Software Package for Inverse Design of Enclosures with Radiative Transfer

Background Inverse thermal radiative design problems are those in which the desired result is specified (i.e., heating rate and temperature distribution) and the necessary conditions for achieving this result are found directly (i.e., heater or burner configuration and energy input distribution). The mathematics of inverse problems result in an ill-conditioned matrix requiring special techniques to find the solution.

Invention Description Inverse radiative design techniques can eliminate much of the trial and error used in conventional or "forward" thermal design. Accurate determination of initial design parameters by inverse analysis can provide the necessary starting point for a detailed design using conventional detailed programs. These techniques promise to allow designers more accurate determination of the best design for their particular needs, and will not severely limit the number of cases that can normally be examined using conventional techniques. Some of the mathematical techniques for inverse design Monte Carlo, singular value decomposition (SVD), modified truncated singular value decomposition (MTSVD), and conjugate gradient, as well as their relative strengths and weaknesses are discussed, and the results generated by some of these techniques for some example problems are shown. Also indicated are some remaining challenges and opportunities for inverse design.

Benefits

More accurate design No limitations using conventional techniques Need for trial and error eliminated

Features

Techniques used: Monte Carlo Singular value decomposition Modified truncated singular value decomposition Conjugate gradient

Market Potential/Applications The best of the methods are implemented in a software package, RADINV, allowing the user to carry through inverse design while making the solution algorithms transparent to the user.

IP Status One U.S. copyrights registered

UT Researcher John R. Howell, Ph.D., Mechanical Engineering, The University of Texas at Austin Juan C. Morales, Mechanical Engineering, The University of Texas at Austin


OTC Contact Information , Licensing Associate

512-471-4738

Type of Offer: Licensing



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