A solution for the quasi-one-dimensional linearised Euler equations with heat transfer

The unsteady response of nozzles with steady heat transfer forced by acoustic and/or entropy waves is modelled. approach based on the quasi-one-dimensional linearised Euler equations. equations are cast in terms three variables, namely dimensionless mass, stagnation temperature and fluctuations, which invariants system at zero frequency no transfer. resulting first-order differential then solved using Magnus expansion method, where perturbation parameters normalised volumetric In this work, a measure flow non-isentropicity (in case transfer) used for first time as an parameter. solution method was applied to converging–diverging nozzle constant both subcritical supercritical cases, showing good agreement numerical predictions. It observed that functions strongly depend