I have a doubt regarding the Knudsen Number. In the OpenLB data file, one can see that Knudsen number is calculated by Mach number divided by Reynolds Number.
However, the formula for Knudsen number based on Reynolds Number and Mach number is :
Where γ is ratio of specific heats.
So, could you give me the reason why this formula not implemented in OpenLB? I am actually simulating flows based on knudsen number.