The Usage of Grid-Characteristic Method for the Simulation of Flows with Detonation Waves
The chapter is dedicated to the numerical investigation of the strongly unstable mode of pulsating gaseous detonation wave propagation using two approaches. In the first one, the problem is solved in the laboratory frame and the detonation is initiated near the closed end of the channel. In the second approach, the modeling is carried out in the shock-attached frame. For this purpose, we proposed the numerical algorithm for the integration of shock evolution equation using a grid-characteristic method. The algorithm is characterized by the second approximation order. The mechanisms of two qualitatively different regimes of pulsations are described.
KeywordsDetonation wave Numerical modeling Grid-characteristic method Shock-attached frame
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