NUMERICAL INVESTIGATION OF SEPARATION PHENOMENON ON THE TURBULENT AXIAL FLOW DOWNSTREAM OF A CIRCULAR CYLINDER

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SADODIN SEIFOLLAH; RASTGOU HAMID

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Journal: JOURNAL OF SOLID AND FLUID MECHANICS Year:2011 | Volume:1 | Issue:1 Page(s): 71-80

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Title

NUMERICAL INVESTIGATION OF SEPARATION PHENOMENON ON THE TURBULENT AXIAL FLOW DOWNSTREAM OF A CIRCULAR CYLINDER

Author(s)

SADODIN SEIFOLLAH | RASTGOU HAMID | Issue Writer Certificate

Keywords

TURBULENCE MODELINGQ3

SEPARATION PHENOMENONQ2

AXIAL FLOWQ2

CIRCULAR CYLINDERQ2

Abstract

This article presents a numerical investigation of turbulent flow in an axisymmetric separated and reattached flow over a longitudinal blunt CIRCULAR CYLINDER. With respect to the complexity of the simulation of the SEPARATION PHENOMENON, some numerical techniques such as discretization methods and pressure-velocity coupling algorithms were compared to reach a proper numerical method to solve the considered flow case. Further, the results of the standard k-e and shear stress transport (SST) turbulence models were used to predict the effects of turbulence were investigated. Besides, the effects of using the steady and pseudo-transient equations were discussed. Furthermore, a multi-grid method was employed to accelerate the convergence speed. All the numerical techniques were coded and compiled with Fortran 90 compiler. The code and computational method were then validated against experimental data, with good agreement. Finally, the structure of separation and reattachment of the considered flow case was investigated with the numerical code. Some characteristics of the flow such as reattachment length, velocity distributions, turbulent kinetic energy and pressure were discussed.

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APA: Copy

SADODIN, SEIFOLLAH, & RASTGOU, HAMID. (2011). NUMERICAL INVESTIGATION OF SEPARATION PHENOMENON ON THE TURBULENT AXIAL FLOW DOWNSTREAM OF A CIRCULAR CYLINDER. JOURNAL OF SOLID AND FLUID MECHANICS, 1(1), 71-80. SID. https://sid.ir/paper/212729/en

Vancouver: Copy

SADODIN SEIFOLLAH, RASTGOU HAMID. NUMERICAL INVESTIGATION OF SEPARATION PHENOMENON ON THE TURBULENT AXIAL FLOW DOWNSTREAM OF A CIRCULAR CYLINDER. JOURNAL OF SOLID AND FLUID MECHANICS[Internet]. 2011;1(1):71-80. Available from: https://sid.ir/paper/212729/en

IEEE: Copy

SEIFOLLAH SADODIN, and HAMID RASTGOU, “NUMERICAL INVESTIGATION OF SEPARATION PHENOMENON ON THE TURBULENT AXIAL FLOW DOWNSTREAM OF A CIRCULAR CYLINDER,” JOURNAL OF SOLID AND FLUID MECHANICS, vol. 1, no. 1, pp. 71–80, 2011, [Online]. Available: https://sid.ir/paper/212729/en

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