四边形自适应网格的局部加密算法  

A local encryption algorithm for quadrilateral adaptive mesh

作　　者：王志明[1] 肖源明[2] 李留洋 王波 刘心志[1] Wang Zhiming;Xiao Yuanming;Li Liuyang;Wang Bo;Liu Xinzhi(Nanjing University of Science and Technology,Nanjing 210094,China;Nanjing University,Nanjing 210008,China;China Shipbuilding and Ocean Engineering Design and Research Institute,Shanghai 200011,China;the Palace Museum,Beijing 100009,China)

机构地区：[1]南京理工大学,江苏南京210094 [2]南京大学,江苏南京210008 [3]中国船舶及海洋工程设计研究院,上海200011 [4]故宫博物院,北京100009

出　　处：《无线互联科技》2023年第14期133-137,共5页Wireless Internet Technology

基　　金：国家重点研发计划项目,项目编号:2021YFC1523500。

摘　　要：在采用网格化模型对工程结构进行仿真运算时,为了提高计算效率,往往希望准确获得局部区域结构的精确解,从而舍弃对不必要结构的计算,故常采用局部网格加密算法。此外,局部网格加密方法还可以有效解决计算精度与计算时间之间的矛盾,具体表现为:在粗网格区域演化时间步较长,计算量较小,快速得到运算场的大致结构;在细网格区域则捕捉变化剧烈区域更加准确的数值变化,因此可以兼顾计算效率与精度。在此基础上,文章提出一种四边形网格的局部加密策略,并给出四边形网格上的局部加密的数值运算结果,以验证加密策略和算法的正确性。In order to improve the calculation efficiency,when using the grid model to simulate the engineering structure,it is often hoped to accurately obtain the accurate solution of the local area structure,so as to abandon the calculation of unnecessary structure,so the local grid encryption algorithm is often used.In addition,the local grid encryption method can effectively solve the contradiction between calculation accuracy and calculation time:specifically,the evolution time step in the coarse grid region is long,the calculation amount is small,and the approximate structure of the operation field is quickly obtained.In the fine grid area,more accurate numerical changes in areas with large changes are captured,so calculation efficiency and accuracy can be balanced.On this basis,a local encryption strategy of quadrilateral grid is proposed,and the numerical operation results of local encryption on the quadrilateral grid are given to verify the correctness of the encryption strategy and algorithm.

关 键 词：四边形网格 自适应 局部加密算法 正规网格 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]