A random flow generation (RFG) technique is presented, which can be used for initial/inlet boundary generation in LES (Large-Eddy-Simulations) or particle tracking in LES/RANS (Reynolds-Averaged Navier-Stokes) computations of turbulent flows. The technique is based on previous methods of synthesizing divergence-free vector fields from a sample of Fourier harmonics and allows to generate non-homogeneous anisotropic flow field representing turbulent velocity fluctuations. It was validated on the cases of boundary layer and flat plate flows. Applications of the technique to LES and particle tracking are considered.

Issue Section:
Technical Papers
Keywords:
turbulence, flow simulation, Navier-Stokes equations, boundary layer turbulence, Fourier analysis
Topics:
Flow (Dynamics), Turbulence, Reynolds-averaged Navier–Stokes equations, Large eddy simulation, Particle dynamics, Anisotropy, Wakes, Modeling
1.
Ravikanth, V., and Pletcher, R., 2000, AIAA Paper (2000-0542).
2.
Akselvoll, K., and Moin, P., 1995, Technical Report TF-63, Stanford University.
3.
Lund
,
T.
,
1998
, “
Generation of Turbulent Inflow Data for Spatially-Developing Boundary Layer Simulations
,”
J. Comput. Phys.
,
140
, p.
233
233
.
4.
Lee
,
S.
,
Lele
,
S.
, and
Moin
,
P.
,
1992
, “
Simulation of Spatially Evolving Turbulence and the Applicability of Taylor’s Hypothesis in Compressible Flow
,”
Phys. Fluids A
,
4
, p.
1521
1521
.
5.
Zhou, O., and Leschziner, M., Sept. 1991, “A Time-Correlated Stochastic Model For Particle Dispersion in Anisotropic Turbulence,” 8-th Turbulent Shear Flows Symp., Munich.
6.
Zhou, Q., and Leschziner, M., 1996, “Modelling Particle Dispersion in Turbulent Recirculating Flow with an Anisotropy-Resolving Scheme,” Technical Report TFD/96/07, UMIST.
7.
Li
,
A.
,
Ahmadi
,
G.
,
Bayer
,
R.
, and
Gaynes
,
M.
,
1994
, “
Aerosol Particle Deposition in an Obstructed Turbulent Duct Flow
,”
J. Aerosol. Sci.
25
, No.
1
, p.
91
91
.
8.
Bechara
,
W.
,
Bailly
,
C.
, and
Lafon
,
P.
,
1994
, “
Stochastic Approach to Noise Modeling for Free Turbulent Flows
,”
AIAA J.
,
32
,
No. 3
No. 3
.
9.
Fung
,
J.
,
Hunt
,
J.
,
Malik
,
N.
, and
Perkins
,
R.
,
1992
, “
Kinematic Simulation of Homogeneous Turbulence by Unsteady Random Fourier Modes
,”
J. Fluid Mech.
,
236
, p.
281
281
.
10.
Kraichnan
,
R.
,
1970
, “
Diffusion by a Random Velocity Field
,”
Phys. Fluids
,
11
, p.
22
22
.
11.
Ferziger, J., 1983, “Higher-level Simulations of Turbulent Flows,” J. Essers, ed., Computational Methods for Turbulent Transsonic and Viscous Flows, pp. 93–183, Hemisphere, Springer-Verlag.
12.
Maxey
,
M.
,
1987
, “
The Gravitational Settling of Aerosol Particles in Homogeneous Turbulence and Random Flow Fields
,”
J. Fluid Mech.
,
174
, p.
441
441
.
13.
Shi, S., Smirnov, A., and Celik, I., 2000, “Large-Eddy Simulations of Turbulent Wake Flows,” Twenty-Third Symposium on Naval Hydrodynamics, Val de Reuil, France, pp. 203–209.
14.
Smirnov, A., Shi, S., and Celik, I., 2000, “Random Flow Simulations with a Bubble Dynamics Model,” in ASME Fluids Engineering Division Summer Meeting, No. 11215 in FEDSM2000, Boston, MA.
15.
Spain, B., 1965, Tensor Calculus, Oliver and Boyd.
16.
Hinze, J., 1975, Turbulence, 2nd edition, McGraw-Hill, New York.
17.
Klebanoff, P., 1954, NACA Tech. Notes, p. 3133.
18.
Speziale
,
C.
,
1998
, “
Turbulence Modeling for Time-Dependent RANS and VLES: a Review
,”
AIAA J.
,
36
, No.
2
, p.
173
173
.
19.
Ramaprian, B., Patel, V., and Sastry, M., 1981, “Turbulent Wake Development Behind Streamlined Bodies,” Technical Report IIHR Report No. 231, Iowa Institute of Hydraulic Research, The University of Iowa.
20.
Nakayama
,
A.
, and
Liu
,
B.
,
1990
, “
The Turbulent Near Wake of a Flat Plate at Low Reynolds Number
,”
J. Fluid Mech.
,
217
, p.
93
93
.
21.
Larreteguy, A., 1999, “Ship-Wake Simulations,” Private Communication.
22.
Elghobashi
,
S.
,
1994
, “
On Predicting Particle-Laden Turbulent Flow
,”
Appl. Sci. Res.
,
52
, p.
309
309
.
23.
Crowe, C.: 1998, “An Assessment of Multiphase Flow Models for Industrial Applications,” Proceeding of FEDSM’98, Vol. FEDSM-5093, Washington, DC.
24.
Crowe, C., Sommerfeld, M., and Tsuji, Y., 1998, Multiphase Flows with Droplets and Particles, CRC Press.
25.
Piomelli
,
U.
,
1999
, “
Large-Eddy Simulation: Achievements and Challenges
,”
Prog. Aeronaut. Sci.
,
35
, p.
335
335
.
26.
Carrica
,
P.
,
Bonetto
,
D.
,
Drew
,
D.
, and
Lahey
,
R.
,
1998
, “
The Interaction of Background Ocean Air Bubble With a Surface Ship
,”
Int. J. Numer. Methods Fluids
,
28
, p.
571
571
.
27.
Celik, I., Smirnov, A., and Smith, J. 1999, “Appropriate Initial and Boundary Conditions for LES of a Ship Wake,” 3rd ASME/JSME Joint Fluids Engineering Conference, Vol. FEDSM99-7851, San Francisco, CA.
Copyright © 2001
 by ASME
You do not currently have access to this content.