Accession Number:

ADA025260

Title:

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

Descriptive Note:

Final rept.

Corporate Author:

SYSTEMS SCIENCE AND SOFTWARE LA JOLLA CA

Personal Author(s):

Report Date:

1976-04-01

Pagination or Media Count:

119.0

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.

Subject Categories:

  • Properties of Metals and Alloys
  • Numerical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE