Motion of a weak shock wave in a porous tube
Abstract
An experimental and theoretical investigation of the motion of a shock wave (M/s/ = 1.12) in a porous tube, 0.023 m internal diameter and 1.35 m long, is described. Five different porosities were simulated by progressively sealing the external surface. Spatial attenuation of the shock wave for the five porosities has been measured and compared with that when the tube was completely sealed as well as in a tube with solid walls. Spatial attenuation is linear if the cross mass-flow/unit area is constant. In a suitable co-ordinate framework all the results collapse on a single line indicating a common mechanism of attenuation. For the porous tube a linearized characteristics equation has been integrated using empirical cross mass-flows/unit area for the five porosities. Agreement between theory and experiment is good.
- Publication:
-
Shock Tubes and Waves
- Pub Date:
- 1984
- Bibcode:
- 1984stw..symp..239D
- Keywords:
-
- Porous Walls;
- Shock Tubes;
- Shock Wave Attenuation;
- Shock Wave Propagation;
- Cross Flow;
- Mass Flow;
- Porosity;
- Fluid Mechanics and Heat Transfer