Description AC2-10: Difference between revisions
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*for the '''validation of CFD''' simulations especially for large eddy simulations (LES). | *for the '''validation of CFD''' simulations especially for large eddy simulations (LES). | ||
== | ==Relevance to industrial sector== | ||
==Design or assessment parameters== | |||
==Engine test bench== | |||
==Engine== | |||
==Flow physics and Fluid Dynamics Data== | |||
---- | ---- | ||
{{ACContribs | {{ACContribs |
Revision as of 14:04, 9 October 2018
Internal combustion engine flows for motored operation
Application Challenge AC2-10 © copyright ERCOFTAC 2024
Abbreviations
ALE | Arbitrary Lagrangian-Eulerian |
aTDC | after top dead center |
bTDC | before top dead center |
BDC | bottom dead center |
CA | crank angle |
CAD | crank angle degreeCCD charge-coupled device |
CCV | cycle-to-cycle variation |
CDS | central differencing scheme |
CFD | computational fluid dynamics |
CFL | Courant-Friedrichs-Lewy |
ENO | Essentially Non-Oscillatory |
ERG | exhaust-gas-recirculation |
EVC | exhaust valve closing |
EVO | exhaust valve opening |
HS-PIV | high speed particle image velocimetry |
IC | internal combustion |
IVC | intake valve closing |
IVO | intake valve opening |
LES | large eddy simulation |
MRV | magnetic resonance velocimetry |
PIV | particle image velocimetry |
POV | field-of-view |
QSOU | quasi-second-order upwind |
QUICK | Quadratic Upwind Interpolation for Convective Kinematics |
RANS | Reynolds-averaged Navier-Stokes |
RMS | root mean square |
RPM | rounds per minute |
SAS | scale-adaptive simulation |
SRS | scale-resolving simulation |
SST | shear stress transport |
TDC | top dead center |
TUBF | Technische Universität Bergakademie Freiberg |
TUD | Technische Universität Darmstadt |
TVD | total variation diminishing |
UDE | Universität Duisburg-Essen |
URANS | unsteady Reynolds-averaged Navier-Stokes |
WG | wall-guided |
Description
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).
Relevance to industrial sector
Design or assessment parameters
Engine test bench
Engine
Flow physics and Fluid Dynamics Data
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