在二维情况下,忽略热扩散效应,利用汉克尔积分变换法和最陡下降法,求解热扩散方程和波动方程,得出了位移的解析表达式。
The thermal equation and wave equation are solved by the methods of Hankel transform and steepest descent, and the general expression of displacement is obtained.
在微波真空干燥过程中,就整个板材而言,热扩散效应对木材中水分迁移的影响不大,但在局部的有限范围内,它对自动平衡木材内含水率具有显著的作用。
During the drying process of MV, for the whole board, the effect of thermal diffusion on moisture movement is not significant, but it can cause a leveling of moisture profile in a local range of wood.
报道了一种用激光光热效应直接测量纳米材料热扩散率的方法。
A method of using the photothermal effect in the direct measurement of diffusivity of nanometer materials is reported.
当激光器上升沿变陡时,在有效作用时间内温度上升得更快,对加工区域周围热效应的影响明显减弱,而热扩散距离变小。
When the rise time is steeper, the temperature rises faster, and the surrounding of the machining filed are less affected while the distance of the thermal diffusion reduces.
当激光器上升沿变陡时,在有效作用时间内温度上升得更快,对加工区域周围热效应的影响明显减弱,而热扩散距离变小。
When the rise time is steeper, the temperature rises faster, and the surrounding of the machining filed are less affected while the distance of the thermal diffusion reduces.
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