Closure models for turbulent reacting flows

Journal Article · Fri Dec 01 00:00:00 EST 1989 · A.I.Ch.E. Journal (American Institute of Chemical Engineers); (USA)

DOI:https://doi.org/10.1002/aic.690351212· OSTI ID:6710359

Dutta, A; Tarbell, J M ^[1]

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1. Pennsylvania State Univ., University Park, PA (USA). Dept. of Chemical Engineering

In this paper, a simple procedure based on fast and slow reaction asymptotics has been employed to drive first-order closure models for the nonlinear reaction terms in turbulent mass balances from mechanistic models of turbulent mixing and reaction. The coalescence-redispersion (CRD) model, the interaction by exchange with the mean (IEM) model, the three-environment (3E) model, and the four-environment (4E) model have been used to develop closure equations. The closure models have been tested extensively against experimental data for both single and multiple reactions. The closures based on slow asymptotics for the CRD, 3E and 4E models provide very good predictions of all of the experimental data, while other models available either in the literature or derived here are not adequate. The simple new closure equations developed in this paper may be useful in modeling systems involving turbulent mixing and complex chemical reactions.

• OSTI ID: 6710359
• Journal Information: A.I.Ch.E. Journal (American Institute of Chemical Engineers); (USA), Vol. 35:12; ISSN 0001-1541
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHEMICAL REACTORS
TURBULENT FLOW
MIXTURES
NONLINEAR PROBLEMS
ASYMPTOTIC SOLUTIONS
CHEMICAL REACTIONS
EQUATIONS
MASS BALANCE
DISPERSIONS
FLUID FLOW
420400* - Engineering- Heat Transfer & Fluid Flow
657002 - Theoretical & Mathematical Physics- Classical & Quantum Mechanics
400201 - Chemical & Physicochemical Properties