Numerical solution method for Schwarz Christoffel transformation from unit circle to arbitrary polygon area(单位圆到任意多边形区域的Schwarz Christoffel变换数值解法)
Schwarz Christoffel变换技术在处理某些工程问题时具有重要作用.从黎曼存在定理出发,建立了单位圆到任意多边形区域的映射函数Schwarz Christoffel变换模型,采用Levenberg-Marquardt算法求解含约束条件的非线性映射函数Schwarz Christoffel变换模型参数系统.针对映射函数中出现的奇异积分问题,对映射函数进行2次参数变换,将其化为高斯雅克比型积分,以积分路径中的奇异点为界,缩短积分路径,对子路径采用修正高斯积分方法进行计算.通过指数变换、连乘变换和累加变换,使任意初值问题均可进行迭代计算并满足初值的约束条件.提出以边长绝对误差和顶点绝对误...
Main Authors: | CUIJianbin(崔建斌), JIAnzhao(姬安召), WANGYufeng(王玉风), YUJiangtao(于江涛), ZHOUHualong(周华龙) |
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Format: | Article |
Language: | zho |
Published: |
Zhejiang University Press
2017-03-01
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Series: | Zhejiang Daxue xuebao. Lixue ban |
Subjects: | |
Online Access: | https://doi.org/10.3785/j.issn.1008-9497.2017.02.007 |
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