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

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

Research output: Chapter in Book/Report/Conference proceedingConference 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: Chapter in Book/Report/Conference proceedingConference 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.
@inproceedings{38ac62e5d82940c0b33c08ed7a426f43,
title = "Computational study of turbulent single phase and multiphase flows in 90°bends",
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.",
author = "P. Zhang and Roberts, {R. M.} and A. B{\'e}nard and Petty, {C. A.}",
year = "2009",
language = "English (US)",
booktitle = "AIChE Annual Meeting, Conference Proceedings",

}

TY - GEN

T1 - Computational study of turbulent single phase and multiphase flows in 90°bends

AU - Zhang,P.

AU - Roberts,R. M.

AU - Bénard,A.

AU - Petty,C. A.

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=77951670745&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77951670745&partnerID=8YFLogxK

M3 - Conference contribution

BT - AIChE Annual Meeting, Conference Proceedings

ER -