Sökning: WFRF:(Marklund Jesper) >
FLOW FIELD AROUND A...
FLOW FIELD AROUND AND IN A SAAB 9-3 CONVERTIBLE
-
- Marklund, Ture Jesper, 1970 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Löfdahl, Lennart, 1948 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
-
Danielsson, Håkan, 1945 (författare)
-
(creator_code:org_t)
- 2009
- 2009
- Engelska.
-
Ingår i: EUROMECH COLLOQUIUM 509,External aerodynamics of Railway Vehicles Trucks Buses and Cars, Berlin, Germany, March 24--25, 2009. ; , s. 144-157
- Relaterad länk:
-
https://research.cha...
Abstract
Ämnesord
Stäng
- The aerodynamic comfort in a four seated convertible with open roof is not as goodas many would like it to be. This job was initiated to look at what should be done to improvethis. The car used for this study was a Saab 9-3 convertible. Most of the work was done inCFD in the commercial code Fluent.The flow field in the cockpit was first of all analyzed and evaluated. The problem with convertiblesis the large recirculation bubble that occurs around the passenger compartment. Therear seat passengers are located in an area of this zone with very high wind speeds comparedto the front seat passengers. The flow field was analyzed by several pressure and velocityplots and a method to evaluate comfort grading was developed. The selected main variable tocompare cases was the mean velocity that the passengers head is exposed to. This was foundto be the most affecting parameter because it affects not only the dynamic pressure, but alsothe temperature discomfort. Geometry optimizations of windows, wind shield and wind blockershave been simulated and evaluated. Height and length of the side windows and a numberof different wind deflectors on the wind shield, plus wind blockers inside and behind cockpitwas tested. The results show that the biggest potential of improvement is the wind deflector onthe windshield and some of the wind blockers.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
Nyckelord
- Aerodynamics
- CFD
- Convertible
- Vehicle
Publikations- och innehållstyp
- kon (ämneskategori)
- ref (ämneskategori)