Analysis of dynamics of liquid jet injected into gaseous crossflow using proper orthogonal decomposition

Mukundan, Anirudh Asuri; Ménard, Thibaut; Herrmann, Marcus; Motta, Jorge César Brändle de; Berlemont, Alain

doi:10.2514/6.2020-0357

“…While the vast majority of related documented studies rely on explicit and segregated methods (such as projection methods), we describe here a fully coupled method for dealing with velocity-pressure coupling, to take advantage of its robustness, principally for the simulation of two-phase flows at large density and viscosity ratios, which has been little studied in the literature. Furthermore, it has been demonstrated that the fully-coupled solver hence preserving the consistency of the discretized system with the continuous equations at large contrast ratio in most cases, which allows to simplify the implementation and to potentially overcome the momentum conserving method contributions (Sussman [32], Raessi [33], Le chenadec [34], Desjardins [35], Ménard [36], . .…”

Section: Introductionmentioning

confidence: 99%

Monolithic Solvers for Incompressible Two-Phase Flows at Large Density and Viscosity Ratios

Ouafa

¹

,

Vincent

²

,

Chenadec

³

2021

Fluids

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In this paper, we investigate the accuracy and robustness of three classes of methods for solving two-phase incompressible flows on a staggered grid. Here, the unsteady two-phase flow equations are simulated by finite volumes and penalty methods using implicit and monolithic approaches (such as the augmented Lagrangian and the fully coupled methods), where all velocity components and pressure variables are solved simultaneously (as opposed to segregated methods). The interface tracking is performed with a Volume-of-Fluid (VOF) method, using the Piecewise Linear Interface Construction (PLIC) technique. The home code Fugu is used for implementing the various methods. Our target application is the simulation of two-phase flows at high density and viscosity ratios, which are known to be challenging to simulate. The resulting strategies of monolithic approaches will be proven to be considerably better suited for these two-phase cases, they also allow to use larger time step than segregated methods.

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“…While the vast majority of related documented studies rely on explicit and segregated methods (such as projection methods), we describe here a fully coupled method for dealing with velocity-pressure coupling, to take advantage of its robustness, principally for the simulation of two-phase flows at large density and viscosity ratios, which has been little studied in the literature. Furthermore, it has been demonstrated that the fully-coupled solver hence preserving the consistency of the discretized system with the continuous equations at large contrast ratio in most cases, which allows to simplify the implementation and to potentially overcome the momentum conserving method contributions ( Sussman [32], Raessi [33], Le chenadec [34], Desjardins [35], Ménard [36], ...). To characterize the interface location, a PLIC VOF approach is used in the present work.…”

Section: Introductionmentioning

confidence: 99%

Monolithic Solvers for Incompressible Two-Phase Flows at Large Density and Viscosity Ratios

Ouafa

¹

,

Vincent

²

,

Chenadec

³

2020

Preprint

0

View full text Add to dashboard Cite

In this paper, we investigate the accuracy and robustness of three classes of methods for solving two-phase incompressible flows on a staggered grid. Here, the unsteady two-phase flow equations are simulated by finite volumes and penalty methods using implicit and monolithic approaches (such as the augmented Lagrangian and the fully coupled methods), where all velocity components and pressure variables are solved simultaneously (as opposed to segregated methods). The interface tracking is performed with a Volume-of-Fluid (VOF) method, using the Piecewise Linear Interface Construction (PLIC) technique. The home code Fugu is used for implementing the various methods. Our target application is the simulation of two-phase flows at high density and viscosity ratios, which are known to be challenging to simulate. The resulting strategies of monolithic approaches will be proven to be considerably better suited for these two-phase cases, they also allow to use larger time step than segregated methods.

show abstract

Effect of injector geometry in breakup of liquid jet in crossflow – insights from POD

Sinha

¹

2023

International Journal of Multiphase Flow

5

0

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Analysis of dynamics of liquid jet injected into gaseous crossflow using proper orthogonal decomposition

Cited by 4 publications

References 24 publications

Monolithic Solvers for Incompressible Two-Phase Flows at Large Density and Viscosity Ratios

Monolithic Solvers for Incompressible Two-Phase Flows at Large Density and Viscosity Ratios

Monolithic Solvers for Incompressible Two-Phase Flows at Large Density and Viscosity Ratios

Effect of injector geometry in breakup of liquid jet in crossflow – insights from POD

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