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Snow Contamination ...
Snow Contamination of Simplified Automotive Bluff Bodies: A Comparison between Wind Tunnel Experiments and Numerical Modeling
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- Eidevåg, Tobias, 1987 (författare)
- Chalmers university of technology, Gothenburg, Sweden ; Volvo Car Corporation,Volvo Cars,Chalmers tekniska högskola,Chalmers University of Technology
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- Eng, Matthias (författare)
- Volvo Car Corporation,Volvo Cars
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- Kallin, David (författare)
- Volvo Car Corporation,Volvo Cars
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- Casselgren, Johan, 1977- (författare)
- Luleå tekniska universitet,Strömningslära och experimentell mekanik,Luleå tekniska universitet (LTU),Luleå University of Technology (LTU)
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- Bharadhwaj, Yashas (författare)
- Chalmers university of technology, Gothenburg, Sweden,Chalmers tekniska högskola,Chalmers University of Technology
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- Bangalore Narahari, Tejas Sharma (författare)
- Chalmers university of technology, Gothenburg, Sweden,Chalmers tekniska högskola,Chalmers University of Technology
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- Rasmuson, Anders, 1951 (författare)
- Chalmers university of technology, Gothenburg, Sweden,Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2022-03-29
- 2022
- Engelska.
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Serie: SAE Technical Paper, 0148-7191 2688-3627
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Ingår i: SAE Technical Paper Series. - 400 Commonwealth Drive, Warrendale, PA, United States : SAE International. - 2641-9637 .- 0148-7191 .- 2688-3627.
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.4...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- We describe experiments and numerical modeling of snow surface contamination on two simplified automotive bluff bodies: The Ahmed body and a wedge. The purpose was twofold: 1) To obtain well defined experimental results of snow contamination on simple geometries; 2) To propose a numerical modeling approach for snow contamination. The experiments were performed in a climatic wind tunnel using a snow cannon at −15 °C and the results show that the snow accumulation depends on the aerodynamics of the studied bluff bodies. Snow accumulates on surfaces in proximity to the aerodynamic wakes of the bodies and characteristic snow patterns are obtained on side surfaces. The numerical modeling approach consisted of an aerodynamic setup coupled with Lagrangian particle tracking. Particles were determined to adhere or rebound depending on an adhesion model combined with a resuspension criterion. The adhesion model was based on adhesive-elastic contact theory and the resuspension criterion is derived from the balance between the aerodynamic forces acting on a particle and the critical force for onset of resuspension. The results show that the numerical method can predict certain characteristic snow patterns obtained from the experiments and we also highlight deviations obtained between experimental and simulation results. The simulation results show that the snow accumulation patterns on a bluff body will depend on the smallest ice particles in a snow sample which implies that samples with larger ice particle (for example natural snow) could produce different snow patterns than the fine machine-made snow used in this study.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Farkostteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Vehicle Engineering (hsv//eng)
Nyckelord
- Adhesion
- Adhesives
- Aerodynamics
- Contamination
- Numerical methods
- Numerical models
- Wind tunnels
- Ahmed body
- Automotives
- Bluff body
- Ice particles
- Numerical modeling approach
- Re-suspension
- Snow accumulation
- Snow patterns
- Surface contaminations
- Wind tunnel experiment
- Snow
- Experimentell mekanik
- Experimental Mechanics
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
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