التفاصيل البيبلوغرافية
| العنوان: |
Numerical Investigation of an Innovative Windbreak Design with Jet Flow Generated by an Air Curtain for Half-pipe Skiing. |
| المؤلفون: |
Liu, K., Liu, F., Liu, Q. |
| المصدر: |
Journal of Applied Fluid Mechanics; Jun2024, Vol. 17 Issue 6, p1158-1170, 13p |
| مصطلحات موضوعية: |
JETS (Fluid dynamics), AIR flow, WINDBREAKS, shelterbelts, etc., CROSS-flow (Aerodynamics), SKIING |
| مستخلص: |
The sport of half-pipe skiing, characterized by its dynamic maneuvers and highspeed descents, often faces challenges posed by unpredictable wind conditions. To address this, an advanced wind-blocking system incorporating an air curtain capable of generating a jet flow is proposed. This pioneering design offers a dual advantage: the system can significantly reduce the windbreak size in the vertical dimension while maintaining a satisfactory wind-blocking effect. A comprehensive study is conducted to analyze the effects of the height of the windbreak and the jet emission angle from the air curtain. When the jet speed is 40 m/s, a 50° emission angle and a 2 m height of the windbreak result in an optimal wind-blocking effect. Furthermore, delving deeper to understand the underpinnings of this phenomenon, we discovered that a counterrotating vortex pair, which forms in the presence of this jet under crossflow conditions, plays a pivotal role in augmenting the wind-blocking capabilities of the system. [ABSTRACT FROM AUTHOR] |
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