Evaluation of the Chemical Laboratory TNO Circular Slide Rule for Hazard Calculations.

Abstract

The Chemical Laboratory TNO of the Netherlands has developed a circular slide rule for estimating hazard distances downwind from ground-level point and line sources. The purpose of the work described in this technical report is to evaluate the effectiveness of the slide rule in calculating hazard distances and to compare hazard distances obtained from the slide rule with those calculated from models currently used by the U.S. Army. The study shows that the Chemical Laboratory TNO slide rule provides a convenient and effective means for the field personnel, relatively unskilled in dispersion calculations, to estimate hazard distances. Hazard distances obtained using the TNO slide rule are generally in good agreement with those calculated from DPG models. Some minor changes are suggested in the slide rule scales for neutral meteorological conditions and in the procedures for determining stability classifications.

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1975
Accession Number
ADA009751

Entities

People

  • R. K. Dumbauld

Tags

DTIC Thesaurus Topics

  • Agreements
  • Buildings And Structures
  • Chemical Laboratories
  • Classification
  • Dispersions
  • Ground Level
  • Netherlands
  • Research Facilities
  • Test And Evaluation

Readers

  • Aerosol Science/Aerosol Physics
  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Graph Algorithms and Convex Optimization.