Numerical investigation of DQMoM-IEM as a turbulent reaction closure

Akroyd, Jethro; Smith, A. J.; McGlashan, Laurence R.; Kraft, Markus

doi:10.1016/j.ces.2009.11.010

Cited by 45 publications

(37 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…(17) requires special care to avoid discontinuities and enforce boundedness. It is solved using one of either the analytic or general solver methods described by Akroyd et al (2010). The particular implementations in this paper invoke a further splitting given for the analytic solver …”

Section: Dqmom-iem Coupling To Cfdmentioning

confidence: 99%

“…The diffusion term is poorly conditioned and is singular if any c ðnÞ a are equal. Its numerical treatment is investigated in detail by Akroyd et al (2010).…”

Section: Theoretical Backgroundmentioning

confidence: 99%

“…In particular, it is the use of weighted fields and the correct specification of the boundary conditions on the weights that allow the underlying PDF to be modelled with only a few fields (Akroyd et al, 2010). In the case of SF, the method specifies equi-weighted fields, and the moments of the modelled PDF are governed entirely by the stochastic action of Eq.…”

Section: Common Featuresmentioning

confidence: 99%

See 2 more Smart Citations

Comparison of the stochastic fields method and DQMoM-IEM as turbulent reaction closures

Akroyd¹,

Smith²,

McGlashan³

et al. 2010

Chemical Engineering Science

Self Cite

View full text Add to dashboard Cite

Section: Dqmom-iem Coupling To Cfdmentioning

confidence: 99%

“…The diffusion term is poorly conditioned and is singular if any c ðnÞ a are equal. Its numerical treatment is investigated in detail by Akroyd et al (2010).…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Section: Common Featuresmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of the stochastic fields method and DQMoM-IEM as turbulent reaction closures

Akroyd¹,

Smith²,

McGlashan³

et al. 2010

Chemical Engineering Science

Self Cite

View full text Add to dashboard Cite

“…Tang et al studied the numerical investigation with direct quadrature method of moments (DQMOM) for tested the finite-rate chemistry by modeling a series of bluffbody stabilized flames and showed that the MEPDF model accurately take the trends exhibited among these flames [18]. Important study of sensitivity have been presented by Akroyd et al [19]for new aspect of the method and discuss the problems of boundedness and singularity by introduce a new DQMoM-IEM source terms.…”

Section: Introductionmentioning

confidence: 99%

“…The second one to solve this issue is the eulerian PDF method, some researchers has studied and proposed various ideas in the literature to explain the presumed shape multienvironment eulerian method (MEPDF) in turbulent reaction flow [17][18][19][20][21][22]. Tang et al studied the numerical investigation with direct quadrature method of moments (DQMOM) for tested the finite-rate chemistry by modeling a series of bluffbody stabilized flames and showed that the MEPDF model accurately take the trends exhibited among these flames [18].…”

Section: Introductionmentioning

confidence: 99%

Untitled

2018

IJHT

View full text Add to dashboard Cite

Transported probability density function (PDF) approach have been applied broadly and effectively for modelling turbulent reacting flows. The discretization of this approach is done with two methods, Multi-Environment Eulerian (MEPDF) and Lagrangian MonteCarlo (LPDF) which each method has advantages and disadvantages. The aim of this work is to investigate the capabilities of each method in predicting hydrogen combustion in a turbulent flame. A comparative study has been adopted between the two methodsby equivalent physical models and numerical parameters. The study was applied in the diffusion turbulent flame of hydrogen into a vitiated of hot coflow with modified K-epsilon model of turbulence. The chosen mixture model is the IEM (Interaction by Exchange with the Mean) with mixing constant (2.1). The number of environment in the first approach is (2.0). The model was solved in this work by the commercial CFD code, ANSYS fluent and the chemical reaction mechanism injected is GRI mech 2.1. The numerical results for temperature and species mass fractions are presented and compared with the experimental data. The comparison shows that the eulerian method gives better predictions than the lagrangian method. The advantages and disadvantages of both models are discussed in detail in relationship to the results.

show abstract

Impinging jet mixers: A review of their mixing characteristics, performance considerations, and applications

Devos,

Mukherjee,

Inguva

et al. 2024

AIChE Journal

View full text Add to dashboard Cite

Optimal control over fast chemical processes hinges on the achievement of rapid and effective mixing. Impinging jet mixers are a unique class of passive mixing devices renowned for their exceptional ability to achieve rapid mixing at micro‐length scales, whilst offering the possibility of a high throughput. Comprising of two co‐linear jets flowing in opposite directions and colliding with each other within a small (usually confined) volume, these devices effectively intensify various mixing‐controlled processes in a reproducible manner. Impinging jet mixers find extensive use in both the chemical and pharmaceutical industry for a plethora of applications, such as reaction injection molding and precipitation processes. This review provides an overview of research related to impinging jet mixers, with an emphasis on the mixing characteristics and the influence of design and process parameters on the mixing performance. Lastly, specific applications for which these devices are exceptionally suited are discussed.

show abstract

Numerical investigation of DQMoM-IEM as a turbulent reaction closure

Cited by 45 publications

References 22 publications

Comparison of the stochastic fields method and DQMoM-IEM as turbulent reaction closures

Comparison of the stochastic fields method and DQMoM-IEM as turbulent reaction closures

Untitled

Impinging jet mixers: A review of their mixing characteristics, performance considerations, and applications

Contact Info

Product

Resources

About