Turbulence-radiation interaction in confined combustion systems

Johannes W. Hartick; Andreas A. Neuber; Gerhard Früchtel; Egon P. Hassel; Johannes Janicka

doi:10.1007/BF02601416

Turbulence-radiation interaction in confined combustion systems

Johannes W. Hartick, Andreas A. Neuber, Gerhard Früchtel, Egon P. Hassel, Johannes Janicka

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

A new approach for modeling turbulence-radiation interaction is proposed. The formulation is based upon equations for statistical moments. Additional to the balance equations for the velocity and mixture fraction, equations for the mean, variance, covariance of heat release rate, and mixture fraction is solved. The coupling with the chemistry model is formulated by means of a two dimensional pdf of mixture fraction and heat release rate. The proposed approach is open for improvement by more sophisticated submodels. A natural gas fired combustion chamber is designed and constructed, and the temperature field measured by CARS spectroscopy. The main features of the modified combustion system are discussed. The comparison of experimental temperatures with the numerical simulation of the combustion system shows the good quality of our approach. The modeling of the two dimensional pdf is found to be most suitable for the hot region near the burner, where most radiation effects take place.

Original language	English
Pages (from-to)	67-74
Number of pages	8
Journal	Forschung im Ingenieurwesen
Volume	61
Issue number	3
DOIs	https://doi.org/10.1007/BF02601416
State	Published - Mar 1995

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title = "Turbulence-radiation interaction in confined combustion systems",

abstract = "A new approach for modeling turbulence-radiation interaction is proposed. The formulation is based upon equations for statistical moments. Additional to the balance equations for the velocity and mixture fraction, equations for the mean, variance, covariance of heat release rate, and mixture fraction is solved. The coupling with the chemistry model is formulated by means of a two dimensional pdf of mixture fraction and heat release rate. The proposed approach is open for improvement by more sophisticated submodels. A natural gas fired combustion chamber is designed and constructed, and the temperature field measured by CARS spectroscopy. The main features of the modified combustion system are discussed. The comparison of experimental temperatures with the numerical simulation of the combustion system shows the good quality of our approach. The modeling of the two dimensional pdf is found to be most suitable for the hot region near the burner, where most radiation effects take place.",

author = "Hartick, {Johannes W.} and Neuber, {Andreas A.} and Gerhard Fr{\"u}chtel and Hassel, {Egon P.} and Johannes Janicka",

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AU - Hartick, Johannes W.

AU - Neuber, Andreas A.

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AU - Janicka, Johannes

PY - 1995/3

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AB - A new approach for modeling turbulence-radiation interaction is proposed. The formulation is based upon equations for statistical moments. Additional to the balance equations for the velocity and mixture fraction, equations for the mean, variance, covariance of heat release rate, and mixture fraction is solved. The coupling with the chemistry model is formulated by means of a two dimensional pdf of mixture fraction and heat release rate. The proposed approach is open for improvement by more sophisticated submodels. A natural gas fired combustion chamber is designed and constructed, and the temperature field measured by CARS spectroscopy. The main features of the modified combustion system are discussed. The comparison of experimental temperatures with the numerical simulation of the combustion system shows the good quality of our approach. The modeling of the two dimensional pdf is found to be most suitable for the hot region near the burner, where most radiation effects take place.

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