Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 3

Publications

3 Vortex Formation in Lid-driven Cavity with Disturbance Block

Authors: Reza Maddahian, Hassan Basirat Tabrizi, Maysam Saidi

Abstract:

In this paper, numerical simulations are performed to investigate the effect of disturbance block on flow field of the classical square lid-driven cavity. Attentions are focused on vortex formation and studying the effect of block position on its structure. Corner vortices are different upon block position and new vortices are produced because of the block. Finite volume method is used to solve Navier-Stokes equations and PISO algorithm is employed for the linkage of velocity and pressure. Verification and grid independency of results are reported. Stream lines are sketched to visualize vortex structure in different block positions.

Keywords: finite volume method, lid-driven cavity, Disturbance Block

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1498
2 A Parametric Study on Deoiling Hydrocyclones Flow Field

Authors: Reza Maddahian, Bijan Farhanieh, Maysam Saidi

Abstract:

Hydrocyclones flow field study is conducted by performing a parametric study. Effect of cone angle on deoiling hydrocyclones flow behaviour is studied in this research. Flow field of hydrocyclone is obtained by three-dimensional simulations with OpenFOAM code. Because of anisotropic behaviour of flow inside hydrocyclones LES is a suitable method to predict the flow field since it resolves large scales and model isotropic small scales. Large eddy simulation is used to predict the flow behavior of three different cone angles. Differences in tangential velocity and pressure distribution are reported in some figures.

Keywords: large eddy simulation, flow field, pressure distribution, Deoiling hydrocyclones, Hydrocyclone cone angle

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1962
1 Deoiling Hydrocyclones Flow Field-A Comparison between k-Epsilon and LES

Authors: Reza Maddahian, Bijan Farhanieh, Maysam Saidi

Abstract:

In this research a comparison between k-epsilon and LES model for a deoiling hydrocyclone is conducted. Flow field of hydrocyclone is obtained by three-dimensional simulations with OpenFOAM code. Potential of prediction for both methods of this complex swirl flow is discussed. Large eddy simulation method results have more similarity to experiment and its results are presented in figures from different hydrocyclone cross sections.

Keywords: k-epsilon model, openFOAM, Deoiling hydrocyclones, Largeeddy simulation

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2026