Characterisation and Design of Direct Numerical Simulations of Turbulent Statistically Planar Flames

Andrej Sternin; Daniel Martinez; Daniel Sternin; Oskar Haidn; Martin Tajmar

doi:10.3390/aerospace9100530

Characterisation and Design of Direct Numerical Simulations of Turbulent Statistically Planar Flames

Andrej Sternin, Daniel Martinez, Daniel Sternin, Oskar Haidn, Martin Tajmar

Chair of Space Mobility and Propulsion

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

3 Scopus citations

Abstract

This work aims to provide support for the design of reliable DNSs for statistically planar flames. Improved simulation design strategies are developed. Therefore, design criteria for the simulative domain are discussed. The gained mathematical relations for all of the relevant physical quantities were channelled into a deterministic calculation strategy for mesh features. To choose design parameter values within the mathematical formulations, guidelines were formulated. For less controllable variables, namely the viscosity and Prandtl number, a measurement technique was developed. A new determination strategy to determine characteristic points within the flame front was conducted. In order to present and compare cases with different Prandtl numbers, normalisation of the x-axis of the regime diagram was suggested.

Original language	English
Article number	530
Journal	Aerospace
Volume	9
Issue number	10
DOIs	https://doi.org/10.3390/aerospace9100530
State	Published - Oct 2022

Keywords

DNS
combustion regime
flame brush
flame viscosity
premixed flame
turbulent combustion

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10.3390/aerospace9100530

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title = "Characterisation and Design of Direct Numerical Simulations of Turbulent Statistically Planar Flames",

abstract = "This work aims to provide support for the design of reliable DNSs for statistically planar flames. Improved simulation design strategies are developed. Therefore, design criteria for the simulative domain are discussed. The gained mathematical relations for all of the relevant physical quantities were channelled into a deterministic calculation strategy for mesh features. To choose design parameter values within the mathematical formulations, guidelines were formulated. For less controllable variables, namely the viscosity and Prandtl number, a measurement technique was developed. A new determination strategy to determine characteristic points within the flame front was conducted. In order to present and compare cases with different Prandtl numbers, normalisation of the x-axis of the regime diagram was suggested.",

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AU - Sternin, Andrej

AU - Martinez, Daniel

AU - Sternin, Daniel

AU - Haidn, Oskar

AU - Tajmar, Martin

PY - 2022/10

Y1 - 2022/10

N2 - This work aims to provide support for the design of reliable DNSs for statistically planar flames. Improved simulation design strategies are developed. Therefore, design criteria for the simulative domain are discussed. The gained mathematical relations for all of the relevant physical quantities were channelled into a deterministic calculation strategy for mesh features. To choose design parameter values within the mathematical formulations, guidelines were formulated. For less controllable variables, namely the viscosity and Prandtl number, a measurement technique was developed. A new determination strategy to determine characteristic points within the flame front was conducted. In order to present and compare cases with different Prandtl numbers, normalisation of the x-axis of the regime diagram was suggested.

AB - This work aims to provide support for the design of reliable DNSs for statistically planar flames. Improved simulation design strategies are developed. Therefore, design criteria for the simulative domain are discussed. The gained mathematical relations for all of the relevant physical quantities were channelled into a deterministic calculation strategy for mesh features. To choose design parameter values within the mathematical formulations, guidelines were formulated. For less controllable variables, namely the viscosity and Prandtl number, a measurement technique was developed. A new determination strategy to determine characteristic points within the flame front was conducted. In order to present and compare cases with different Prandtl numbers, normalisation of the x-axis of the regime diagram was suggested.

KW - DNS

KW - combustion regime

KW - flame brush

KW - flame viscosity

KW - premixed flame

KW - turbulent combustion

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ER -

Characterisation and Design of Direct Numerical Simulations of Turbulent Statistically Planar Flames

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Keywords

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