HEATING 7. 1 user's manual

Technical Report · Mon Jul 01 00:00:00 EDT 1991

DOI:https://doi.org/10.2172/5115684· OSTI ID:5115684

Childs, K W

HEATING is a FORTRAN program designed to solve steady-state and/or transient heat conduction problems in one-, two-, or three- dimensional Cartesian, cylindrical, or spherical coordinates. A model may include multiple materials, and the thermal conductivity, density, and specific heat of each material may be both time- and temperature-dependent. The thermal conductivity may be anisotropic. Materials may undergo change of phase. Thermal properties of materials may be input or may be extracted from a material properties library. Heating generation rates may be dependent on time, temperature, and position, and boundary temperatures may be time- and position-dependent. The boundary conditions, which may be surface-to-boundary or surface-to-surface, may be specified temperatures or any combination of prescribed heat flux, forced convection, natural convection, and radiation. The boundary condition parameters may be time- and/or temperature-dependent. General graybody radiation problems may be modeled with user-defined factors for radiant exchange. The mesh spacing may be variable along each axis. HEATING is variably dimensioned and utilizes free-form input. Three steady-state solution techniques are available: point-successive-overrelaxation iterative method with extrapolation, direct-solution (for one-dimensional or two-dimensional problems), and conjugate gradient. Transient problems may be solved using one of several finite-difference schemes: Crank-Nicolson implicit, Classical Implicit Procedure (CIP), Classical Explicit Procedure (CEP), or Levy explicit method (which for some circumstances allows a time step greater than the CEP stability criterion). The solution of the system of equations arising from the implicit techniques is accomplished by point-successive-overrelaxation iteration and includes procedures to estimate the optimum acceleration parameter.

• Research Organization: Oak Ridge K-25 Site, TN (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OT21400
• OSTI ID: 5115684
• Report Number(s): K/CSD/TM-96; ON: DE92002040
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
HEAT TRANSFER
H CODES
BOUNDARY CONDITIONS
FINITE DIFFERENCE METHOD
FORTRAN
MANUALS
PHASE CHANGE MATERIALS
SPECIFIC HEAT
STEADY-STATE CONDITIONS
THERMAL CONDUCTION
THERMODYNAMIC PROPERTIES
TRANSIENTS
COMPUTER CODES
DOCUMENT TYPES
ENERGY TRANSFER
ITERATIVE METHODS
MATERIALS
NUMERICAL SOLUTION
PHYSICAL PROPERTIES
PROGRAMMING LANGUAGES
420400* - Engineering- Heat Transfer & Fluid Flow
990200 - Mathematics & Computers