A correction scheme for wall-bounded two-way coupled point-particle simulations

Pakseresht, Pedram; Esmaily, Mahdi; Apte, Sourabh V.

doi:10.1016/j.jcp.2020.109711

Cited by 19 publications

(11 citation statements)

References 46 publications

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“…The affordability of the approximate method makes it an attractive scheme for recovering the undisturbed flow field, given the fact that the difference in the error reduction between these two methods is still insignificant. The errors for approximate method in this case are also comparable to those reported by Pakseresht et al (2020). Figure 2 qualitatively illustrates the performance of these models in predicting the time-dependent particle velocity for different grid resolutions.…”

Section: Settling In An Unbounded Quiescent Fluidsupporting

confidence: 76%

“…Although their physics-based model was devised to handle (i) relatively large size particles even larger than the grid resolution, (ii) isotropic and anisotropic grids, (iii) flows with finite, but low Re p , and (iv) arbitrary interpolation and distribution functions, it is limited to unbounded flows. Pakseresht et al (2020) extended this idea to wall-bounded flows by using empirical expressions as well as wall-modified Stokeslet solution. Their approach is applicable to large size particles and extreme anisotropic grids, typically employed in wall-bounded turbulent flows.…”

Section: Introductionmentioning

confidence: 99%

“…Their model is capable of recovering the undisturbed fluid velocity at any arbitrary wall distance and asymptotically approaches the regular unbounded correction schemes for particles traveling sufficiently away from the no-slip wall. The above correction schemes by Esmaily and Horwitz (2018); Pakseresht et al (2020) remove the self-induced disturbance for each individual particle when correcting the particle forces, keeping the effects of all the other particles in the neighborhood unchanged. Thus, their approaches implicitly account for the effect of neighbors on the individual particle force closures; however, in its present form is limited to Re p <10 and tri-linear interpolation on rectilinear grids.…”

Section: Introductionmentioning

confidence: 99%

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A disturbance corrected point-particle approach for two-way coupled particle-laden flows on arbitrary shaped grids

Pakseresht,

Apte

2020

Preprint

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A general, two-way coupled, point-particle formulation that accounts for the disturbance created by the dispersed particles in obtaining the undisturbed fluid flow field needed for accurate computation of the force closure models is presented. Specifically, equations for the disturbance field created by the presence of particles are first derived based on the inter-phase momentum coupling force in a finite-volume formulation. Solution to the disturbance field is obtained using two approaches: (i) direct computation of the disturbance velocity and pressure using the reaction force due to particles at computational control volumes, and (ii) a linearized, approximate computation of the disturbance velocity field, specifically applicable for low Reynolds number flows. In both approaches, the computed disturbance field is used to obtain the undisturbed fluid velocity necessary to model the aerodynamic forces on the particle. The two approaches are thoroughly evaluated for a single particle in an unbounded and wall-bounded flow on uniform, anisotropic, as well as unstructured grids to show accurate computation of the particle motion and inter-phase coupling. The approach is straightforward and can be applied to any numerical formulation for particle-laden flows including Euler-Lagrange as well as Euler-Euler formulations.

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Section: Settling In An Unbounded Quiescent Fluidsupporting

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A disturbance corrected point-particle approach for two-way coupled particle-laden flows on arbitrary shaped grids

Pakseresht,

Apte

2020

Preprint

Self Cite

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“…2015; Horwitz & Mani 2016; Ireland & Desjardins 2017; Battista et al. 2019; Pakseresht, Esmaily & Apte 2020). Moreover, results in the literature for integral observables show qualitatively different trends.…”

Section: Introductionmentioning

confidence: 99%

Near-wall turbulence modulation by small inertial particles

Costa¹,

Brandt²,

Picano³

2021

J. Fluid Mech.

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“…However, their undisturbed values are needed for drag, heat and mass transfer models, and are no longer available. Obtaining the undisturbed flowfield, by correcting for the self-disturbance created by the droplet, has received significant attention recently [5,6,7,8]. Majority of these studies are for isothermal, solid particles, and invoke low Reynolds number, Stokes flow solutions.…”

Section: Introductionmentioning

confidence: 99%

A Correction Scheme For Point-Particle Modeling of Droplets and Spray Systems

Apte

2021

ICLASS

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Modeling of spray systems using the point-particle approach requires estimation of the undisturbed fluid flow quantities such as velocity, pressure, species mass fraction, and temperature at the droplet location, to accurately capture the droplet dynamics. However, in a typical two-way coupled computation, the droplets affect the fluid flow through mass, momentum, and energy exchange, and disturb the flow. This self-disturbance effect is significant for droplet sizes that are on the same order or larger than the grid resolution, which in practice is common in spray studies, even for a point-particle based approach. A general formulation that accounts for the self-disturbance created by the dispersed droplets in obtaining the undisturbed fluid flow for accurate computation of the force closure, thermal heating, and evaporation is derived. This self disturbance-corrected approach is evaluated for two simple test cases of (i) single droplet held fixed in a uniform flow of hot fluid, and (ii) gravitational settling of a droplet in a quiescent, hot fluid to show very good predictive capability. The approach is straightforward and can be applied to any numerical formulation for spray systems.

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A correction scheme for wall-bounded two-way coupled point-particle simulations

Cited by 19 publications

References 46 publications

A disturbance corrected point-particle approach for two-way coupled particle-laden flows on arbitrary shaped grids

A disturbance corrected point-particle approach for two-way coupled particle-laden flows on arbitrary shaped grids

Near-wall turbulence modulation by small inertial particles

A Correction Scheme For Point-Particle Modeling of Droplets and Spray Systems

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