The Effect of Water Content on the Predictions of the Cloud Rise Module of DELFIC
Abstract
The effect of water content on the predictions of the Cloud Rise Module (CRM) of the Defense Land Fallout Information Code, (DELFIC) was examined. Problems with the theory of the CRM were found, especially how it handled the cloud's water content. The source code of the CRM was also found to have some contradictions with its documentation. All of the problems found with the CRM were addressed and a new version of DELFIC was created. This new version was then used to examine the predicted nuclear cloud height and volume for different humidity profiles and surface water mass loading of the cloud. Increasing the atmospheric humidity resulted in a higher stabilized cloud top altitude and larger volume; increasing the surface water loading resulted in a lower stabilized cloud top and a smaller cloud volume. The effect of soil loading was examined, and found to produce only slight changes in the stabilized cloud top and volume. Results found with the revised CRM were compared to the results found using the original CRM. Both versions followed the same trends as the humidity profiles were changed, but the results found for the surface water loading case were very divergent. The differences in the results of the two versions suggest the results of the revised CRM are more valid. Keywords: Nuclear explosion simulation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1988
- Accession Number
- ADA194618
Entities
People
- Bryan M. Minor
Organizations
- Air Force Institute of Technology