赵万华
- 教授
- Supervisor of Doctorate Candidates
- Supervisor of Master's Candidates
- E-Mail:
- Date of Employment:1986-07-01
- Education Level:With Certificate of Graduation for Doctorate Study
- Professional Title:教授
- Status:Employed
- Alma Mater:西安交通大学
- College:School Of Mechanical Engineering
- Discipline:Mechanical Engineering
- Papers
RESEARCH ON TRANSITIONAL FLOW CHARACTERISTICS OF LABYRINTH-CHANNEL EMITTER
Release Time:2025-04-30 Hits:
- Date:2025-04-30
- Title of Paper:RESEARCH ON TRANSITIONAL FLOW CHARACTERISTICS OF LABYRINTH-CHANNEL EMITTER
- Summary:A physical model for flow characteristics analysis of labyrinth-channel emitter is reconstructed by Reverse Engineering from an injection molded part, and both laminar flow and turbulence models are adopted to simulate the flow state under the condition of low Reynolds numbers. According to the distribution of separation and reattachment points, the onset of transition from laminar to turbulent flow in labyrinth channels occurs at a range of Re=250~300. Furthermore, a visualization system of the flow field inside the labyrinth experiments. The experiment of tracing particles verifies the calculated flow field distribution, and another experiment using dyeing liquor showed the critical Reynolds number characterizing the transition, which is reasonably consistent with numerical simulation results. The critical Reynolds number obtained shows the fact that the flow inside this emitter is turbulent under the pressures of 40~150 kPa.
- Co-author:Zhao Wanhua, Zhang Jun
- Translation or Not:No
- Date of Publication:2009-07-24