Measurement and modeling of interface heat transfer coefficients

Conference · Tue Jan 01 04:00:00 EST 1985

OSTI ID:6219456

Rollett, A D; Lewis, H D; Dunn, P S

The results of preliminary work on the modeling and measurement of the heat transfer coefficients of metal/mold interfaces is reported. The system investigated is the casting of uranium in graphite molds. The motivation for the work is primarily to improve the accuracy of process modeling of prototype mold designs at the Los Alamos Foundry. The evolution in design of a suitable mold for unidirectional solidification is described, illustrating the value of simulating mold designs prior to use. Experiment indicated a heat transfer coefficient of 2 kW/mS/K both with and without superheat. It was possible to distinguish between solidification due to the mold and that due to radiative heat loss. This permitted an experimental estimate of the emissivity, epsilon = 0.2, of the solidified metal.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6219456
• Report Number(s): LA-UR-85-4367; CONF-860132-1; ON: DE86004744
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
ACTINIDES
CARBON
CASTING
CASTING MOLDS
ELEMENTAL MINERALS
ELEMENTS
EMISSIVITY
ENERGY TRANSFER
FABRICATION
GRAPHITE
HEAT TRANSFER
INTERFACES
METALS
MINERALS
NONMETALS
OPTICAL PROPERTIES
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SOLIDIFICATION
SURFACE PROPERTIES
URANIUM