Modified GRAY: An Improved Three-Phase Equation of State for Metals

Abstract

An improved version of the GRAY three-phase equation of state for metals is presented in this report. The Grover model for liquid metals is modified by employing a single continuous representation of the specific heat thereby eliminating the somewhat artificial hot liquid region. A soft sphere representation is incorporated into the modified van der Waals equation of state for the vapor region yielding a model which is physically realistic at high temperatures and more compatible with the Gover model. A continuous and thermodynamically consistent join procedure is inserted between the Gover liquid and van der Walls vapor regions. This new join procedure does not distort the van der Waals model in the vicinity of the critical point and allows the vapor to limit correctly at high temperatures and volumes.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1976
Accession Number
ADA025260

Entities

People

  • Robert A. Cecil
  • William O. Wray

Organizations

  • Utility Systems Science and Software (United States)

Tags

Communities of Interest

  • Advanced Electronics
  • Counter IED
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Birds
  • Computer Programming
  • Critical Temperature
  • Crystal Structure
  • Equations
  • Equations Of State
  • Free Energy
  • High Temperature
  • Ideal Gas Law
  • Isotherms
  • Liquid Metals
  • Materials
  • Military Research
  • Scaling Laws
  • Specific Heat
  • Specific Volume
  • Vapor Phases

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Materials Science and Engineering.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.