The charge utilization ratio is high for multi-point ignition tube experiments in a high-pressure gun, but the chamber pressure wave is high.

In order to reduce pressure wave and improve the solution, numerical simulation has been made of the process of multi-point ignition by applying the two-phase flow internal ballistics theory.

If it is too dark to see what you are doing, use a flashlight rather than pulling the fireworks closer to see the ignition point.