Numerical Simulation of the Collapse of an Underwater Explosion Bubble
Abstract
This project demonstrates the usefulness of front tracking as a tool to study the fully compressible axially symmetric expansion and collapse of an underwater explosion bubble in two spatial dimensions. In the pilot project supported by this contract, a one-dimensional version of the front tracking code is being implemented to compute spherically symmetric oscillations. The one dimensional version will be used to gain expertise in the problem, to pinpoint areas of difficulty, and to determine the feasibility of using the two dimensional front tracking method for this problem. A one dimensional, tracked random choice code adapted for this pilot project is validated on published computational and experimental results. As a result of these validation studies, indentified problem areas are identified, which include the necessity for realistic equations of state for the explosion products, implementation of effective boundary conditions that would take into account the progress of the primary shock wave into the water without the necessary of keeping it within the computational domain, improved treatment of the divergence at the bubble center by analytic means, and correct initiation of the explosion remnants.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1988
- Accession Number
- ADA203860
Entities
People
- W. B. Lindquist
Organizations
- New York University