茶园物理除虫机管道模拟研究

茶园物理除虫机管道模拟研究(选题审批表,任务书,开题报告,中期检查表,论文说明书15100字)
摘  要：针对现在利用化学合成农药防治茶叶病害虫的危害，采用了一个利用风力和少量水的吹风式物理除虫装置，特点是无污染。结合流体力学雷诺时均N-S方程，采用Simple流场求解算法、 湍流模型，利用Fluent软件对该装置的主要部分通风管道进行了数值模拟计算，得出了中亚风机在空载状态下通风管道内部流场特征。包括速度矢量图、压力分布图、以及压力和湍动能的变化。通过数值模拟计算分析知，在考虑原模型各已知条件不变的情况下，得到了较好进风口位置，为通风管道的改进和优化提供了一定的参考价值。     关键词：风力除虫机；通风管道；数值模拟；Fluent软件。

Simulation study on pipeline for tea garden physical deinsectization machine
Abstract: In view of the present utilizing chemical synthesis pesticide on tea pest harm, this design adopted a blowing type physical deinsectization device that use wind and little water. The features no polution.This design combining the fluid mechanics RANS equation of N-S, using Simple algorithm for solving the flow field,  turbulence model, using Fluent software to the main portion of the apparatus of ventilating ducts are numerically simulated calculation of wind machine. This design obtained under no-load condition ventilation pipe interior flow field characteristics, including the velocity vectors, pressure distribution, and the pressure and turbulent kinetic energy change. Through the numerical simulation and analysis of knowledge, in considering the original model of the known condition changeless circumstance falls, obtain better air inlet position, the improvement and optimization of ventilation pipe to provide a certain reference value.
Key words: wind insecticide machine；ventilation pipe；numerical simulation；FLUENT.
 

目    录
摘要………………………………………………………………………………1
关键词……………………………………………………………………………1
1    前言……………………………………………………………………………2
2    茶园风力（物理）除虫研究进展…………………………………………3
3    茶园物理除虫机出风管道与计算流体力学的分析………………………6
3.1    流动模型的建………………………………………………………7
3.1.1  物理模型……………………………………………………7
3.1.2  网格划分……………………………………………………7
3.2  计算方法………………………………………………………………8
3.2.1  质量守恒方程………………………………………………8
3.2.2  动量守恒方程………………………………………………9
3.2.3  能量守恒方程………………………………………………9
3.2.4  湍流控制方程………………………………………………9
3.2.5  边界条件……………………………………………………13
3.2.6  材料设置……………………………………………………13
3.3  模拟结果与数据分析………………………………………………13
3.3.1  气流速度和涡流分析………………………………………13
3.3.2  气体压力湍流分布…………………………………………16
3.3.3  气体轨迹分析………………………………………………17
4  茶园物理除虫机的除虫实验………………………………………………18
4.1  选虫…………………………………………………………………18
4.2  除虫实验……………………………………………………………20
5  结论…………………………………………………………………………23
参考献……………………………………………………………………………23
致谢………………………………………………………………………………24