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• 计算机图形学与虚拟现实 • 上一篇    下一篇

基于物理的雾凇生长模拟算法

  

  1. 1. 北京林业大学信息学院，北京 100083；
    2. 北京林业大学艺术设计学院，北京 100083
  • 出版日期:2020-02-29 发布日期:2020-03-11
  • 基金资助:
    北京市社会科学基金项目(17YTC030)；北京林业大学建设世界一流学科和特色发展引导专项(2019XKJS0310)；中央高校基本科研业务费
    专项(2015ZCQ-XX，2017JC10)；国家自然科学基金项目(61402038，61502109)；北京林业大学北京市级大学生科研创新训练项目
    (S201510022069)；广东自然科学基金项目(2016A030310342)

Physics-based algorithm for natural rime growth simulation

  1. 1. School of Information Science & Technology, Beijing Forestry University, Beijing 100083, China;
    2. College of Arts and Design, Beijing Forestry University, Beijing 100083, China
  • Online:2020-02-29 Published:2020-03-11

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摘要： 为了实现冬季中常见的2 种雾凇——软凇和硬凇的模拟，通过研究2 种雾凇在不
同风速、温度等生长环境下的形态，提出了一种基于物理的雾凇生长动态模拟算法。采用热力
学原理建立的覆冰模型计算雾凇的长度，并结合扩散限制凝聚方法，以每个雾凇生长点为凝聚
核对软凇的形态进行模拟，利用分节计算生长终点方法来模拟硬凇的形态。同时引入柏林噪声
函数，通过构造随机噪声函数、平滑函数等方法来实现风场的模拟。实验结果表明，该方法能
够真实、有效地模拟自然界中的软凇和硬凇。

关键词: 物理方法, 软凇, 硬凇, 生长模拟, 扩散限制凝聚

Abstract: In order to simulate two main kinds of rime in winter, the soft rime and the hard rime, an
algorithm for rime growth simulation based on physics is proposed in this paper by analyzing the
morphology of two kinds of rime under different wind speeds and temperatures. The algorithm
calculates the length of rime by using the icing conductor model based on the principle of
thermodynamics. After that, the method of diffusion limited aggregation is introduced to our
algorithm to simulate the morphology of the soft rime with each growing point of the rime as a
condensation nuclear, and a segmentation method is for the simulation of the needle-like rime’s
morphology; Perlin noise function is used to simulate wind field by constructing stochastic noise
function and smoothing function. The experimental results show that this method can simulate the
soft rime and the hard rime in the nature realistically and efficiently.

Key words: physics approach, soft rime, hard rime, growth simulation, diffusion limited aggregation