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新型内藏式文丘里管空化发生器空化特性

Cavitation Characteristics of a New Type of Built-in Venturi Tube Cavitation Generator
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摘要 为解决工业实际应用中串联文丘里管只有单级发挥作用,而并联文丘里管空间占用大且空化性能不佳的问题。提出了一种新型内藏式文丘里管,并采用数值模拟的方法针对该结构的空化特性进行研究,研究了入口压力、内部小型文丘里管入口角度、出口角度、喉径与管径比、喉径与喉长比等参数对其空化性能的影响,研究结果表明:随着入口压力的升高,管内空化发生面积逐渐增大,当压力达到0.7 MPa时,文丘里管内的空化性能达到最大;通过对内部小型文丘里管的不同结构参数研究确定,当入口角度为40°,出口角度为18°,喉径与管径比为0.6,喉径与喉长比为2时,新型内藏式文丘里管的空化性能达到最大。该研究可为新型内藏式文丘里管设计及其应用提供一定参考。 In order to solve the problem that the series Venturi tube only plays a role in a single stage,while the parallel Venturi tube occupies a large space and the cavitation performance is poor in industrial application.A new type of built-in Venturi tube was proposed and numerical simulation was used to study the cavitation characteristics of the structure.The effects of inlet pressure,inlet angle,outlet angle,throat diameter to pipe diameter ratio,throat diameter to throat length ratio and other parameters on the cavitation performance were studied.The research results indicate that as the inlet pressure increases,the area of cavitation inside the tube gradually increases.When the pressure reaches 0.7 MPa,the cavitation performance inside the Venturi tube reaches its maximum.By studying the different structural parameters of the internal small Venturi tube,it was determined that the cavitation performance of the new type of built-in Venturi tube reaches its maximum when the inlet angle is 40°,the outlet angle is 18°,the ratio of throat diameter to pipe diameter is 0.6,and the ratio of throat diameter to throat length is 2.This study can provide some reference for the design and application of a new type of built-in Venturi tube.
作者 李美求 彭翰林 LI Mei-qiu;PENG Han-lin(School of Mechanical Engineering,Yangtze University,Jingzhou 434020,China)
出处 《科学技术与工程》 北大核心 2024年第21期9061-9068,共8页 Science Technology and Engineering
基金 国家科技重大专项(2016ZX05038-001-LH002)。
关键词 内藏式 文丘里管 空化特性 数值模拟 built-in Venturi tube cavitation characteristic numerical simulation
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