Experimental simulation of in-bore flows using a high pressure shock tube
Abstract
In-bore flows were simulated in a rectangular barrel attached to the end of a shock tube. Barrel flow was investigated using the method of characteristics. Approximation formulas for the boundary layer formation behind the moving projectile were found. Pistons with and without gas leakage were investigated by flow visualization. Flow in front of the projectiles with gas leakage is strongly affected. Boundary layer formation behind the pistons is less influenced by gas leakage. At the moment when the projectile passes the thin film gage a maximum heat flux is produced by hot gas coming into direct contact with the cold barrel surface. This effect can lead to a strong thermal stress in the barrel wall.
- Publication:
-
Presented at 8th Intern. Symp. on Ballistics
- Pub Date:
- August 1984
- Bibcode:
- 1984ball.symp...23S
- Keywords:
-
- Flow Visualization;
- Gun Launchers;
- Interior Ballistics;
- Pipe Flow;
- Shock Tubes;
- Boundary Layer Flow;
- Leakage;
- Method Of Characteristics;
- Thermal Stresses;
- Fluid Mechanics and Heat Transfer