RESEARCH ON TRANSITIONAL FLOW CHARACTERISTICS OF LABYRINTHCHANNEL EMITTER
作者： Wanhua Zhao , Jun Zhang , Yiping Tang , Zhengying Wei , Bingheng Lu
DOI: 10.1007/978-1-4419-0211-5_11
关键词: Laminar flow 、 Hele-Shaw flow 、 Turbulence 、 Open-channel flow 、 Simulation 、 Flow separation 、 Mechanics 、 Taylor–Couette flow 、 Reynolds number 、 Laminar sublayer 、 Materials science
摘要: A physical model for flow characteristics analysis of labyrinth-channel emitter is reconstructed by Reverse Engineering from an injection molded part, and both laminar turbulence models are adopted to simulate the state under condition low Reynolds numbers. According distribution separation reattachment points, onset transition turbulent in labyrinth channels occurs at a range Re=250~300. Furthermore, visualization system field inside experiments. The experiment tracing particles verifies calculated distribution, another using dyeing liquor showed critical number characterizing transition, which reasonably consistent with numerical simulation results. obtained shows fact that this pressures 40~150 kPa.
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