Large-Eddy Simulation of Turbulent Flow in a Curved Pipe

We use Large-Eddy Simulation (LES) to compute a fully-developed turbulent flow in a curved pipe. The results allow us to study how the curvature influences the mean velocity profile and also various turbulent statistics. We find reasonable agreement with the few experiments that are available. Our simulation also allows a detailed study of secondary motion in the cross section of the pipe which are caused by the centrifugal acceleration due to the pipe curvature. It is known that this secondary motion may consist of one, two, or three circulation cells.

[1]  Hidesato Ito,et al.  Flow in curved pipes. , 1987 .

[2]  R. M. C. So,et al.  Swirling turbulent flow through a curved pipe , 1993 .

[3]  J. Eggels,et al.  Direct and Large Eddy Simulation of Turbulent Flow in a Cylindrical Pipe Geometry , 1994 .

[4]  A. D. Young,et al.  An Introduction to Fluid Mechanics , 1968 .

[5]  P. Bradshaw.  Turbulent secondary flows , 1987 .

[6]  P. Moin,et al.  Model consistency in large eddy simulation of turbulent channel flows , 1988 .

[7]  L. Talbot,et al.  Flow in Curved Pipes , 1983 .

[8]  P. Moin,et al.  A dynamic localization model for large-eddy simulation of turbulent flows , 1995, Journal of Fluid Mechanics.

[9]  R. M. C. So,et al.  Perturbation by and recovery from bend curvature of a fully developed turbulent pipe flow , 1989 .

[10]  Parviz Moin,et al.  The effects of curvature in wall-bounded turbulent flows , 1987, Journal of Fluid Mechanics.

[11]  Dudley Brian Spalding,et al.  Prediction of turbulent flow in curved pipes , 1975, Journal of Fluid Mechanics.

[12]  Hector Iacovides,et al.  Developing Turbulent Flow in a U-Bend of Circular Cross-Section: Measurement and Computation , 1986 .

[13]  M. Adler,et al.  Strömung in gekrümmten Rohren , 1934 .

[14]  M. Germano,et al.  On the effect of torsion on a helical pipe flow , 1982, Journal of Fluid Mechanics.

[15]  K. Horiuti,et al.  A proper velocity scale for modeling subgrid-scale eddy viscosities in large eddy simulation , 1993 .

[16]  R. M. C. So,et al.  Turbulence-driven secondary flows in a curved pipe , 1991 .