Aerodynamics of high speed trains

Göttingen today: major scientific activities
- Development and application of CFD Tools (DLR TAU Code)*
- Development and application of advanced measurement techniques (PIV,
PSP, IPCT, microphone array, inflight measurement techniques,
nonstandard video techniques). Official status as “preferred supplier“ of
Airbus
- Aeronautics: civil and military transport aircraft, helicopters, guided
missiles, UCAV and MAV*
- Astronautics: launchers, reentry vehicles, satellites, microthrusters and
airbreathing propulsion (SCRAMJET)*
- Transportation: aerodynamics of high speed trains
- Annual budget (2009): 19 M€, 29% TPF
* together with AS-BS in Braunschweig
Computational fluid mechanics: DLR Tau code
Vortex wake of A380
Simulation of ground effect (A380)
Eurofighter
Crosswind situation (Next Generation Train)
EADS-M
Experimental Methods: Particle Image Velocimetry (PIV)
A400M propeller measurements in the Airbus low speed wind tunnel (Bremen)
ICE 2 embankment measurements
Experimental Methods: Pressure Sensitive Paint (PSP)
DLR Next
Generation
Train
EADS MAKO Trainer
Aerodynamics of high speed trains
Cross wind sensitivity
Head wave
Slipstream
Embankment (flying ballast)
Aerodynamic noise
CFD-Validation
TSI-standard certification (Technical Specifications for Interoperability)
Wind tunnel, towing tank and in situ measurements
Simulation Range of DNW-HDG compared to other
Low Speed Wind Tunnels
14
Re0.1
real high speed train
[106]
S
DNW-KKK
2.4x2.4 m2
1 bar
DNW-HDG
10
0.6x0.6 m2
QINETIQ-5m *)
ONERA-F1
8
5.0x4.2 m2
4.5x3.5 m2
DNW-LLF
1 bar
6
4
2
0
0.0
0
1 bar 0.1
0.2
50
0.3
100
0.4
VT=300K [m/s]
Mach
150
0.5
*) practical limits for large
transport aircraft model
9
High density wind tunnel Göttingen (HDG)
- max. pressure: 100 bar
- Test section 0.6 x 0.6m
(=
60 x 60m in reality)
- Forces and moments on
vehicles and infrastructure
ICE 3
TGV Reseau
TGV Thalys
ICE 2-STW
Cryogenic wind tunnel Cologne (KKK)
- LN2 cooling (-196°C)
- Test section 2.4 x 2.4 m
(=
18 x 18m in reality)
- Forces/moments and detailed
flow field analysis on vehicles
- Upgrade 2010: 2.7 Mio. €
SCART: Simulation Center for Aerodynamic Research in Transportation
High Performace Computer Cluster
Vehicle aerodynamics (external/internal)
HGF-investment: 2.3 Mio. €
Operative since 12/2010
Test facilities for tunnel simulation (TSG) und cross wind (SWG)
- Completion of DLR‘s facility
portfolio
- DLR: European leader in
railway aerodynamics
- Total investment: 3 Mio. €
- Operative since 10/2010
Göttingen today: major scientific activities
• Development and application of CFD Tools (DLR TAU Code)*
• Development and application of advanced measurement
techniques (PIV, PSP, IPCT, microphone array, inflight
measurement techniques, nonstandard video techniques).
Official status as “preferred supplier“ of Airbus
• Aeronautics: civil and military transport aircraft, helicopters,
guided missiles, UCAV and MAV*
• Astronautics: launchers, reentry vehicles, satellites,
microthrusters and airbreathing propulsion (SCRAMJET)*
• Transportation: aerodynamics of high speed trains
• Annual budget (2009): 19 M€, 29% TPF
* together with AS-BS in Braunschweig
Computational fluid mechanics: DLR Tau code
Vortex wake of A380
Simulation of ground effect (A380)
Eurofighter
Crosswind situation (Next Generation Train)
EADS-M
Experimental Methods: Particle Image Velocimetry (PIV)
A400M propeller measurements in the Airbus low speed wind tunnel (Bremen)
ICE 2 embankment measurements
Experimental Methods: Pressure Sensitive Paint (PSP)
DLR Next
Generation
Train
EADS MAKO Trainer
Aerodynamics of high speed trains
Cross wind sensitivity
Head wave
Slipstream
Embankment (flying ballast)
Aerodynamic noise
CFD-Validation
TSI-standard certification (Technical Specifications for Interoperability)
Wind tunnel, towing tank and in situ measurements
Simulation Range of DNW-HDG compared to other
Low Speed Wind Tunnels
14
Re0.1
real high speed train
[106]
S
DNW-KKK
2.4x2.4 m2
1 bar
DNW-HDG
10
0.6x0.6 m2
QINETIQ-5m *)
ONERA-F1
8
5.0x4.2 m2
4.5x3.5 m2
DNW-LLF
1 bar
6
4
2
0
0.0
0
36
1 bar 0.1
0.2
50
0.3
100
0.4
VT=300K [m/s]
Mach
150
0.5
*) practical limits for large
transport aircraft model
High density wind tunnel Göttingen (HDG)
•
•
•
max. pressure: 100 bar
Test section 0.6 x 0.6m (=
60 x 60m in reality)
Forces and moments on
vehicles and infrastructure
ICE 3
TGV Reseau
TGV Thalys
ICE 2-STW
Cryogenic wind tunnel Cologne (KKK)
•
•
•
•
LN2 cooling (-196°C)
Test section 2.4 x 2.4 m (=
18 x 18m in reality)
Forces/moments and
detailed flow field analysis
on vehicles
Upgrade 2010: 2.7 Mio. €
SCART: Simulation Center for Aerodynamic Research in Transportation
High Performace Computer Cluster
Vehicle aerodynamics (external/internal)
HGF-investment: 2.3 Mio. €
Operative since 12/2010
Test facilities for tunnel simulation (TSG) und cross wind (SWG)
• Completion of DLR‘s
facility portfolio
• DLR: European leader in
railway aerodynamics
• Total investment: 3 Mio. €
• Operative since 10/2010