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Turbulence model sensitivity and scour gap effect of unsteady flow around pipe: a CFD study.

Ali A, Sharma RK, Ganesan P, Akib S - ScientificWorldJournal (2014)

Bottom Line: A numerical investigation of incompressible and transient flow around circular pipe has been carried out at different five gap phases.Flow equations such as Navier-Stokes and continuity equations have been solved using finite volume method.Unsteady horizontal velocity and kinetic energy square root profiles are plotted using different turbulence models and their sensitivity is checked against published experimental results.

View Article: PubMed Central - PubMed

Affiliation: Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia.

ABSTRACT
A numerical investigation of incompressible and transient flow around circular pipe has been carried out at different five gap phases. Flow equations such as Navier-Stokes and continuity equations have been solved using finite volume method. Unsteady horizontal velocity and kinetic energy square root profiles are plotted using different turbulence models and their sensitivity is checked against published experimental results. Flow parameters such as horizontal velocity under pipe, pressure coefficient, wall shear stress, drag coefficient, and lift coefficient are studied and presented graphically to investigate the flow behavior around an immovable pipe and scoured bed.

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Related in: MedlinePlus

Geometrical model of computational domain and boundary conditions.
© Copyright Policy - open-access
Related In: Results  -  Collection


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fig1: Geometrical model of computational domain and boundary conditions.

Mentions: Figure 1 shows the schematic of the two-dimensional (2D) geometrical domain used in the present study along with the corresponding boundary conditions. A logarithmic velocity profile as presented in Figure 3 is created using user-defined functions (UDF) in Fluent based on the following formulation [22]:(1)u∞=u∗Kln⁡yy0.


Turbulence model sensitivity and scour gap effect of unsteady flow around pipe: a CFD study.

Ali A, Sharma RK, Ganesan P, Akib S - ScientificWorldJournal (2014)

Geometrical model of computational domain and boundary conditions.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4129154&req=5

fig1: Geometrical model of computational domain and boundary conditions.
Mentions: Figure 1 shows the schematic of the two-dimensional (2D) geometrical domain used in the present study along with the corresponding boundary conditions. A logarithmic velocity profile as presented in Figure 3 is created using user-defined functions (UDF) in Fluent based on the following formulation [22]:(1)u∞=u∗Kln⁡yy0.

Bottom Line: A numerical investigation of incompressible and transient flow around circular pipe has been carried out at different five gap phases.Flow equations such as Navier-Stokes and continuity equations have been solved using finite volume method.Unsteady horizontal velocity and kinetic energy square root profiles are plotted using different turbulence models and their sensitivity is checked against published experimental results.

View Article: PubMed Central - PubMed

Affiliation: Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia.

ABSTRACT
A numerical investigation of incompressible and transient flow around circular pipe has been carried out at different five gap phases. Flow equations such as Navier-Stokes and continuity equations have been solved using finite volume method. Unsteady horizontal velocity and kinetic energy square root profiles are plotted using different turbulence models and their sensitivity is checked against published experimental results. Flow parameters such as horizontal velocity under pipe, pressure coefficient, wall shear stress, drag coefficient, and lift coefficient are studied and presented graphically to investigate the flow behavior around an immovable pipe and scoured bed.

Show MeSH
Related in: MedlinePlus