[msngae]

Hello everyone,

I'm trying to simulate a single shot pulse detonation engine with CH4-O2 and have been getting these pressure oscillations behind the reaction wave.

This is meant to be a point discontinuity as seen in the validation results from He and Karagozian, and I suspect it is due to the spatial or time discretization, but I have not been able to resolve this.

Solution method:
Coupled pressure-velocity solver
Least-Squares Cell based (Have tried the other two)
Standard pressure discretization (I've also tried Body Force Weighted and PRESTO!)
3rd order MUSCL for all others
2nd Order Implicit Transient Formulation.

[VonayJ]

Hey hi,
We are doing a project on designing a PDE.
Please can you help regarding how a PDE is designed?