Abstract

The computation of low speed flows can usualy be performed by incompressible models or various Low Mach number approximations (Boussinesq, Anelastic, etc). However, there is a large number of flows where although the velocities are small, compressible effects cannot be ignored and the use of full compressible models is required. Unfortunately, standard finite element or finite volume method experiences various difficulties in the computation of these low Mach number flows. This talk will explain the origin of these difficulties and describe some techniques to circumvent them.

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