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基于空化模型的文丘里施肥器内部流动分析

作  者:
李浩;黄修桥;吕谋超;韩启彪;孙浩;段福义
单  位:
江苏大学国家水泵及系统工程技术研究中心;中国农业科学院农田灌溉研究所/河南省节水农业重点试验室
关键词:
文丘里施肥器;数值模拟;空化模型;混合模型;混合过程
摘  要:
为了研究文丘里施肥器的水力性能和内部介质混合规律,以试验和数值模拟相结合的方法,基于混合模型和空化模型,利用Ansys Fluent商业软件对文丘里施肥器在不同工况下进行三维定常数值模拟,并设置对比试验。结果表明:考虑空化模型的数值模拟结果与试验结果基本相符,表明采用空化模型可以更好地预测文丘里施肥器的水力性能。另外,混合室和喉管是能量损失的主要发生区域,肥液和工作液体的混合主要发生在扩散段。
译  名:
Analysis of Internal Flow of Venturi Injector Based on Cativation Model
作  者:
LI Hao;HUANG Xiu-qiao;Lü Mou-chao;HAN Qi-biao;SUN Hao;DUAN Fu-yi;Henan Key Labatory of Water-saving Agriculture,Farmland Irrigation Research Institute,Chinese Academy of Agricultural Sciences;National Research Center of Pumps,Jiangsu University;
关键词:
Venturi injector;;numerical simulation;;cavitation model;;mixture model;;mixing process
摘  要:
In order to study the hydraulic performance and mixing process of venturi injector,through a combined method of experiment and numerical simulation,an unsteady numerical simulation based on the mixture model and the cavitation model and contrast experiments were carried out under different operating conditions by using Ansys-Fluent software.The results show that the numerical simulation considering cavitation model is basically consistent with the experimental results,which indicates that the calculation considering the cavitation model can better predict the hydraulic performance of the venturi injector.In addition,it is found that the mixing chamber and throat of the venturi injector are the main areas of energy loss.The mixing of fertilizer solution and working fluid occurs mainly in the diffusion section.

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