Radiant transfer due to lighting: An example of symbolic model generation for the simulation problem analysis kernel

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:7026446

Sowell, E F ^[1]; Nataf, J -M; Winkelmann, F ^[2]

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1. California State Univ., Fullerton, CA (USA). Dept. of Computer Science
2. Lawrence Berkeley Lab., CA (USA)

The Simulation Problem Analysis Kernel (SPANK) is a simulation environment under development at Lawrence Berkeley Laboratory. A principal departure from other simulation environments is that system models are constructed from submodel objects that are defined without prescribed input or output interfaces, yielding greater modeling flexibility. Also, graph theoretic techniques are employed to determine the solution sequence, including reduction of the iterative problem size. In this paper we show one role of symbolic manipulation in SPANK processing, namely automatic generation of submodels using the MACSYMA{trademark} package. This is demonstrated in the context of steady state radiant and convective heat transfer in a room with a fluorescent lighting system, and then in the corresponding dynamic context. Submodel definition and generation are described, followed by the solution of several interesting problems defined with the submodels. 11 refs.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• Sponsoring Organization: DOE/CE
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 7026446
• Report Number(s): LBL-28273; CONF-900182--2; ON: DE90013360
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
COMPUTER CODES
COMPUTERIZED SIMULATION
CONVECTION
ENERGY SYSTEMS
ENERGY TRANSFER
FLUORESCENT LAMPS
HEAT TRANSFER
KERNELS
LIGHT BULBS
LIGHTING SYSTEMS
M CODES
MASS TRANSFER
RADIANT HEAT TRANSFER
S CODES
SIMULATION