BV Solutions to 1D Isentropic Euler Equations in the Zero Mach Number Limit

2015/09/05 by Colombo, Rinaldo M., Guerra, Graziano
#35L65 #35Q35 #76N99 #Analysis of PDEs (math.AP) #FOS: Mathematics

paper · doi:10.48550/arxiv.1509.01717

Abstract

Two compressible immiscible fluids in 1D and in the isentropic approximation are considered. The first fluid is surrounded and in contact with the second one. As the Mach number of the first fluid vanishes, we prove the rigorous convergence for the fully non--linear compressible to incompressible limit of the coupled dynamics of the two fluids. A key role is played by a suitably refined wave front tracking algorithm, which yields precise BV, L¹ and weak* convergence estimates, either uniform or explicitly dependent on the Mach number.

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