Validation and Refinement of the DELFIC Cloud Rise Module

Abstract

The DELFIC Cloud Rise Module is refined to produce best agreement with stabilized cloud top heights observed from 53 nuclear test shots in the yield range from 21 T to 15 MT. Agreement with observed data, for both cloud tops and bases, is shown to be excellent in the yield range from 0.5 T to 15 MT. Simulated cloud rise and growth also are shown to be in accord with observation. DELFIC cloud top height results are compared with results calculated from a power function of yield. The power function is obtained by least squares curve fitting to observed data. DELFIC yields a proportional reduction in variance of cloud top discrepancies in log space of 59 percent. Sensitivity of resulst to model structure and to various parameter values is discussed. Use of the model for very high yields (20 to 100 MT) is explored. Limitations of model capability in this yield range are pointed out, and apparent anomalous results are explained. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 15, 1977
Accession Number
ADA047372

Entities

People

  • Hillyer G. Norment

Tags

Communities of Interest

  • Counter WMD
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Agreements
  • Air Force
  • Atmospheric Sciences
  • Calibration
  • Data Sets
  • Differential Equations
  • Energy
  • Energy Transfer
  • Equations
  • Explosions
  • Gas Laws
  • Kinetic Energy
  • Nuclear Clouds
  • Sensitivity
  • Simulations
  • Surface Burst
  • Validation

Readers

  • Approximation Theory.
  • Combustion science or combustion engineering.
  • Explosive Engineering.

Technology Areas

  • Space