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Analysis of cyclic Variability in Motored IC-Engines by Means of Detailed Comparison of Highly-Resolved Experimental and Numerical Data

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.1140
pages 1094-1103

M. Baumann
Institute of Energy and Power Plant Technology, Darmstadt University of Technology, Petersenstr. 30, D-64287, Germany

Francesca di Mare
Institute of Propulsion Technology, German Aerospace Center (DLR), Linder Höhe, 51147 Köln, Germany

E. Baum
Institute Reactive Flows and Diagnostics, Center of Smart Interfaces, Darmstadt University of Technology, Petersenstr. 32, D-64287, Germany

B. Peterson
Institute Reactive Flows and Diagnostics, Center of Smart Interfaces, Darmstadt University of Technology, Petersenstr. 32, D-64287, Germany

B. Bohm
Technische Universität Darmstadt, Department of Mechanical Engineering, Center of Smart Interfaces, Inst. Reactive Flows and Diagnostics, Petersenstr. 32, 64287Darmstadt

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

Sinopsis

This paper describes the numerical investigation of cyclic variability of a motored 4-stroke, single-cylinder engine. Quantitative and qualitative comparison between experimental and numerical data of the velocity field have been performed and discussed at selected crank angle. Multi-cycle Large Eddy Simulation (LES) was carried out to examine higher statistical velocity moments providing an insight into the physical processes that lead to anomalous flow events.

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