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首页> 外文会议>The 2001 ASME International Mechanical Engineering Congress and Exposition, 2001, Nov 11-16, 2001, New York, New York >TRANSIENT RADIATION ELEMENT METHOD FOR THREE-DIMENSIONAL SCATTERING, ABSORBING, AND EMITTING MEDIA
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TRANSIENT RADIATION ELEMENT METHOD FOR THREE-DIMENSIONAL SCATTERING, ABSORBING, AND EMITTING MEDIA

机译：三维散射，吸收和发射介质的瞬态辐射单元法

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摘要

In this study transient radiative heat transfer is investigated in scattering, absorbing, and emitting media. The radiation element method is formulated for the first time to solve the transient radiative transfer equation in 3-D geometries. The sensitivity and accuracy of the method are examined. A good agreement of temporal transmittance predicted by the present method and Monte Carlo method is found. The characteristics of transient analysis are investigated via various problems of radiative transfer in inhomogeneous cubes. It is found that the transmitted signals are strongly affected by the inhomogeneous properties of the media through which the radiation has passed. In the position where the radiation travels a larger optical thickness, the broadening of the transmitted pulse width is more obvious and the magnitude of the transmittance is smaller.
机译：在本研究中，研究了散射，吸收和发射介质中的瞬态辐射热传递。首次制定了辐射元素方法，以求解3-D几何形状中的瞬态辐射传递方程。检查了该方法的灵敏度和准确性。发现本方法和蒙特卡罗方法预测的时间透射率具有良好的一致性。通过非均质立方体中的各种辐射转移问题研究了瞬态分析的特征。已经发现，所发射的信号受到辐射所通过的介质的不均匀特性的强烈影响。在放射线传播的光学厚度较大的位置，透射脉冲宽度的变宽更加明显，并且透射率的幅度较小。

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