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首页> 外文会议>ICCCI 2010;International conference on computer and computational intelligence >Study of Influence on Internal Flow Field in Geometry of Fan-shaped Nozzles with Water Jet Cleaning
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Study of Influence on Internal Flow Field in Geometry of Fan-shaped Nozzles with Water Jet Cleaning

机译：水射流清洗对扇形喷嘴几何形状内流场的影响研究

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Fan-shaped nozzle is an important component of high-pressure water jet cleaning system. The geometric shape affects dynamic properties of highpressure water jet cleaning system most. In this paper three-dimensional mathematical models of internal flow field of fan-shaped nozzles were built by the CFD software. Using the standard k-ε turbulent model, the internal flow fields of different fan-shaped nozzles were simulated by Fluent software and axial velocities were shown. The results show that cone entrance structure facilitates the acceleration of the stream which assures the stream to be accelerated all the time urging moving in the nozzle; the contract angles and length-diameter ration of the fan-shaped nozzle influence the internal flow field more. The optimum values of all these parameters are proved to exist The simulation results provide theoretical basis for the design of fan-shaped nozzles and have some guiding significance to the actual projects.
机译：扇形喷嘴是高压水喷射清洗系统的重要组成部分。几何形状对高压水喷射清洗系统的动态性能影响最大。本文利用CFD软件建立了扇形喷嘴内部流场的三维数学模型。使用标准的k-ε湍流模型，通过Fluent软件模拟了不同扇形喷嘴的内部流场，并显示了轴向速度。结果表明，圆锥形入口结构促进了水流的加速，从而确保了水流一直在推动着喷嘴运动的过程中被加速。扇形喷嘴的收缩角和长径比对内部流场的影响更大。证明了所有这些参数的最优值。仿真结果为扇形喷嘴的设计提供了理论依据，对实际工程具有一定的指导意义。

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