低温外科手术中多维相变问题的双倒易边界元模拟

Simulation on the multi-dimensional phase change problem during cryosurgery by the dual reciprocity boundary element method

提出了一个能用于具有复杂形状的区域的网格自动生成方法,从而将双倒易边界元方法推广应用于涉及相变运动界面的生物传热问题. 对低温外科手术中正常或内含肿瘤的生物组织的冷冻过程进行了数值模拟,分析了其中的一些传热机制.

An automatic grid generation algorithm for complex computational geometry is proposed to deal with the moving phase change interface during a cryosurgerical process. When the algorithm is incorporated into the dual reciprocity boundary element method, the freezing process of the biological bodies embedded with tumor and subjected to surface cryo-probe is successfully simulated. Some of the heat transfer mechanisms are thus better understood.