Coupled 3D evolutionary reconstruction technique for multi-simultaneous measurements

Unterberger, Andreas; Martins, Fabio J. W. A.; Mohri, Khadijeh

doi:10.1016/j.fuel.2023.128336

Fuel

2023

DOI: 10.1016/j.fuel.2023.128336

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Coupled 3D evolutionary reconstruction technique for multi-simultaneous measurements

Andreas Unterberger

Fabio J. W. A. Martins

Khadijeh Mohri

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Cited by 3 publications

References 39 publications

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Relation Between 3 and 2D Wrinkling Factors in Turbulent Premixed Flames

Klein,

Chakraborty

2024

Flow Turbulence Combust

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The magnitude of the wrinkled flame surface area in turbulent premixed flames divided by its projection in the direction of flame propagation, known as the wrinkling factor, is a fundamental quantity for the purpose of analysis and modelling premixed combustion, for example, in flame surface density based modelling approaches. According to Damköhler’s hypothesis it is closely related to the turbulent burning velocity, an equally important measure of the overall burning rate of a wrinkled flame. Three-dimensional evaluation of the area of highly wrinkled flames remains difficult and experiments are often based on planar measurements. As a result of this, model development and calibration require an extension of 2D measurements to 3D data. Different relations between 2D and 3D wrinkling factors are known in literature and will be discussed in the present work using a variety of direct numerical simulation (DNS) databases combined with theoretical arguments. It is shown, based on an earlier analysis, that the isotropic distribution of the surface area weighted probability density function of the angle between the normal vectors on the measurement plane and the flame surface, provides a very simple relationship, stating that the ratio between 3D and 2D flame surface area is given by $$4/\pi $$ 4 / π , which is found to be in excellent agreement with DNS data of statistically planar turbulent premixed flames.

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Relation Between 3 and 2D Wrinkling Factors in Turbulent Premixed Flames

Klein,

Chakraborty

2024

Flow Turbulence Combust

View full text Add to dashboard Cite

show abstract

Investigation of the three-dimensional structure of low-swirl methane-hydrogen flames with multiple UV cameras-based OH* chemiluminescence tomography

Zhou,

Xu,

Zhang

et al. 2024

International Journal of Hydrogen Energy

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Analyzing 3D fields of refractive index, emission and temperature in spray-flame nanoparticle synthesis via tomographic imaging using multi-simultaneous measurements (TIMes)

Martins,

Foo,

Unterberger

et al. 2023

Applications in Energy and Combustion Science

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Coupled 3D evolutionary reconstruction technique for multi-simultaneous measurements

Cited by 3 publications

References 39 publications

Relation Between 3 and 2D Wrinkling Factors in Turbulent Premixed Flames

Relation Between 3 and 2D Wrinkling Factors in Turbulent Premixed Flames

Investigation of the three-dimensional structure of low-swirl methane-hydrogen flames with multiple UV cameras-based OH* chemiluminescence tomography

Analyzing 3D fields of refractive index, emission and temperature in spray-flame nanoparticle synthesis via tomographic imaging using multi-simultaneous measurements (TIMes)

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