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TURBULENT FLOW CHARACTERISTICS OF CHANNEL FLOW USING LARGE EDDY SIMULATION WITH WALL-FUNCTION(FDS CODE)
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 Title & Authors
TURBULENT FLOW CHARACTERISTICS OF CHANNEL FLOW USING LARGE EDDY SIMULATION WITH WALL-FUNCTION(FDS CODE)
Jang, Yong-Jun; Ryu, Ji-Min; Ko, Han Seo; Park, Sung-Huk; Koo, Dong-Hoe;
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 Abstract
The turbulent flow characteristics in the channel flow are investigated using large eddy simulation(LES) of FDS code, built in NIST(USA), in which the near-wall flow is solved by Werner-Wengle wall function. The periodic flow condition is applied in streamwise direction to get the fully developed turbulent flow and symmetric condition is applied in lateral direction. The height of the channel is H=1m, and the length of the channel is 6H, and the lateral length is H. The total grid is and is kept above 11 to fulfill the near-wall flow requirement. The Smagorinsky model is used to solve the sub-grid scale stress. Smagorinsky constant is 0.2(default in FDS). Three cases of Reynolds number(10,700, 26,000, 49,000.), based on the channel height, are analyzed. The simulated results are compared with direct numerical simulation(DNS) and particle image velocimetry(PIV) experimental data. The linear low-Re eddy viscosity model of Launder & Sharma and non-linear low-Re eddy viscosity model of Abe-Jang-Leschziner are utilized to compare the results with LES of FDS. Reynolds normal stresses, Reynolds shear stresses, turbulent kinetic energys and mean velocity flows are well compared with DNS and PIV data.
 Keywords
Large Eddy Simulation;FDS(Fire Dynamics Simulator);Wall Function;Turbulent Flow;Eddy Viscosity;
 Language
Korean
 Cited by
 References
1.
2015, Kim, J.-H., "The study for validity and basic-plan of train, disaster measures, aerodynamic characteristics for GTX," KRRI-STUDY 2015-G-08-01(Korea Railroad Research Institute).

2.
1994, Fletcher, D.-F., Kent, J.-H. and Apte, V.-B., "Numerical Simulations of Smoke Movement from a pool fire in a ventilated tunnel," Fire Safety Journal, Vol.23, pp.305-325. crossref(new window)

3.
2011, Wang, B., "Comparative Research on Fluent and FDS's Numerical Simulation of Smoke Spread in Subway Platform Fire," Procedia Engineering, Vol.26, pp.1065-1075. crossref(new window)

4.
2010, Huang, Y.-D. and Gao, W., "A Numerical Study of The Train-Induced Unsteady Airflow in a Subway Tunnel with Natural Ventilation Ducts Using The Dynamic Layering Method," Journal of Hydrodynamics, Vol.22, No.2, pp.164-172. crossref(new window)

5.
2002, Jang, Y.-J., Leschziner, M.A., Abe, K. and Temmerman, L., "Investigation of anisotropy-resolving turbulence models by reference to highly-resolved LES data for separated flows," Flow, Turbulence and Combustion, Vol.69, pp.161-203. crossref(new window)

6.
2008, Jang, Y.-J., "An Investigation of Higher-Order Closures in The Computation of the Flow Around a Generic Car," Journal of Mechanical Science and Technology, Vol.22, pp.1019-1029. crossref(new window)

7.
2005, Deioan, A., Jang, Y.-J. and Leschziner, M.A., "Comparitive LES and Unsteady RANS Computations for a Periodically-Perturbed Separated Flow Over a Backward-Facing Step," Journal of Fluids Engineering (ASME), Vol.127, September, pp.872-878. crossref(new window)

8.
2003, Temmerman, L., Leschziner, M.A., Mellon, C.P. and Frohlich, J., "Investigation of wall-function approximation and subgrid-scale models in large eddy simulation of separated flow in a channel with streamwise periodic constrictions," International Journal of Heat and Fluid Flow, Vol.24, pp.157-180. crossref(new window)

9.
2013, McGrattan, K., McDermontt, R., Weinschnk, C. and Overholt, K., "Fire Dynamics Simulator(Version 6) User's Guide," NIST.

10.
2008, Park, W.-C. and Trouve, A., "Numerical Simulation of Vertical Wall Fires," Journal of Korean Institute Fire Science & Engineering, Vol.22, No.3, pp.181-187.

11.
2004, Gao, P.-Z., Liu, S.-L., Chow, W.-K. and Fong, N.-K., "Large Eddy Simulation for Studying Tunnel Smoke Ventilation," Tunneling and Underground Space Technology, Vol.19, pp.577-586. crossref(new window)

12.
2009, Jang, Y.-J., Lee, C.-H., Kim, H.-B. and Jung, W.-S., "The Examination of Accuracy of Fire-Driven Flow Simulation in Tunnel Equipped with Ventilation," Journal of Computational Fluids Engineering, Vol.14, No.3, pp.109-116.

13.
2013, Jang, Y.-J., Ryu, J.-M. and Park, D.-K., "Large Eddy Simulation of Ordinary & Emergency Ventilation Flow in Underground Subway Station," Journal of Computational Fluids Engineering, Vol.18, No.3, pp.72-78.

14.
1999, Moser, R.D., Kim, J. and Mansour, N.N., "Direct numerical simulation of turbulent channel flow up to $R{\tau}$=590," Physics of Fluids, Vol.11, No.4, pp.943-945. crossref(new window)

15.
2010, Jang, Y.-J., Jung, W.-S. and Park, I.-S., "Measurement of Flow Distribution in A Straight Duct of Railway Tunnel Mock-up Using PIV and Comparison with Numerical Simulation," Journal of Computational Fluids Engineering, Vol.15, No.3, pp.39-45.

16.
1991, Werner, H. and Wengle, H., "Large-eddy simulation of turbulent flow over and around a cube in a plate channel," 8th Symposium on Turbulent Shear Flows, pp.155-168.

17.
1974, Launder, B.E. and Sharma, B.I., "Application of the energy-dissipation model of turbulence to the calculation of flow near a spinning disc," Lett. Heat and Mass Transfer, Vol.1, pp.131-138.

18.
2003, Abe, K., Jang, Y.-J. and Leschziner, M.A., "An Investigation of wall-anisotropy expressions and length-scale equations for non-linear eddy-viscosity models," International Journal of Heat and Fluid Flow, Vol.24, pp.181-198. crossref(new window)

19.
1994a, Lien, F.S. and Leschziner, M.A., "A general non-orthogonal collocated finite algorithm for turbulent flow at all speeds incorporating second-moment turbulencetransport closure, Part 1: Computational implementation," Comput. Methods Appl. Mech. Engr., Vol.114, pp.123-148. crossref(new window)

20.
1994b, Lien, F.S. and Leschziner, M.A., "Upstream monotonic interpolation for scalar transport with application to complex turbulent flows," Int. J. of Numerical Methods in Fluids, Vol.19, pp.527-548. crossref(new window)