The heating and ignition process of energetic material particles under the action of the laser is investigated using numerical simulation. Due to the two characteristics of the high energy density of the laser and the high transients of the whole process, an accurate description is required with the help of the non-Fourier heat transfer theory. The corresponding mathematical model in the form of partial differential equations is developed for the laser action on the spherical particles. In the process of numerically solving the partial differential equation, adaptive grid method based on wavelets is introduced to improve the finite difference method. Based on the comparison of ignition delay time, the results obtained from numerical calculations are in agreement with the data from experimental tests.

中文翻译：

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考虑非傅里叶效应的高能粒子激光点火过程

数值模拟研究了激光作用下含能材料粒子的加热和点火过程。由于激光的高能量密度和整个过程的高瞬态这两个特点，需要借助非傅里叶传热理论进行准确的描述。以偏微分方程的形式建立了相应的数学模型，用于激光对球形颗粒的作用。在数值求解偏微分方程的过程中，引入了基于小波的自适应网格法对有限差分法进行了改进。通过点火延迟时间的比较，数值计算得到的结果与实验数据一致。