Abstract:

Shock wave absorber is the most important component of thermal separator.This paper focuses on shock wave absorber by way of numerical simulation and experiment.The conclusions are as follows：two discontinuities in oscillating tube，shock wave and contact surface，can be captured very well by numerical simulation.Moreover，the reflected shock wave amplitude is reducing with increasing diameter ratio D/d and increasing length diameter ratio L/d.The paper proposes a new kind of structure，serial shock wave absorber and suggests that the two-stage series absorber is a better choice which can effectively weaken the reflected shock wave at an expansion ratio less than 6，compared with the three-stage one.