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Modeling turbulence structure. Chemical kinetics interaction in turbulent reactive flows

Abstract

The challenge of the mathematical modelling is to transfer basic physical knowledge into a mathematical formulation such that this knowledge can be utilized in computational simulation of practical problems. The combustion phenomena can be subdivided into a large set of interconnected phenomena like flow, turbulence, thermodynamics, chemical kinetics, radiation, extinction, ignition etc. Combustion in one application differs from combustion in another area by the relative importance of the various phenomena. The difference in fuel, geometry and operational conditions often causes the differences. The computer offers the opportunity to treat the individual phenomena and their interactions by models with wide operational domains. The relative magnitude of the various phenomena therefore becomes the consequence of operational conditions and geometry and need not to be specified on the basis of experience for the given problem. In mathematical modelling of turbulent combustion, one of the big challenges is how to treat the interaction between the chemical reactions and the fluid flow i.e. the turbulence. Different scientists adhere to different concepts like the laminar flamelet approach, the pdf approach of the Eddy Dissipation Concept. Each of these approaches offers different opportunities and problems. All these models are based on a sound physical basis, however none  More>>
Authors:
Magnussen, B F [1] 
  1. The Norwegian Univ. of Science and Technology, Trondheim (Norway)
Publication Date:
Dec 31, 1997
Product Type:
Conference
Report Number:
TKK-MK-1; CONF-9706306-
Reference Number:
SCA: 330100; 420400; PA: FI-99:003117; EDB-99:069886; SN: 99002078282
Resource Relation:
Conference: 4. international colloquium on process simulation, Espoo (Finland), 11-13 Jun 1997; Other Information: PBD: 1997; Related Information: Is Part Of The 4th international colloquium on process simulation. Proceedings; Jokilaakso, A. [Helsinki Univ. of Technology, Otaniemi (Finland). Dept. of Materials Science and Metallurgy]; PB: 621 p.
Subject:
33 ADVANCED PROPULSION SYSTEMS; 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; CALCULATION METHODS; COMBUSTION; COMBUSTORS; MATHEMATICAL MODELS; FLUID FLOW; TURBULENCE; CHEMICAL REACTION KINETICS; DISSIPATION FACTOR
OSTI ID:
357223
Research Organizations:
Helsinki Univ. of Technology, Otaniemi (Finland)
Country of Origin:
Finland
Language:
English
Other Identifying Numbers:
Other: ON: DE99735414; ISBN 951-22-3574-9; TRN: FI9903117
Availability:
OSTI as DE99735414
Submitting Site:
FI
Size:
pp. 327-342
Announcement Date:

Citation Formats

Magnussen, B F. Modeling turbulence structure. Chemical kinetics interaction in turbulent reactive flows. Finland: N. p., 1997. Web.
Magnussen, B F. Modeling turbulence structure. Chemical kinetics interaction in turbulent reactive flows. Finland.
Magnussen, B F. 1997. "Modeling turbulence structure. Chemical kinetics interaction in turbulent reactive flows." Finland.
@misc{etde_357223,
title = {Modeling turbulence structure. Chemical kinetics interaction in turbulent reactive flows}
author = {Magnussen, B F}
abstractNote = {The challenge of the mathematical modelling is to transfer basic physical knowledge into a mathematical formulation such that this knowledge can be utilized in computational simulation of practical problems. The combustion phenomena can be subdivided into a large set of interconnected phenomena like flow, turbulence, thermodynamics, chemical kinetics, radiation, extinction, ignition etc. Combustion in one application differs from combustion in another area by the relative importance of the various phenomena. The difference in fuel, geometry and operational conditions often causes the differences. The computer offers the opportunity to treat the individual phenomena and their interactions by models with wide operational domains. The relative magnitude of the various phenomena therefore becomes the consequence of operational conditions and geometry and need not to be specified on the basis of experience for the given problem. In mathematical modelling of turbulent combustion, one of the big challenges is how to treat the interaction between the chemical reactions and the fluid flow i.e. the turbulence. Different scientists adhere to different concepts like the laminar flamelet approach, the pdf approach of the Eddy Dissipation Concept. Each of these approaches offers different opportunities and problems. All these models are based on a sound physical basis, however none of these have general validity in taking into consideration all detail of the physical chemical interaction. The merits of the models can only be judged by their ability to reproduce physical reality and consequences of operational and geometric conditions in a combustion system. The presentation demonstrates and discusses the development of a coherent combustion technology for energy conversion and safety based on the Eddy Dissipation Concept by Magnussen. (author) 30 refs.}
place = {Finland}
year = {1997}
month = {Dec}
}