A second-order moment method of dense gas–solid flow for bubbling fluidization

Sun, Dezhi; Wang, Shuyan; Huilin, Lu; Shen, Zhiheng; Li, Xiang; Wang, Shuai; Zhao, Yunhua; Wei, Lixin

doi:10.1016/j.ces.2009.08.005

Cited by 24 publications

(8 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The transport equations with the second-order moments of particles proposed by Dan et al (2009) are summarized in Table 1, and used in present simulations. The continuity equation of particles (zeroth-order moment N= 0) is shown in Eq.…”

Section: Moment Transport Equations With Frication Stresses Model Of mentioning

confidence: 99%

“…The normal velocity of particles is set to zero at the wall. Considering the increase of the binary collision probability at the dense flow of particles, the boundary equations of the tangential velocity and second-order moments proposed by Dan et al (2009) are used and given in Eq. (T1-16)- (T1-19).…”

Section: Boundary Conditionsmentioning

confidence: 99%

“…Fox (2008) derived a quadrature-based third-order moment method governed by the kinetic equation with gravity and fluid drag that can be applied to gas-particle flows at any Knudsen number. Dan et al (2009) proposed a gas-solid two-fluid model with the secondorder moment method. Closure equation for the fluid-particle velocity correlation was modeled by an algebraic model proposed by Koch and Sangani (1999).…”

mentioning

confidence: 99%

“…In this article, we present a gas-solid two-phase flow model, involving a second-order moment and frictional closure for the particle phase stress, to predict hydrodynamic behavior in spouted beds. The collisional interaction of particles is modeled on the basis of the second-order moment method proposed by Dan et al (2009). For frictional stress of particles, a normal frictional stress model proposed by Johnson et al (1990) and the frictional shear stress model proposed by Syamlal et al (1993) are used.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Simulations of flow behavior of gas and particles in a spouted bed using a second-order moment method-frictional stresses model

Sun

Wang

Gougdong

et al. 2010

Chemical Engineering Science

Self Cite

View full text Add to dashboard Cite

Section: Moment Transport Equations With Frication Stresses Model Of mentioning

confidence: 99%

Section: Boundary Conditionsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Simulations of flow behavior of gas and particles in a spouted bed using a second-order moment method-frictional stresses model

Sun

Wang

Gougdong

et al. 2010

Chemical Engineering Science

Self Cite

View full text Add to dashboard Cite

“…31 Simonin 32 adopted a moment method based on the Grad 26 approach to simulate particle-laden jets in dilute gasparticle flows. 18,36 A second-order moment method is proposed by Dan et al 37 based on the KTGF. Desjardin et al 35 used a quadrature-based moment method to show the limitations of the two-fluid model in predicting particle trajectory crossing, which leads to inconsistent predictions by the hydrodynamic model for all the velocity moments for nonzero Stokes numbers and to the overprediction of particle segregation.…”

Section: Introductionmentioning

confidence: 99%

A second‐order moment method applied to gas–solid risers

et al. 2012

View full text Add to dashboard Cite

Second‐order moment method of particles is proposed on the basis of the kinetic theory of granular flow. Closure equations for the third‐order velocity moments are presented to account for the increase of the probability of collisions of particles on the basis of the elementary kinetic theory and order of magnitude analysis. The boundary conditions for the set of equations describing flow of particles are proposed with the consideration of the momentum exchange by collisions between the wall and the particles. The distributions of velocity, concentration and moments of particles are predicted. Simulated results are compared with experimental data measured by Tartan and Gidaspow and Bhusarapu et al. in risers, and Tsuji et al. in a vertical pipe. The effects of the closure equations for the third‐order velocity moments and the fluid‐particle velocity correlation tensor on flow behavior of particles are analyzed. © 2012 American Institute of Chemical Engineers AIChE J, 2012

show abstract

Continuum model validation of gas jet plume injection into a gas–solid bubbling fluidized bed

et al. 2013

View full text Add to dashboard Cite

A continuum gas–solid model that includes descriptions for solid frictional stress and a turbulent gas phase is evaluated against published experimental measurements of mean and fluctuating velocity inside the jet plume region of a bubbling fluidized bed with a high‐speed vertical jet injection. The main uncertainties in closure relations necessary in the continuum model are first identified and then determined using available experimental data. The overall model shows good agreement with both the gas and particle experimental velocity profiles. The trends in the centerline mean and fluctuating velocity with change in the fluidized state of the emulsion are also captured favorably. Main deviations between the model and experiment are noted and possible reasons for the mismatch are discussed. © 2013 American Institute of Chemical Engineers AIChE J, 59: 3247–3264, 2013

show abstract

A second-order moment method of dense gas–solid flow for bubbling fluidization

Cited by 24 publications

References 50 publications

Simulations of flow behavior of gas and particles in a spouted bed using a second-order moment method-frictional stresses model

Simulations of flow behavior of gas and particles in a spouted bed using a second-order moment method-frictional stresses model

A second‐order moment method applied to gas–solid risers

Continuum model validation of gas jet plume injection into a gas–solid bubbling fluidized bed

Contact Info

Product

Resources

About