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Pressure evaluation of spray induced flow by means of URANS and time-resolved Stereo Particle Image Velocimetry

Kling, Nils H. ORCID iD icon 1; Opfer, Lars; Kriegseis, Jochen ORCID iD icon 1; Rogler, Philipp
1 Institut für Strömungsmechanik (ISTM), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

In the present work, pressure distributions of spray-induced flow are obtained by means of time-resolved stereo Particle Image Velocimetry. Revealing an extensive insight in the nature of spray transport, the characterization of pressure, material acceleration and instantaneous velocity provides a comprehensive description of spray induced flow dynamics. The pressure evaluation is conducted by an extended formulation based on the Unsteady Reynolds Averaged Navier-Stokes Equations and ensemble averaging. Assuming adiabatic flow and perfect gas the effect of compressibility is taken into account. In order to achieve phase discrimination and image contrast enhancement, optical filtering is applied by doping the gaseous phase with fluorescent tracer particles. The measurements are performed with gasoline direct injection 2-hole research samples. Demonstrating the capacity of pressure evaluation, pressure fields of spray-induced flow are successfully obtained. The investigations reveal characteristic flow patterns in accordance to air entrainment and fluid displacement. In respect to single spray plumes, high pressure regions are identified in front of the spray and the wake flow, whereas low pressure regions are present at central position. ... mehr


Postprint §
DOI: 10.5445/IR/1000150134
Veröffentlicht am 06.09.2022
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Strömungsmechanik (ISTM)
Publikationstyp Proceedingsbeitrag
Publikationsdatum 18.07.2018
Sprache Englisch
Identifikator KITopen-ID: 1000150134
Erschienen in 19th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics (LXLASER2018), Lisbon, P, July 16-17, 2018
Veranstaltung 19th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics (LXLASER 2018), Lissabon, Portugal, 16.07.2018 – 19.07.2018
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