Airblast Simulator Studies.
Abstract
The effects of flow blockage in a blast simulator were investigated and means sought to mitigate those effects. Flow characteristics were studied by two-dimensional hydrodynamic calculations for flared and vented test chambers as compared with straight tubes at similar blockage. Several conditions up to 30 psi blast overpressure and 30% blockage were investigated. It was shown that the diffraction phase of blast interaction was best reproduced in a straight tube in spite of blockage. Flared and vented designs seemed to reproduce desired conditions better in the drag phase. In general, blockage effects did not seem as dramatic as suggested by the flow choking concept. Driver options potentially useful in the reactivation of DASACON were investigated. Gas detonation and combustion systems seemed capable of producing conditions covering the entire range of Army blast simulation in interest. DASACON with a gas detonation driver could be useful in Hardened Mobile Launcher or some Army Applications, but it would not satisfy the requirements for a large blast simulation facility.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1984
- Accession Number
- ADA161730
Entities
People
- Ki Lie
- L. Kennedy
- R. E. Duff