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ISSN オンライン: 2642-0554

THE EFFECT OF SWIRLING NUMBER VARIATION ON TURBULENT TRANSPORT AND MIXING PROCESSES IN SWIRLING RECIRCULATING FLOWS: EXPERIMENTAL AND NUMERICAL INVESTIGATIONS

Christoph Schneider
Chair of Energy and Powerplant Technology, Department of Mechanical Engineering, Darmstadt University of Technology, Petersenstr. 30, 64287 Darmstadt, Germany

Stefan Repp
Airbus Deutschland GmbH, Environmental Control Systems, Kreetslag 10, 21129 Hamburg, Germany

Amsini Sadiki
Institute of Energy and Power Plant Technology, Technische Universität Darmstadt, 64287 Darmstadt, Germany

Andreas Dreizler
Institute for Reactive Flows and Diagnostics, Center of Smart Interface Department of Mechanical Engineering, TU Darmstadt, Petersenstrasse 32, 64287 Darmstadt

Johannes Janicka
Institute of Energy and Power Plant Technology, TU Darmstadt, Jovanka-Bontschits-Strasse 2, 64287 Darmstadt, Germany; Darmstadt Graduate School of Excellence Energy Science and Engineering, TU Darmstadt, Jovanka-Bontschits-Strasse 2, 64287 Darmstadt, Germany

要約

In this work, confined swirling reactive as well as non-reactive recirculating flows are analyzed experimentally and numerically. Extensive turbulent flow field measurements for the determination of the velocity components and the Reynolds stresses using 2D-Laser-Doppler Velocimetry are presented. In addition, selected results of Raman measurements for the simultaneous determination of temperature, mixture fraction and major species concentrations performed by Meier et al. (2000) at an identical setup are included for a complete comparisation of scalar as well as flow fields to numerical calculations based on RANS-modelling approach. Such results can be used to improve the understanding of the effects of swirl number variation on relevant transport and mixing processes and to provide an outstanding data base for subsequent development and validation of turbulence, mixing and turbulence-chemistry interaction models.