SIMULATION INVESTIGATION OF SUBMERGED JET FLOW FROM A STARSHAPED NOZZLE

doi:10.3863/j.issn.1674-5086.2009.01.035

西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (1): 145-148.DOI: 10.3863/j.issn.1674-5086.2009.01.035

• 石油机械工程及其它 • Previous Articles Next Articles

SIMULATION INVESTIGATION OF SUBMERGED JET FLOW FROM A STARSHAPED NOZZLE

WANG Ming-bo¹ YANG Jin-ying²

1.School of Petroleum Engineering,China University of Petroleum,Dongying Shandong 257061,China;2.Center for Bioengineering & Biotechnology,China University of Petroleum,Qingdao Shandong 266555,China

Received:1900-01-01 Revised:1900-01-01 Online:2009-02-20 Published:2009-02-20

Abstract

Abstract:

The Realizable κ-εturbulence model is applied to the simulation of star-shaped nozzle submerged jet flow.Numerical results including the time-averaged velocity distributions are compared with circular nozzle simulation results available.It is found that the exit profile shows significant influence on the flow field when the jet is in its initial stage,after the initial section,the jet formed by the star-shaped nozzle turns to transform into the circular nozzle jet.The axial velocity attenuation on the maximum and minimum diameter planes conforms to those of the flow field issued from the round nozzle when the standoff is larger than 4 times the equivalent diameter of the nozzle,more complicated than the round nozzle when the standoff smaller than 4 times the equivalent diameter of the nozzle.The velocity profiles on the maximum-diameter plane and the minimum-diameter plane show the characteristic of self-similarity when the standoff distance is larger than 4 times the equivalent diameter of the nozzle.The star-shaped nozzle generates the approximately same level of turbulence kinetic energy as the circular nozzle.

Key words: star-shaped nozzle, submerged jet flow, numerical simulation, Realizable κ-εmodel

CLC Number:

TE248

WANG Ming-bo YANG Jin-ying . SIMULATION INVESTIGATION OF SUBMERGED JET FLOW FROM A STARSHAPED NOZZLE[J]. 西南石油大学学报(自然科学版), 2009, 31(1): 145-148.

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SIMULATION INVESTIGATION OF SUBMERGED JET FLOW FROM A STARSHAPED NOZZLE

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