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Numerical Simulation of Rotating Spray Tube with Low Speed
  
DOI：10.11980/j.issn.0254-508X.2011.04.002
Key Words:Realizable κ-ε  spray  PIV
Author NameAffiliation
曾劲松 1.华南理工大学制浆造纸工程国家重点实验室，广东广州，510640；2.广东省造纸技术与装备公共实验室，广东广州，510640 
陈克复 1.华南理工大学制浆造纸工程国家重点实验室，广东广州，510640；2.广东省造纸技术与装备公共实验室，广东广州，510640 
李 军 1.华南理工大学制浆造纸工程国家重点实验室，广东广州，510640；2.广东省造纸技术与装备公共实验室，广东广州，510640 
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Abstract:Based on Realizable κ-ε turbulent model and MRF technique in Fluent, the two kinds of rotary spray tube such as straight and spindle ones were simulated under different forward and reverse rotating velocities, and the core velocities of each outlet were collected and analyzed. Then PIV system was used to validate the model. The results showed that the outflow velocity difference of the straight-type spray line is the smallest when the angular velocity is about 10 r/min with the reverse rotation. While for the spindle spray line, the outflow velocity difference is smallest when the angular velocity is about 50 r/min with the forward rotation. The sprays of rotary spray tube under low rotation speed can be considered as the constant velocity sprays in these two conditions. The numerical simulation results agreed with the PIV experiment data. So both Realizable κ-ε turbulent model and MRF technique are reliable and the calculated results are correct.
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