Simulation of Plane Underwater Shock Waves Using an Array of Point Volume Sources.
Final rept. 26 Mar 73-30 Jan 78,
SRI INTERNATIONAL MENLO PARK CA
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Experiments were conducted to test the concept of using point volume sources in a plane array to produce a plane shock wave in water that would simulate the shock wave from a nuclear explosion. The point volume sources were designed to produce gas volume at a constant rate, thereby producing a uniform shock wave. The volume sources consisted of a high pressure reservoir of explosive product gases and an orifice area that increases with time as the pressure in the reservoir decreases to maintain a constant rate of volume generation at each source. The tests consisted of two 20 x 20 ft array tests consisting of 100 point sources, and seven auxiliary tests. The tests showed that the point-source-to-plane wave concept is valid however, the waves from the point sources did not superpose linearly due to interaction of the bubbles. Of the problems encountered during the tests, all have a direct solution, except possibly the drag from the residue of the explosion products on the motion of the piston that controls the orifice area. Successful implementation of the suggested design modifications will make the array pipes and valves more watertight and thereby reduce the effect of the residue from the explosion products. Author
- Submarine Engineering