This project is aimed at developing design strategies for high accuracy thermal control of the components being tested and is being performed for Kinetrix, Inc. , a Teradyne subsidiary. 34th Intersociety Energy Conversion Engineering Conference , Vancouver BC, August 1999. This study applies analytical and numerical models to investigate the heat fluxes achievable in plates using various heating configurations and different materials. The models consider both elastic and plastic behavior while incorporating the effects of temperature dependent thermal and mechanical properties. Extremely high heat fluxes generally induce plastic deformation, which provides significant stress relief.
Plastic effects can enable fluxes to increase by an order of magnitude before failure occurs.
We have developed a laser-induced fluorescence technique for measuring the local deposition rates of aerosols of 0.5 to 100 m diameter. The LIF technique provides substantially better spatial resolution of the amount of deposition than can be obtained using more traditional methods. Our present focus is on quantifying secondary factors that may confound the measurement, such as the slow statistical convergence of the deposited aerosols' spatial distribution. For example, we have developed analytical models for the statistical convergence which are in excellent agreement with measurements. Liquid Jet Impingement Cooling Liquid jets are often used to cool surfaces because the efficiency is high, and the hardware is simple.