Large eddy simulation of turbulent flow laden with binary mixture of particles

Neng Tsung Chang, Chih Hung Hsu, Keh Chin Chang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Particle-laden turbulent channel flow at Reτ=644, loaded with binary mixture of particles, is numerically studied using the Lagrangian particle tracking method coupled with large eddy simulation. Turbulence statistics of different particle groups are analyzed. Two particle-wall models are applied to this study with / without considering wall roughness. Taking into considerations of rough wall model, the effect of wall roughness in the computations strengthens the wall-normal particle velocity fluctuations. As a result, particles tend to move from the near-wall region to the central core region. It leads to decrement of particle accumulation in the near-wall region as compared to the case considering the smooth wall model. The wall-normal particle mixing capability is enhanced which results in the redistribution of particles in the channel. The behavior of particle motion in the turbulent channel flow should be, thus, dependent on not only the value of Stokes number but also the wall roughness level.

Original languageEnglish
Title of host publication2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
Pages815-821
Number of pages7
EditionPART A
DOIs
Publication statusPublished - 2007 Dec 1
Event2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007 - San Diego, CA, United States
Duration: 2007 Jul 302007 Aug 2

Publication series

Name2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
NumberPART A
Volume1 SYMPOSIA

Other

Other2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
CountryUnited States
CitySan Diego, CA
Period07-07-3007-08-02

Fingerprint

Large eddy simulation
large eddy simulation
Binary mixtures
turbulent flow
binary mixtures
Turbulent flow
Surface roughness
Channel flow
Turbulence
Statistics
roughness
channel flow
particle motion
turbulence
statistics

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Condensed Matter Physics

Cite this

Chang, N. T., Hsu, C. H., & Chang, K. C. (2007). Large eddy simulation of turbulent flow laden with binary mixture of particles. In 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007 (PART A ed., pp. 815-821). (2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007; Vol. 1 SYMPOSIA, No. PART A). https://doi.org/10.1115/FEDSM2007-37049
Chang, Neng Tsung ; Hsu, Chih Hung ; Chang, Keh Chin. / Large eddy simulation of turbulent flow laden with binary mixture of particles. 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007. PART A. ed. 2007. pp. 815-821 (2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007; PART A).
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Chang, NT, Hsu, CH & Chang, KC 2007, Large eddy simulation of turbulent flow laden with binary mixture of particles. in 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007. PART A edn, 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007, no. PART A, vol. 1 SYMPOSIA, pp. 815-821, 2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007, San Diego, CA, United States, 07-07-30. https://doi.org/10.1115/FEDSM2007-37049

Large eddy simulation of turbulent flow laden with binary mixture of particles. / Chang, Neng Tsung; Hsu, Chih Hung; Chang, Keh Chin.

2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007. PART A. ed. 2007. p. 815-821 (2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007; Vol. 1 SYMPOSIA, No. PART A).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - Particle-laden turbulent channel flow at Reτ=644, loaded with binary mixture of particles, is numerically studied using the Lagrangian particle tracking method coupled with large eddy simulation. Turbulence statistics of different particle groups are analyzed. Two particle-wall models are applied to this study with / without considering wall roughness. Taking into considerations of rough wall model, the effect of wall roughness in the computations strengthens the wall-normal particle velocity fluctuations. As a result, particles tend to move from the near-wall region to the central core region. It leads to decrement of particle accumulation in the near-wall region as compared to the case considering the smooth wall model. The wall-normal particle mixing capability is enhanced which results in the redistribution of particles in the channel. The behavior of particle motion in the turbulent channel flow should be, thus, dependent on not only the value of Stokes number but also the wall roughness level.

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Chang NT, Hsu CH, Chang KC. Large eddy simulation of turbulent flow laden with binary mixture of particles. In 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007. PART A ed. 2007. p. 815-821. (2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007; PART A). https://doi.org/10.1115/FEDSM2007-37049