Unidirectional Propagation of Gas Detonations in Channels with Sawtooth Walls

We study the detonation propagation in a channel geometry that suppresses detonation propagation in one direction, allows it in other direction, and does not create flow restrictions in the channel. The geometry consists of a series of divergent sections separated by wedges that form a sawtooth shape. Numerical simulation show that the detonation fails to propagate through this geometry in one direction because the detonation front is weakened by diffraction, and reignition centers are isolated from the main channel. In opposite direction, convergent parts of geometry support the detonation propagation.