The Reflected Impulse on a Curved Wall Produced by a Spherical Explosion in Air
Abstract
The paper deals with the impulse on a concave wall resulting from the reflection of the spherical blast wave of an explosion in air. This situation arises when a spherical blast wave hits a non-planar surface, such as the wall of a containment vessel. Two types of surfaces are considered, cylindrical and spherical, in addition to the standard plane wall. The work is based on computations with the PISCES two-dimensional flow code, employing second order numerical schemes. The results for the plane surface are compared with the compiled experimental data in the literature. The study was carried out for a 2 Kg TNT charge at a distance of 1 m from the surface, assuming that the radii of the cylinder or sphere are also 1 meter. It was found that the reflected impulse on a cylindrical surface is approx. 18% over the plane wall case. For a spherical wall the reflected impulse (for the first shock reverberation) is about 50% over the plane wall impulse.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1992
- Accession Number
- ADA514156
Entities
People
- Y. Kivity