (AMG) solver is struggling to converge. This can arise from several factors, including:

When to use pressure based solver and when density based solver in Ansys Fluent ?

 Choosing the right solver in ANSYS Fluent depends on the nature of your fluid flow simulation:

Pressure-Based Solver:

 * Ideal for incompressible flows (constant density) or low Mach number flows (below 0.3).

How to calculate OSI, Ig factor, Area averaged wall shear and time averaged wall shear in Ansys fluent?

Calculating the Oscillatory Shear Index (OSI), Ig factor, Area Averaged Wall Shear Stress (AAWSS), and Time Averaged Wall Shear Stress (TAWSS) in ANSYS Fluent involves several steps. Here's a general guide to help you with the process:

ERROR: The UDF library you are trying to load (libudf) is not compiled for parallel use on the current platform (win64)

This error indicates that you're trying to load a User Defined Function (UDF) library in ANSYS Fluent that wasn't compiled for parallel processing on your 64-bit Windows system (win64).

How can I prevent ANSYS Mechanical from renumbering cell zones/walls after mesh refinement, thereby ensuring my journal file remains compatible?

 ANSYS Mechanical renumbering cell zones/walls after mesh refinement is a common issue when dealing with journal files. Here are two approaches to address this: