Numerical investigation of the effect of the Rushton type turbine design factors on agitated tank flow characteristics

Date

2008-08-01

Author

Yapici, Kerim
Karasözen, Bülent
Schaefer, Michael
Uludağ, Yusuf

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

158
views

0
downloads

The turbulent flow field in a mixing tank generated by the six-blade Rushton turbine impeller is predicted by using computational fluid dynamics. The governing differential equations of the fluid flow are approximated by an algebraic set of equations through a finite volume method, while large eddy simulation is employed to handle the effects originating from the turbulence. The relative motion between the rotating impeller and the stationary baffle is considered by clicking mesh method. The effects of impeller clearance and disc thickness on the power number are determined and it is found that the power number decreases with decreasing clearance and increasing disc thickness. The results are comparable with those of well-established measurement techniques in terms of time-averaged velocity field, turbulent kinetic energy, dissipation rate, and power number.

Subject Keywords

Agitated tank, Rushton turbine, Computational fluid dynamics, Finite volume method, Large eddy simulation

URI

https://hdl.handle.net/11511/31616

Journal

CHEMICAL ENGINEERING AND PROCESSING

DOI

https://doi.org/10.1016/j.cep.2007.05.002

Collections

Graduate School of Applied Mathematics, Article

Suggestions

OpenMETU
Core

3 D time accurate CFD simulations of wind turbine rotor flow fields Tonkal, Ozan Çağrı; Pehlivan, Sercan; Sezer Uzol, Nilay; İşler, Veysi (American Institute of Aeronautics and Astronautics Inc.(AIAA); 2006-01-12) This paper presents the results of three-dimensional and time-accurate Computational Fluid Dynamics (CFD) simulations of the flow field around the National Renewable Energy Laboratory (NREL) Phase VI horizontal axis wind turbine rotor. The 3-D, unsteady, parallel, finite volume flow solver, PUMA2, is used for the simulations. The solutions are obtained using unstructured moving grids rotating with the turbine blades. Three different flow cases with different wind speeds and wind yaw angles are investigated:...
EXPERIMENTAL AND NUMERICAL INVESTIGATION OF RADIAL-RADIAL SWIRLERS UNDER DIFFERENT CONFINEMENT CONDITIONS Kıyıcı, Fırat; Perçin, Mustafa; Department of Aerospace Engineering (2022-7-27) In modern gas turbine combustors, flame stabilization is achieved by use of swirlers which introduce swirl component to the flow field. Swirlers are inherently sensitive to flow and environmental conditions, and even a minor geometrical modification can change the flow field remarkably. One of the critical parameters that affect the performance of the swirler is the channel orientation of the swirler channels. In the literature, the channel orientation has been mostly investigated at constant confinement ra...
Design and analysis of a vertical axis water turbine for river applications using computational fluid dynamics Demircan, Eren; Aksel, Mehmet Haluk; Pınarcıoğlu, Mehmet Melih; Department of Mechanical Engineering (2014) The main purpose of this study is to design a Darrieus rotor type vertical axis water turbine using Computational Fluid Dynamics (CFD) in order to be used in river currents. The CFD modeling is based on two dimensional numerical solution of the rotor motion using commercial Unsteady Reynolds Averaged Navier-Stokes solvers, Ansys Fluent and CFX. To validate the two dimensional numerical solution, an experimental Darrieus rotor type water turbine from literature is studied and performance of several turbulenc...
Numerical simulation of transient turbulent flow in a heated pipe Uygur, Ahmet Bilge; Selçuk, Nevin; Oymak, Olcay; Department of Chemical Engineering (2002) A computational fluid dynamics (CFD) code based on direct numerical simulation (DNS) and the method of lines MOL approach developed previously for the solution of transient two-dimensional Navier-Stokes equations for turbulent, incompressible, internal, non-isothermal flows with constant wall temperature was applied to prediction of turbulent flow and temperature fields in flows dominated by forced convection in circular tubes with strong heating. Predictive ability of the code was tested by comparing its r...
Numerical investigation of characteristics of pitch and roll damping coefficients for missile models Kayabaşı, İskander; Kurtuluş, Dilek Funda; Department of Aerospace Engineering (2012) In this thesis the characteristics of pitch and roll damping coefficients of missile models are investigated by using Computational Fluid Dynamics (CFD) techniques. Experimental data of NACA0012 airfoil, Basic Finner (BF) and Modified Basic Finner (MBF) models are used for validation and verification studies. Numerical computations are performed from subsonic to supersonic flow regimes. Grid refinement and turbulence model selection studies are conducted before starting the dynamic motion simulations. Numer...

Citation Formats

K. Yapici, B. Karasözen, M. Schaefer, and Y. Uludağ, “Numerical investigation of the effect of the Rushton type turbine design factors on agitated tank flow characteristics,” CHEMICAL ENGINEERING AND PROCESSING, pp. 1346–1355, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31616.