排灌机械工程学报2011，Vol.29Issue(5)：441-445,5.DOI:10.3969/j.issn.1674-8530.2011.05.015
射流混药装置二维和三维流场对比分析
Contrast and analysis between 2D and 3D flow field of jet-mixing apparatus
摘要
Abstract
Aimed at investigating the design method and test method of jet-mixing apparatus, numerical simulation and experiment research were both used to investigate the internal flow field of jet-mixing apparatus. In the numerical simulation,3D model of jet mixing apparatus were established. With no consideration of the internal flow field in the near suction pipe, 2D axisymmetric model was also established,and then numerical simulation scheme for both 2D axisymmetric model and 3D model flow interior field were set up. Numerical investigation for their interior flow field were performed with CFD software Fluent. It is found that compare to 3D model,the 2D axisymmetric model can save 64% CPU time for the same case. In the experiment research, mixing test bench was constructed, and performance parameters of jet-mixing apparatus were recorded. The experimental data were used to validate the numerical data. Results show that the simulated results and experiment results agree well with each other. The average relative deviation was 4. 14% ,and maximum relative deviation was 7. 41% for 2D axisymmetric model. The average relative deviation was 3. 41% and maximum relative deviation was 5. 13% for 3D model. The established models can be used in engineering calculations.关键词
混药装置/二维轴对称模型/三维流场/数值计算/对比分析Key words
mixing apparatus/2D axisymmetric model/3D flow field/numerical calculation/contrast analysis分类
农业科技引用本文复制引用
邱白晶,徐溪超..射流混药装置二维和三维流场对比分析[J].排灌机械工程学报,2011,29(5):441-445,5.基金项目
国家863计划项目(2008AA100905) （2008AA100905）
江苏省属高校自然科学重大基础研究项日(10KJA470007) （10KJA470007）
