Accession Number:

ADA459824

Title:

Development of a Practical Holistic Vehicle Thermal Model

Descriptive Note:

Corporate Author:

ARMY TANK-AUTOMOTIVE COMMAND WARREN MI

Personal Author(s):

Report Date:

2002-04-04

Pagination or Media Count:

11.0

Abstract:

Thermal modeling for military applications has historically focused on vehicle thermal signature or component engineering evaluation. The modeling tools vary drastically depending on the intended purpose. This paper identifies a modeling approach that produces a holistic vehicle thermal model applicable to signature evaluation, HVAC heat load assessment, and component thermal load evaluation. BKL-Prevu, Eclectic, and MuSES greatly simplify the modeling process and make it possible to model the complete vehicle system. BRL Prevu enables component selection and geometry manipulation. Eclectic uses a surface sampling process against existing CAD geometry to produce a well-conditioned mesh. MuSES obtains the models thermal solution using a finite difference approach. Models can now incorporate electronics and crew thermal footprints in conjunction with power train and environmental sources. This makes a total energy balance analysis possible. Conversion of chemical to mechanicalelectrical to thermal energy is predictable and traceable throughout the system. This paper discusses the model building process for a holistic vehicle thermal model applicable for signature and engineering analysis. Key issues such as model fidelity, mesh construction, and vehicle component omission are investigated. Integration of BKL-Prevu and Eclectic is demonstrated. The Bradley is used to illustrate the model building capability of this suite of computer codes.

Subject Categories:

  • Theoretical Mathematics
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE