THERMAL PROTECTION FROM INTENSE LOCALIZED MOVING HEAT FLUXES USING PHASE-CHANGE MATERIALS

Various technologies which protect a wall from being burned out by an intense localized moving heat source have been reviewed, and a solution to this problem is proposed in which a phase-change material (PCM) is placed underneath the wall to absorb the high heat flux. The three-dimensional melting problem is nondimensionalized and modeled with a new enthalpy transforming scheme. The numerical results show that the proposed solution reduces the peak wall temperature significantly. The method of coating the PCM on the wall surface is also employed, which can maintain the surface temperature below the melting temperature of the PCM. © 1990.