Accession Number:

ADA409724

Title:

Mathematical Modeling, Simulation, and Control of Physical Processes

Descriptive Note:

Final rept. 1 May 1999-28 Feb 2002

Corporate Author:

WRIGHT STATE UNIV DAYTON OH DEPT OF MATHEMATICS AND STATISTICS

Personal Author(s):

Report Date:

2002-02-01

Pagination or Media Count:

26.0

Abstract:

Concerning the ablation plume phenomenon, a computational model for the interaction of laser energy with solid matter was developed, as well as analytical and computational models for the plume hydrodynamics, including the chemical reactions. A first task was to understand which variables are the most important. There are approximately 20 input variables that can be varied during the process. Some of these are field parameters, other depend on time, while others, such as electromagnetics, are time-varying fields. Contrasted with the many input variables are the desired outcomes from the film. Naturally, there is not time for experiments that vary all of the inputs and to measure the effect on these outcomes as the dimensional complexity is overwhelming. We needed to reduce the experimental effort, via straightforward polynomial regression experimental design and adaptive learning data mining response surface methods. The interaction of laser energy with a solid material takes many different forms depending on the power input and the material properties. That is, thermal conduction is the main methods of energy transport. The justification is that energy transferred is spread out over a vibrationally long time period.

Subject Categories:

  • Lasers and Masers
  • Computer Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE