Computational study of turbulent single phase and multiphase flows in 90°bends

P. Zhang, R. M. Roberts, A. Bénard, C. A. Petty

    Research output: ResearchConference contribution

    • 3 Citations

    Abstract

    Turbulent flows passing through an L-bend are studied in this work using computer simulations. The simulations are performed based on a RANS model with a Reynolds Stress Model. Results of these computations show that turbulent bend flows possess complicated patterns that significantly affect the pressure drop and particle deposition. These are influenced by the flow Re number and the bend geometric configuration. Several wall function models are available for performing the simulations and it is found that EWF perform best in predicting particle deposition, especially if the particles are small. The inaccuracy of SWF and NEWF for particle deposition indicates that these near-wall treatments are not appropriate for the problem at hand. In addition, the numerical results show that SWF could not accurately predict pressure drop at the side wall as well as the straight pipe after the bend. Since EWF has the advantage in predicting flow at the near-wall region, using EWF as the near-wall treatment based on an RSM appears to be adequate for simulating the pressure drop and particle deposition in L-bends and U-bends.

    LanguageEnglish (US)
    Title of host publicationAIChE Annual Meeting, Conference Proceedings
    StatePublished - 2009
    Event2009 AIChE Annual Meeting, 09AIChE - Nashville, TN, United States
    Duration: Nov 8 2009Nov 13 2009

    Other

    Other2009 AIChE Annual Meeting, 09AIChE
    CountryUnited States
    CityNashville, TN
    Period11/8/0911/13/09

    Profile

    Multiphase flow
    Pressure drop
    Wall function
    Turbulent flow
    Pipe
    Computer simulation

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Chemistry(all)

    Cite this

    Zhang, P., Roberts, R. M., Bénard, A., & Petty, C. A. (2009). Computational study of turbulent single phase and multiphase flows in 90°bends. In AIChE Annual Meeting, Conference Proceedings

    Computational study of turbulent single phase and multiphase flows in 90°bends. / Zhang, P.; Roberts, R. M.; Bénard, A.; Petty, C. A.

    AIChE Annual Meeting, Conference Proceedings. 2009.

    Research output: ResearchConference contribution

    Zhang, P, Roberts, RM, Bénard, A & Petty, CA 2009, Computational study of turbulent single phase and multiphase flows in 90°bends. in AIChE Annual Meeting, Conference Proceedings. 2009 AIChE Annual Meeting, 09AIChE, Nashville, TN, United States, 11/8/09.
    Zhang P, Roberts RM, Bénard A, Petty CA. Computational study of turbulent single phase and multiphase flows in 90°bends. In AIChE Annual Meeting, Conference Proceedings. 2009.
    Zhang, P. ; Roberts, R. M. ; Bénard, A. ; Petty, C. A./ Computational study of turbulent single phase and multiphase flows in 90°bends. AIChE Annual Meeting, Conference Proceedings. 2009.
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