Support Knowledge Base

Fluid Dynamics Solutions

1174: COMSOL freezes when clicking on the Initial Values node in a...

When clicking on the Initial Values node of the Turbulent Flow interface, the table for entering the initial velocity in the settings window for the Initial Values node starts toggling between 2 different sizes. This...
Version: 4.4 - Platform: Windows

1165: Updating older models to use new Crosswind Diffusion formulation

In COMSOL 4.3b (released May 2013) the Crosswind diffusion formulation was updated for all flow interfaces supporting Crosswind diffusion. This means that models solved with the new formulation, i.e in COMSOL 4.3b and...
Version: 4.3b,4.4 - Platform: All Platforms

1152: Surface roughness in turbulent flow

Can I use the relative surface roughness parameter in turbulent flow models? In the 1D **Pipe Flow** interface, empirical correlations for friction factors are used for pressure drop calculations. Here you can enter a...
Version: All versions,4.4 - Platform:

1105: Difference between Solute Transport and Species Transport in Porous...

The two physics interfaces Solute Transport (available in the Subsurface Flow Module) and Species Transport in Porous Media (available in the Chemical Reaction Engineering Module, and the Batteries & Fuel Cells Module)...
Version: 4.0,4.0a,4.1,4.2a - Platform:

1104: Stabilization schemes in COMSOL

How can I see which stabilization schemes are used by COMSOL Multphysics in transport physics interfaces such as Single-Phase Flow and Transport of Diluted species? Numerical solutions of transport equations can...
Version: 4.1,4.2 - Platform: