导热增强型相变材料模拟钢板红外特征的优化设计

相变材料( PCM)具有很大的相变潜热，应用于红外示假目标的制作可实现全天候被动式红外示假，但PCM的低导热系数是实现较厚金属板材红外特征模拟的一个主要障碍。针对这个问题，探讨利用铝肋片导热增强型PCM模拟钢板红外特征的方法，建立数理模型，对一系列厚度较大钢板的红外特征模拟进行数值计算，研究肋片的分布密度、厚度以及PCM的厚度等因素对模拟效果的影响，得到用于模拟不同厚度钢板红外特征的PCM板的合理结构参数。

Optimization Design of Thermal Conduction Enhanced Phase Change Material Plates for Simulating the Infrared Signature of Steel Plate

Phase change material(PCM) with large latent heat can be applied to the preparation of the infrared false targets for realizing all-weather passive infrared decoy,but its low thermal conductivity is a great blockage to simulating infrared signature of thick metal plates.For that reason,a method of simulating the infrared signature of thick steel plates was proposed by the thermal conduction enhanced PCM including the aluminum fins.A physical and mathematic model was set up,and the infrared signature simulation of the thick steel plate was investigated numerically.The effect of the distribution density,thickness of fins and thickness of PCM plate on the simulation efficiency was discussed,and the reasonable construction parameters of PCM plate used to simulate the steel plate with different thickness were obtained.