stiff numerical -- CFD Online Discussion Forums

October 24, 2000, 01:02	stiff numerical	#1
Felipe Figueroa Guest Posts: n/a	Hi, my name is Felipe and have the followin question: In the Fluent manual, chapter 17, for the coupled solver say - "The Navier-Stokes equations become (numerically) very stiff at low Mach number due to the disparity between the fluid velocity v and the acoustic speed c (speed of sound)." - that it means that the equation becomes numerically stiff?. does this have some physical meaning?

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