Numerical modelling of swirl flow induced by a three-lobed helical pipe

被引:31
作者
Fokeer, S. [2 ]
Lowndes, I. S. [1 ]
Hargreaves, D. M. [1 ]
机构
[1] Univ Nottingham, Proc & Environm Engn Res Div, Nottingham NG7 2RD, England
[2] Univ Loughborough, Dept Aeronaut & Automot Engn, Loughborough LE11 3TU, Leics, England
关键词
Computational fluid dynamics; Swirl flow; Laser Doppler anemometry;
D O I
10.1016/j.cep.2010.04.004
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Increasingly in the process industries, the introduction of swirl flow upstream of bends is being used in particle-laden flow to reduce wear. This paper describes a computational fluid dynamics model of the swirl flow that is induced in an airflow passing through a horizontally mounted three-lobed helical pipe. It then goes on to discuss the results of the model verification and validation studies performed. The numerical model was used to further investigate the flows observed within and downstream of both a straight circular pipe and a three-lobed helical pipe that were previously studied during experiments conducted on a laboratory rig fora range of Reynolds numbers. A comparative analysis of the experimental and model predicted data concluded that the simulation results replicated well the experimental results for the control pipe. For the helical pipe, axial velocities were in reasonable agreement with experimental measurements across the range of Reynolds numbers studied. However, tangential velocities were under-predicted by an average of 35% in comparison to the experimental results. As a result, swirl intensity values were also under-predicted, but the values of the computed swirl decay rates were in agreement with those observed during the experiments. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:536 / 546
页数:11
相关论文
共 21 条
[1]  
[Anonymous], 1998, ASTRONAUTICS AIAA GU
[2]  
*ANSYS INC, 2006, FLUENT VERS 6 2
[3]   Design and optimization of swirl pipe geometry for particle-laden liquids [J].
Ariyaratne, C. ;
Jones, T. F. .
AICHE JOURNAL, 2007, 53 (04) :757-768
[4]  
Casey M., 2000, ERCOFTAC Special Interest Group on Quality and Trust in Industrial CFD-Best Practice Guidelines
[5]   Reynolds-Stress Model for Eulerian multiphase [J].
Cokljat, D ;
Slack, M ;
Vasquez, SA ;
Bakker, A ;
Montante, G .
PROGRESS IN COMPUTATIONAL FLUID DYNAMICS, 2006, 6 (1-3) :168-178
[6]   An experimental investigation of pneumatic swirl flow induced by a three lobed helical pipe [J].
Fokeer, S. ;
Lowndes, I. ;
Kingman, S. .
INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 2009, 30 (02) :369-379
[7]   Verification and validation of CFD models and dynamic similarity for fluidized beds [J].
Grace, JR ;
Taghipour, F .
POWDER TECHNOLOGY, 2004, 139 (02) :99-110
[8]  
HOGG S, 1989, AIAA J, V27
[9]  
HOSSAIN A, 2004, 15 AUSTR FLUID MECH
[10]   EXPERIMENTAL-STUDY OF TURBULENT SWIRLING FLOW IN A STRAIGHT PIPE [J].
KITOH, O .
JOURNAL OF FLUID MECHANICS, 1991, 225 :445-479