PRISCILLA Calculations and Comparison with Data.
Abstract
The nuclear test PRISCILLA was performed as part of the Plumbbob series of tests in the summer of 1957. The four main objectives were to: (1) obtain overpressure and dynamic pressure as a function of time and distance; (2) document the formation and history of the precursor waveforms; (3) determine the applicability of scaling laws; and (4) determine the validity of the pressure-distance curve in the low-pressure region. Since these objectives were achieved, it is possible to make a thorough comparison of numerical simulations with the experimental data. Agreement between measurements and simulations builds confidence in subsequent theoretical calculations. The event Priscilla was simulated using the FAST2D Flux Corrected Transport code. Three calculations were performed to study the effects of the thermal layer along the ground and the entrained dust. Comparison between the experimental data and the calculation that includes both dust and the thermal layer show good agreement. Accurate modeling of the thermal layer and inclusion of the dust are required to simulate the precursor near the ground surface. New complex shock structure above the ground surface has been discovered. Keywords: Height of burst; Gas dynamic discontinuities.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 30, 1985
- Accession Number
- ADA155666
Entities
People
- D. L. Book
- M. A. Fry
- P. Kamath
Organizations
- United States Naval Research Laboratory