JOURNAL OF TEXTILE RESEARCH ›› 2008, Vol. 29 ›› Issue (7): 100-103.

• 机械与器材 • Previous Articles     Next Articles

Simulation analysis of the effect of hydroentangling nozzle geometry on the breakup length of water-jets

WANG Caihua   

  1. College of Material and Textile;Zhejiang Sci?-Tech University;Hangzhou;Zhejiang 310018;China
  • Received:2007-07-13 Revised:2007-10-16 Online:2008-07-15 Published:2008-07-15

Abstract: Three styles of hydroentangling nozzles are designed depending on the requirement in hydroentangling process,that is,cone-capillary nozzle,streamline nozzle and capillary-cone nozzle.A CFD technique is employed to simulate the formation of the water-jets discharged from these nozzles,and the effect of nozzle geometry on water-jet breakup length is analyzed depending on the simulation result.The experiments indicate that the cone-capillary nozzle geometry makes the water jet discharged from the nozzle fogged easily on the water jet surface,and the breakup length of the water jet is shorter;the streamline nozzle geometry makes the disturbance of the nozzle wall to the water flow inside this nozzle decreased,and the breakup length of the water jet is longer;and the capillary-cone nozzle geometry is optimum for water jet to keep collimated and coherent,and the breakup length of the water jet is the longest.

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