H-division quarterly report, October--December 1977. [Lawrence Livermore Laboratory]

Technical Report · Fri Feb 10 00:00:00 EST 1978

DOI:https://doi.org/10.2172/5052349· OSTI ID:5052349

The Theoretical EOS Group develops theoretical techniques for describing material properties under extreme conditions and constructs equation-of-state (EOS) tables for specific applications. Work this quarter concentrated on a Li equation of state, equation of state for equilibrium plasma, improved ion corrections to the Thomas--Fermi--Kirzhnitz theory, and theoretical estimates of high-pressure melting in metals. The Experimental Physics Group investigates properties of materials at extreme conditions of pressure and temperature, and develops new experimental techniques. Effort this quarter concerned the following: parabolic projectile distortion in the two-state light-gas gun, construction of a ballistic range for long-rod penetrators, thermodynamics and sound velocities in liquid metals, isobaric expansion measurements in Pt, and calculation of the velocity--mass profile of a jet produced by a shaped charge. Code development was concentrated on the PELE code, a multimaterial, multiphase, explicit finite-difference Eulerian code for pool suppression dynamics of a hypothetical loss-of-coolant accident in a nuclear reactor. Activities of the Fluid Dynamics Group were directed toward development of a code to compute the equations of state and transport properties of liquid metals (e.g. Li) and partially ionized dense plasmas, jet stability in the Li reactor system, and the study and problem application of fluid dynamic turbulence theory. 19 figures, 5 tables. (RWR)

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5052349
• Report Number(s): UCRL-50028-77-4; TRN: 78-009688
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
22 GENERAL STUDIES OF NUCLEAR REACTORS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
LAWRENCE LIVERMORE LABORATORY
RESEARCH PROGRAMS
MATERIALS
EQUATIONS OF STATE
MECHANICAL PROPERTIES
EQUILIBRIUM PLASMA
LITHIUM
MELTING
METALS
VERY HIGH TEMPERATURE
PLATINUM
SOUND WAVES
VELOCITY
FINITE DIFFERENCE METHOD
LOSS OF COOLANT
P CODES
LIQUID METALS
TURBULENT FLOW
ACCIDENTS
ALKALI METALS
COMPUTER CODES
ELEMENTS
EQUATIONS
FLUID FLOW
FLUIDS
ITERATIVE METHODS
LIQUIDS
NATIONAL ORGANIZATIONS
NUMERICAL SOLUTION
PHASE TRANSFORMATIONS
PLASMA
PLATINUM METALS
REACTOR ACCIDENTS
TRANSITION ELEMENTS
US AEC
US ERDA
US ORGANIZATIONS
360000* - Materials
220900 - Nuclear Reactor Technology- Reactor Safety
640410 - Fluid Physics- General Fluid Dynamics