A Revolution in Heat Conduction Software

Period of Performance: 03/14/2002 - 03/28/2004

$730K

Phase 2 SBIR

Recipient Firm

Continuum Dynamics, Inc.
34 Lexington Avenue Array
Ewing, NJ 08618
Principal Investigator

Abstract

In many applications of current and near-future interest, significant departures from Fourier's law are observed in the thermal conduction processes of engineering materials important to Army applications. Such discrepancies may result in inadequate protection, excessive weight or premature hardware failure. To correct this, non-Fourier conduction modeling can be exploited to optimize current design tools. In particular, the dual phase lag (DPL) thermal model can be used to provide a very general description for the thermal response of many materials both at the microscale and macroscale. In Phase I, we successfully developed a 1D DPL model and demonstrated potential thermal lag problems with a rocket nozzle design. In Phase II, we propose to: (i) develop a 3D finite element model of the DPL equation; (ii) construct an easy-to-use graphical interface to simplify problem set up; (iii) interface the DPL model with the ABAQUS finite element software; and (iv) conduct experiments to determine the phase lags for selected materials used by the Army. Successful completion of this effort will provide the Army with the software and material data necessary to analyze rapid thermal transients in rocket nozzles, and heat transfer in various applications such as nanotechnology, laser technology, and MEMS.