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math.AP2026
An Inverse Problem for Determining the Piston Speed from a Given Lipschitz Leading Shock
Gui-Qiang G. Chen, Qianfeng Li, Yun Pu +1
We analyze an inverse problem for determining the piston speed and the associated flow field from a prescribed leading shock and the initial data in a shock tube. The gas flow is d…
math.AP2026
Weak-Strong Uniqueness for a Rigid Body Immersed in an Inviscid Compressible Fluid
Qianfeng Li, Emil Wiedemann
We consider the coupled motion of a free rigid body immersed in an inviscid compressible isentropic fluid. By means of a vanishing viscosity limit, we obtain the local-in-time exis…