Yerzhan Kenzhebek

Identifiability and Conditioning of Flux-Parameter Inversion for the Buckley–Leverett Equation

We analyse inversion of the viscosity ratio M in the Buckley–Leverett equation, distinguishing structural identifiability, observation-operator conditioning, and numerical estimation error. The Riemann solution gives M=4s2−4s from the shock speed s, with relative condition number...