Accession Number:

ADA179070

Title:

A Computer Fallout Code Using Variable Winds for Operational Type Studies

Descriptive Note:

Master's thesis

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s):

Report Date:

1987-03-01

Pagination or Media Count:

157.0

Abstract:

A radioactive fallout code, HYDRA, has been developed that uses real winds to determine dose rate contours on the ground. These winds are calculated from spectral coefficients derived by the National Meteorological Center. HYDRA models the radioactive dust cloud as a set of pancake clouds, each cloud representing a different particle size group. Each particle size group is transported to the ground through a discretely layered atmosphere using McDonald-Davies fall mechanics. Dose rate contours are determined by smearing the cloud activity along the ground as the cloud descends. HYDRA was evaluated against another variable wind fallout code named REDRAM. The two codes produced identical hotlines. HYDRA is capable of overlaying dose rate contours on global maps through the use of DISSPLA software. A copy of the HYDRA source code is included in the report.

Subject Categories:

  • Radiobiology
  • Radioactivity, Radioactive Wastes and Fission Products

Distribution Statement:

APPROVED FOR PUBLIC RELEASE