Computer fallout code using variable winds for operational-type studies. Master's thesis

Technical Report · Sun Mar 01 04:00:00 EST 1987

OSTI ID:6355019

Strines, A B

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.

• Research Organization: Air Force Inst. of Tech., Wright-Patterson AFB, OH (USA). School of Engineering
• OSTI ID: 6355019
• Report Number(s): AD-A-179070/8/XAB; AFIT/GNE/ENP-87M-7
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450202* -- Explosions & Explosives-- Nuclear-- Weaponry-- (-1989)
500300 -- Environment
Atmospheric-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ATMOSPHERES
CLOUDS
COMPUTERIZED SIMULATION
EXPLOSIONS
FALLOUT
LAYERS
MAPS
MATERIALS
METEOROLOGY
NUCLEAR EXPLOSIONS
PARTICLE SIZE
RADIATION DOSE DISTRIBUTIONS
RADIOACTIVE MATERIALS
SIMULATION
SIZE
SPECTRA
WIND