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Communication Dans Un Congrès Année : 2017

Combined planar velocity and scalar measurements for reacting flow investigations

Résumé

The understanding of the combustion-aerodynamics interaction is a challenging aspect of investigation of the reacting flows due to the large span of spatial and temporal scales involved. In the past, despite intensive use of high resolution pointwise measurement techniques to obtain statistical information about the flow properties, temperature field, species concentration..., it had been clearly shown that the unsteady 3D characteristic of turbulent flow and flame interactions makes difficult detailed analysis from averaged measurements. These combustion-aerodynamics interactions induced complex correlation between physical properties which makes simultaneous measurements useful in turbulent combustion research. These aspects have motivated the scientists in the combustion community to consider planar laser diagnostics as soon as the early stage of their availability, but also to contribute significantly to their developments. The interest of 2D measurement to investigate reacting flows has been clearly demonstrated in numerous academic and industrial configurations. One supplementary potential of the laser diagnostics, and then the 2D laser diagnostics is their capability to be combined together. Then more recently, in order to investigate in more details the combustion-aerodynamics interactions, velocity measurements by PIV is often associated with other optical techniques (LIF, LII, flame emission...) of scalar measurement. The simultaneous measurement of two quantities have opened for few years a wide field of investigation, especially by allowing to performed conditioned measurements. The purpose of the present paper is to review the major kinds of combination of 2D velocity measurement with scalar measurements to investigate reacting flows and to show the potential of the laser diagnostic coupling for performing conditioned measurements need for advanced data processing. All these aspects will be illustrated by a selection of examples of advanced data processing specific to the simultaneous measurements for reacting flow.
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Dates et versions

hal-01852161 , version 1 (01-08-2018)

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  • HAL Id : hal-01852161 , version 1

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Bertrand Lecordier. Combined planar velocity and scalar measurements for reacting flow investigations. The 12th International Symposium on Particle Image Velocimetry, Jun 2017, Busan, South Korea. ⟨hal-01852161⟩
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