In this paper, we propose a series expansion of the baroclinic torque in low-Mach-number flows, so that accuracy and universality any buoyancy term could be examined analytically, new types terms constructed validated. We first demonstrate purpose introducing is to approximate torque, straightforwardly error defined with deviation its curl from corresponding torque. Then regular perturbation me...

Artificial compressibility methods aim to reduce the stiffness of compressible Navier-Stokes equations by artificially decreasing velocity acoustic waves in fluid. This approach has originally been developed as an alternative incompressible this avoids resolution a Poisson equation. paper extends method anisothermal low Mach number flows, allowing simulations subsonic flows submitted large temp...