Description AC2-10: Difference between revisions
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|aTDC||after top dead center | |aTDC||after top dead center | ||
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bTDC||before top dead center | |||
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BDC||bottom dead center | |||
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CA||crank angle | |||
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CAD||crank angle degreeCCD charge-coupled device | |||
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CCV||cycle-to-cycle variation | |||
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CDS||central differencing scheme | |||
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CFD||computational fluid dynamics | |||
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CFL||Courant-Friedrichs-Lewy | |||
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ENO||Essentially Non-Oscillatory | |||
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ERG||exhaust-gas-recirculation | |||
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EVC||exhaust valve closing | |||
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EVO||exhaust valve opening | |||
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HS-PIV||high speed particle image velocimetry | |||
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IC||internal combustion | |||
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IVC||intake valve closing | |||
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IVO||intake valve opening | |||
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LES||large eddy simulation | |||
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MRV||magnetic resonance velocimetry | |||
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PIV||particle image velocimetry | |||
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POV||field-of-view | |||
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QSOU||quasi-second-order upwind | |||
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QUICK||Quadratic Upwind Interpolation for Convective Kinematics | |||
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RANS||Reynolds-averaged Navier-Stokes | |||
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RMS||root mean square | |||
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RPM||rounds per minute | |||
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SAS||scale-adaptive simulation | |||
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SRS||scale-resolving simulation | |||
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SST||shear stress transport | |||
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TDC||top dead center | |||
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TUBF||Technische Universität Bergakademie Freiberg | |||
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TUD||Technische Universität Darmstadt | |||
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TVD||total variation diminishing | |||
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UDE||Universität Duisburg-Essen | |||
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URANS||unsteady Reynolds-averaged Navier-Stokes | |||
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WG||wall-guided | |||
|} | |} | ||
==Introduction== | ==Introduction== |
Revision as of 13:47, 9 October 2018
Internal combustion engine flows for motored operation
Application Challenge AC2-10 © copyright ERCOFTAC 2024
Abbreviations
Mesh | Strut | Guide vane | Runner | Draft tube | Total |
---|---|---|---|---|---|
High-Reynolds Coarse | 3 × 105 | 7 × 105 | 7.6 × 105 | 1 × 106 | 2.76 × 106 |
High-Reynolds Fine | 3 × 105 | 8 × 105 | 1.1 × 106 | 2.85 × 106 | 5.05 × 106 |
Low-Reynolds Coarse | — | 9.3 × 105 | 1.13 × 106 | 1.35 × 106 | 3.41 × 106 |
Low-Reynolds Fine | — | 9.3 × 105 | 1.13 × 106 | 2.66 × 106 | 4.72 × 106 |
ALE | Arbitrary Lagrangian-Eulerian |
aTDC | after top dead center |
Introduction
The TU Darmstadt engine is an optically accessible single cylinder spark-ignition direct injection engine. It is embedded in an especially designed test bench to provide well characterized boundary conditions and reproducible engine operation. A reproducible engine operation is needed to characterize the variety of in-cylinder processes and is a prerequisite for any comparison of experiments and simulations. The in-cylinder processes are characterized using advanced laser-diagnostics to provide measurements at high spatial and temporal resolutions. The aim of this effort is, to build up a comprehensive data set
- to give insights into the underlying physics for a better understanding of the relevant in-cylinder processes and
- for the validation of CFD simulations especially for large eddy simulations (LES).
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Contributed by: Carl Philip Ding,Rene Honza, Elias Baum, Andreas Dreizler — Fachgebiet Reaktive Strömungen und Messtechnik (RSM),Technische Universität Darmstadt, Germany
Contributed by: Brian Peterson — School of Engineering, University of Edinburgh, Scotland UK
Contributed by: Chao He , Wibke Leudesdorff, Guido Kuenne, Benjamin Böhm, Amsini Sadiki, Johannes Janicka — Fachgebiet Energie und Kraftwerkstechnik (EKT), Technische Universität Darmstadt, Germany
Contributed by: Peter Janas, Andreas Kempf — Institut für Verbrennung und Gasdynamik (IVG), Lehrstuhl für Fluiddynamik, Universität Duisburg-Essen, Germany
Contributed by: Stefan Buhl, Christian Hasse — Fachgebiet Simulation reaktiver Thermo-Fluid Systeme (STFS), Technische Universität Darmstadt, Germany; former: Professur Numerische Thermofluiddynamik (NTFD), Technische Universität Bergakademie Freiberg, Germany
© copyright ERCOFTAC 2018