吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (01): 86-90.doi: 10.13229/j.cnki.jdxbgxb201401015

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Calculation method of outlet pressure of open-type hydrodynamic retarder

MA Wen-xing1, SONG Jian-jun1, LIU Chun-bao1, HU Jing1, CHU Ya-xu2   

  1. 1. College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China;
    2. College of Transportation and Civil Engineering, Beihua University, Jilin 132021, China
  • Received:2012-11-19 Online:2014-01-01 Published:2014-01-01

Abstract:

In order to determine the outlet pressure of hydrodynamic retarder at the early design stage and shorten the design cycle, the internal flow field of hydrodynamic retarder was calculated in CFD numerical simulation software according to velocity-inlet boundary and outflow boundary conditions. The outlet pressure distribution calculated from the flow field was solved by area-weighted average algorithm. Then the outlet pressure values under different rotor speeds and charging ratios were obtained. The results show that the outlet pressure of the hydrodynamic retarder is a quadratic function of the rotor speed and a linear function of the charging ratio. This research obtained the mathematical expression that describes how the outlet pressure response to variations of the rotor speed and charging ratio, which provides the basis for the control system design of a hydrodynamic retarder.

Key words: fluid transmission and control, hydrodynamic retarder, computational fluid dynamics, outlet pressure

CLC Number: 

  • TH137.331

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