Anomalous diffusion in branched elliptical structure

Diffusion in narrow curved channels with dead-ends as in extracellular space in the biological tissues, e.g., brain, tumors, muscles, etc. is a geometrically induced complex diffusion and is relevant to different kinds of biological, physical, and chemical systems. In this paper, we study the effects of geometry and confinement on the diffusion process in an elliptical comb-like structure and analyze its statistical properties. The ellipse domain whose boundary has the polar equation $\rho \left( \theta \right)=\frac{b}{\sqrt {1-e^{2}\cos^{2}\theta } }$ with $0相似文献   

基于遗传编程的吸附床传热状态预测

脱硝吸附塔是烟气处理系统中的重要环节。塔内的热交换受到多方因素的非线性影响，给准确快速的评估吸附剂换热状态带来巨大挑战。为解决此问题，使用数值模拟与均一介质方法，对一种插管式吸附塔换热进行了模拟与多元遗传编程回归，获得了白盒表达式并验证模型准确性。分析了因变量、遗传编程参数等设定对回归的影响。最终结果表明使用遗传编程的回归效果优异，在工业生产与探究变量物理关系中，具有强大的应用潜力。