Applications of FLUENT - Two Flow Modeling Examples

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# Applications of FLUENT - Two Flow Modeling Examples - PowerPoint PPT Presentation

Applications of FLUENT - Two Flow Modeling Examples. By Jean Wang, Ph. D. May 13, 2005 Northern HPC Spring Conference. FLUENT?. Fluent is a commercial computational fluid dynamics (CFD) software.

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## Applications of FLUENT - Two Flow Modeling Examples

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### Applications of FLUENT - Two Flow Modeling Examples

By Jean Wang, Ph. D.

May 13, 2005

Northern HPC Spring Conference

FLUENT?
• Fluent is a commercial computational fluid dynamics (CFD) software.
• It could be used for simulation, visualization, and analysis of fluid flow, heat and mass transfer, and chemical reactions.
• Industries that use Fluent CFD includes aerospace, automotive, electronics cooling, healthcare, chemical process etc.
Numerical Approach
• Grids was generated by GAMBIT, a preprocessor of Fluent. Both Quadrilateral cells and triangular cells were used.
• Variety of turbulence models have been used in the simulations including Spalart-Allmaras turbulence model, five equation Reynolds Stress Model and LES.
• Fluent, Tecplot, and FIELDVIEW have been used for data visualization.
Problem Description (case 1): Laminar Flow Through a Staggered Tube Bank
• Solution Domain:

Lus=4.875 (m), Ltb=11.691 (m), Lds=23 (m)

Problem Description (case 1): Continue
• Staggered Tube Bank Nomenclature:

SL=1.2990 (m), ST=1.50 (m), D=1 (m)

Grid for Case 1
• Grid details in part of solution domain: the quadrrilateral cells were used around the tube wall and triangle cells were used in all other region.
Problem Description (case 2): Flow Through a Smooth Rectangular Open-Channel
• The channel is 0.192 m in width, and 0.6 m in length, and the water depth is 0.1 m.
• The slope of the channel is 0.001.
Problem Description (case 2, Continued): Flow Through a Smooth Rectangular Open-Channel
• D=0.05 m
Results for Case 2 (Continued): Streamlines
• Flow around spheres

(plotted by FIELDVIEW)

Results for Case 2 (Continued): Water Depth
• Exp. data:
• H1=0.0945 m
• V1=0.6 m/s
• H2=0.0593 m
• V1=1.07 m/s
Conclusions
• Case 1  FLUENT is a state-of-the-art CFD Software.
• Case 2  The capability of FLUENT was tested in a multiphase flow.
• Reference:

Y.Q. Wang, L.A. Penner, and S.J. Ormiston, "Analysis of Laminar Forced Convection of Air for Crossflow in Banks of staggered Tubes", 2000, Numerical Heat Transfer, Part A, Vol. 38, pp. 819-845.

Y.Q. Wang, “Laminar Flow Through a Staggered Tube Bank", 2004, Journal of Thermophysics and Heat Transfer, Vol. 18, pp. 557-559.