Browse > Article
http://dx.doi.org/10.3795/KSME-B.2003.27.9.1282

Simultaneous Analysis of Concentration and Flow Fields in A Stirred Tank Using Large Eddy Simulation  

Yoon, Hyun-Sik (부산대학교 첨단조선공학센터)
Chun, Ho-Hwan (부산대학교 첨단조선공학센터)
Ha, Man-Yeong (부산대학교 공과대학 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.27, no.9, 2003 , pp. 1282-1289 More about this Journal
Abstract
Transport of a scalar quantity, such as chemical concentration or temperature, is important in many engineering applications and environmental flows. Here we report on results obtained from the large eddy simulations of flow and concentration fields inside the tank performed using a spectral multi-domain technique. The computations were driven by specifying the impeller-induced flow at the blade tip radius (Yoon et al.). This study focused on the concentration development at different molecular diffusivities in a stirred tank operated under turbulent conditions. The main objective of the work presented here is to study the large-scale mixing structure at different molecular diffusivities in a stirred tank by using the large eddy simulation. The time sequence of concentration and flow fields shows the flow dependency of the concentration development. The presence of spatial inhomogenieties is detailed by observing the time variation oflocal concentration at different positions.
Keywords
Stirred Tank; Mixing; Turbulence; Large Eddy Simulation; Scalar Transport;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Van;t Riet, K. and Smith, J, M., 1975, 'The trailing vortex system produced by Rushton turbine agitators,' Chem. Engng Sci, Vol. 30, pp. 1093-1105   DOI   ScienceOn
2 Yoon, H.S., Hill, D. F., Adrian, R. J., Balachandar, S., Ha, M.Y. and Kar, K., 2003, 'Scaling of flow in a stirred tank with Rushton turbines; Part I - Mean flow and the jet and tip vortex components,' Submitted to AICHE J
3 Yoon, H.S., 2003, 'Large eddy simulation of turbulent flow and scalar mixing in a stirred tank,' Ph.D. thesis, Pusan National University, South Korea
4 Akselvoll, K. and Moin, P., 1996, 'Large-eddy simulation of turbulent confined coannualar jets,' J. Fluid Mech., 315, pp. 5387-411   DOI   ScienceOn
5 Germano, M., Piomelli, U., Moin, P. and Cabot, W.H., 1991, 'A dynamic subgrid-scale eddy viscosity model,' Phys. Fluids, A3, No. 3, pp. 1760-1765   DOI
6 Sharp, K. V., Kim, K. S. and Adrian, R. J., 1998, 'A study of vorticity and dissipation around a Rushton turbine using particle image velocimetry,' Proc. 9th Int'l Symp. Appications Lasers to Fluid Mechanics, Lisbon, July 13-16, pp. 14.1.1-10
7 Kim, K. C., Jeong, E. H., Kim, S. K. and Adrian, R. J., 2001, 'A study on the turbulent mixing characteristics in a Rushton turbine reactor by PIV and PLIF,' 4th Int. Symp. on PIV, Germany, pp 1-12
8 Yoon, H. S., Balachandar, S., Ha, M. Y. and Kar, K., 2002, 'Large Eddy Simulation of Flow in a Stirred Tank,' ASME J. of Fluids Engineering. Vol. 125, pp. 486-499   DOI   ScienceOn
9 Lane, G. L., Schwarz, M. P. and Evans, G. M., 2002, 'Predicting gas-liquid flow in a mechanically stirred tank,' Appl. Math. Modelling, Vol. 26, pp. 223-235   DOI   ScienceOn
10 Brucato, A., Ciofalo, M., Grisafi, F. and Tocco, R., 2000, 'On the simulation of stirred tank reactors via computational fluid dynamics,' Chem. Engng Sci, Vol. 55, pp. 291-302   DOI   ScienceOn
11 Yoon, H.S., Sharp, K.V., Hill, D. F., Adrian, R. J., Balachandar, S., Ha, M.Y. and Kar, K., 2001, 'Integrated Experimental and Computational Approach to Simulation of Flow in a Stirred Tank,' Chem. Engng Sci., Vol. 56, pp. 6635-6649   DOI   ScienceOn
12 Distelhoff, M. F. W. and Marquis, A. J., 1998, 'An Lif line scan system for the measuremeant of scalar concentration in a continuously operated stirred tank,' Exp. Fluids, Vol. 25, pp. 77-88   DOI
13 Guillard, F., Tragardh, C. and Fuchs, L., 2000, ' A study of turbulent mixing in a turbine-agitated tank using a fluorescene technique,' Exp. Fluids, Vol. 28, pp. 225-235   DOI