Paper Title:
Detached Eddy Simulation of the Turbulent Flow in a Stirred Tank
  Abstract

In the present work, detached eddy simulation (DES) of the turbulent flow in an unbaffled stirred tank agitated by a six-pitched-blade turbine was carried out. The sliding mesh (SM) approach was applied to simulate the rotation of the impeller. For comparison, the computations based on the large eddy simulation (LES) model and RANS equations closed with Reynolds stress model (RSM) were also performed. The instantaneous velocity fluctuations, mean velocity and turbulent kinetic energy profiles were analyzed and compared with the laser doppler velocimetry (LDV) results from literature. Results show that DES model can capture the unsteady turbulent flow characteristics accurately. The mean velocity and turbulent kinetic energy profiles by the DES model are in good agreements with the LES results and the LDV data. Besides, the computational cost of DES is only about 80% of LES. By contrast, the results obtained by RSM are not so good. It can be concluded that the DES model can produce as similarly good predictions as LES with less computational cost, and can work as an alternative of the LES model in predicting the hydrodynamics in the stirred tanks.

  Info
Periodical
Advanced Materials Research (Volumes 236-238)
Edited by
Zhong Cao, Yinghe He, Lixian Sun and Xueqiang Cao
Pages
1487-1491
DOI
10.4028/www.scientific.net/AMR.236-238.1487
Citation
F. L. Yang, S. J. Zhou, G. C. Wang, "Detached Eddy Simulation of the Turbulent Flow in a Stirred Tank", Advanced Materials Research, Vols. 236-238, pp. 1487-1491, 2011
Online since
May 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Chuan Bo Ji, Xiao Chuan Lin, Jing She Li
Iron and Steel
Abstract:There are many serious problems are directly associated with the flow pattern in the mold in the continuous casting of steel process. The...
1205
Authors: Lei Shi, Shen Jie Zhou, Feng Ling Yang, Fan Jin Hu
Chapter 4: Fluid Machinery and Engineering
Abstract:Mixing efficiency is an important parameter in the design of many industrial processes in stirred tanks. In this study, CFD technology was...
559
Authors: Gui Chao Wang, Shen Jie Zhou, Feng Ling Yang, Song Ying Chen
Chapter 4: Fluid Machinery and Engineering
Abstract:Particles concentration distribution in a stirred tank with pitched blade turbine was investigated using computational fluid dynamics. The...
696
Authors: Qiang Fu, Shou Qi Yuan, Rong Sheng Zhu
Chapter 2: Applied Mechanics and Mechanical Engineering
Abstract:In order to study the rules of pressure fluctuation and the radial force under different positions in a centrifugal pump with low specific...
935
Authors: Jun Ling Fan, De Yu Luan
Chapter 13: Modeling, Simulation and Emulation
Abstract:Computational fluid dynamics (CFD) method was applied to the study of flow field in the agitation of glycerin fluid with a Rushton impeller...
2375