A Computer Fallout Code Using Variable Winds for Operational Type Studies

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.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1987
Accession Number
ADA179070

Entities

People

  • Anthony B. Strines Jr.

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Biomedical
  • Cyber
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Classification
  • Computer Programs
  • Computers
  • Dose Rate
  • Engineering
  • Explosions
  • Explosives
  • Grids
  • Nuclear Explosions
  • Nuclear Fallout
  • Nuclear Weapons
  • Numbers
  • Particle Size
  • Wind
  • Wind Shear
  • Wind Velocity

Readers

  • Computer Science.
  • Explosive Engineering.
  • Nuclear Civil Defense.