基于Koch曲线的土体孔隙三维可视化仿真  

Three Dimensional Visual Simulation of Soil Pore Based on Koch Curve

作　　者：王功明[1] 郭新宇[1] 赵春江[1] 王纪华 

机构地区：[1]国家农业信息化工程技术研究中心

出　　处：《系统仿真学报》2008年第3期662-665,668,共5页Journal of System Simulation

基　　金：国家十一五科技支撑计划(2006BAD10A07);北京市自然科学基金(4032011);北京市科技新星项目(2003B14)

摘　　要：土壤孔隙结构三维可视化是定量化研究和理解土体结构及土壤特性的重要基础。提出一种三维Koch曲线建模算法及基于Koch曲线的土壤孔隙三维可视化方法。应用广义能量极小值原理确定Koch曲线上转折点坐标;根据特定土壤土体孔隙结构特征进行土体孔隙三维重建,具体过程包括土体孔径变化控制、土体孔隙逐层绘制、土体孔隙分布控制和土体孔隙参数交互式控制。验证分析表明,在计算机上重建的土体孔隙能较好地表现特定土壤土体孔隙结构特征,具有较强真实感。The three dimensional visualization of soil channels structure is the vital foundation of studying and understanding soil structure and characteristics quantificationally. An arithmetic of constructing three dimensional Koch curve was put forward. After that, the three dimensional visual method of soil channels based on Koch curve was worked out. Minimal value principle of generalized energy was applied to compute coordinates of turning point on Koch curve. The three dimensional structure of soil channels was reconstructed based on the given soil channels structure characteristics, main courses of which included variational control of soil aperture, soil channels drawing layered, distributing control of soil channels and interacting control by transfering soil channel parameters. The result of verifying analysis indicates that the built soil channels by this method has such enough real senses that represent characteristics of given soil channels structure preferably.

关 键 词：土壤孔隙可视化 分形 KOCH曲线 广义能量极小值原理 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术]