时域有限差分法模拟微生物生长曲线  

Finite Difference Time Domain Simulation Curves of the Microbe Growth

作　　者：杨改强[1] 霍丽娟[1] 丁庆伟[1] 王婷[1] 钱天伟[1] 

机构地区：[1]太原科技大学环境科学研究所,太原030024

出　　处：《太原科技大学学报》2009年第4期355-358,共4页Journal of Taiyuan University of Science and Technology

基　　金：太原市科技局科技明星专项资助;山西省高校科技开发项目(20081028)

摘　　要：研究微生物生长是研究污水生物处理的基础,微生物生长曲线又能体现出微生物在不同的生长阶段的特征。利用计算机模拟微生物生长曲线的形态,将有利于对各种复杂环境下微生物的生长进行预测,以便为处理工艺的改进的控制提供参考。文章将增殖曲线和消亡曲线同时应用于微生物的生长曲线,推导出形式简单的控制方程。并运用时域有限差分法,将控制方程转化为可用计算机实现的形式。将程序模拟结果与实验结果相比对,证明时域有限差分法能够较好地预测微生物的生长状况。经过几种差分方法的比较,认为向前差分法的方程更简单,编程更容易,预测的结果也与实际值较接近。Researching biological sewage treatment is based on researching microbe growth, and the microbe growth curve incarnates characteristics of microbe in each phase. By simulation of the microbe growth curve, microbe growth in complicated circumstances is likely to be simulated,and to supply references to improvement and controlment of the treatment technics. A concise microbe growth curve equation is deduced by combining multiplication curve with extinction curve. Based on the Finite Difference Time Domain, the computer simulation came true. By comparing FDTD effects with each other, it is found that forward FDTD has more facility and gains an approximation close to actual value.

关 键 词：时域有限差分方法(FDTD) 微生物 生长曲线 计算机程序 

分 类 号：Q935[生物学—微生物学]