scholarly journals Aerodynamic effect of icing/rain impacts on super-hydrophobic surfaces

2018 ◽  
Author(s):  
N. Okulova ◽  
R. Taboryski ◽  
J. N. Sørensen ◽  
S. I. Shtork ◽  
V. L. Okulov
Keyword(s):  
Hydrophobic Surfaces ◽  
Aerodynamic Effect

Evaluation of the influence of wind speed and angle of attack on the aerodynamic effect of wind turbine blades

2017 ◽  
Author(s):  
Salete Alves ◽  
Luiz Guilherme Vieira Meira de Souza ◽  
Edália Azevedo de Faria ◽  
Maria Thereza dos Santos Silva ◽  
Ranaildo Silva
Keyword(s):  
Wind Speed ◽  
Wind Turbine ◽  
Turbine Blades ◽  
Angle Of Attack ◽  
Wind Turbine Blades ◽  
Aerodynamic Effect

Evaporation of droplets capable of bearing viruses airborne and on hydrophobic surfaces

2021 ◽  
Vol 129 (2) ◽  
pp. 024703 ◽  
Author(s):  
Md Syam Hasan ◽  
Konstantin Sobolev ◽  
Michael Nosonovsky
Keyword(s):  
Hydrophobic Surfaces ◽  
Evaporation Of Droplets

scholarly journals Aerodynamic analysis of uphill drafting in cycling

2021 ◽  
Vol 24 (1) ◽  
Author(s):  
T. van Druenen ◽  
B. Blocken
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
High Speed ◽  
Scientific Literature ◽  
Sensitivity Analyses ◽  
Air Resistance ◽  
Wind Tunnel Measurements ◽  
Aerodynamic Effect ◽  
Computational Fluid Dynamics Simulations ◽  
Dynamics Simulations

AbstractSome teams aiming for victory in a mountain stage in cycling take control in the uphill sections of the stage. While drafting, the team imposes a high speed at the front of the peloton defending their team leader from opponent’s attacks. Drafting is a well-known strategy on flat or descending sections and has been studied before in this context. However, there are no systematic and extensive studies in the scientific literature on the aerodynamic effect of uphill drafting. Some studies even suggested that for gradients above 7.2% the speeds drop to 17 km/h and the air resistance can be neglected. In this paper, uphill drafting is analyzed and quantified by means of drag reductions and power reductions obtained by computational fluid dynamics simulations validated with wind tunnel measurements. It is shown that even for gradients above 7.2%, drafting can yield substantial benefits. Drafting allows cyclists to save over 7% of power on a slope of 7.5% at a speed of 6 m/s. At a speed of 8 m/s, this reduction can exceed 16%. Sensitivity analyses indicate that significant power savings can be achieved, also with varying bicycle, cyclist, road and environmental characteristics.

Wetting of Structured Hydrophobic Surfaces by Water Droplets

Langmuir ◽  
2005 ◽  
Vol 21 (26) ◽  
pp. 12235-12243 ◽  
Author(s):  
Oskar Werner ◽  
Lars Wågberg ◽  
Tom Lindström
Keyword(s):  
Water Droplets ◽  
Hydrophobic Surfaces

Bubble Movement on Inclined Hydrophobic Surfaces

Langmuir ◽  
2017 ◽  
Vol 33 (43) ◽  
pp. 12016-12027 ◽  
Author(s):  
Ali Kibar ◽  
Ridvan Ozbay ◽  
Mohammad Amin Sarshar ◽  
Yong Tae Kang ◽  
Chang-Hwan Choi
Keyword(s):  
Hydrophobic Surfaces ◽  
Bubble Movement
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