Results 81 to 90 of about 1,669 (212)

Antifouling Properties of Liquid‐Infused Riblets Fabricated by Direct Contactless Microfabrication

, 2021
The fabrication of riblets and surfaces structured with aligned grooves, by direct contactless microfabrication (DCM), and the ability of the riblets to function as lubricant-infused surfaces, is reported.
Mitchell S. Quinn, Renzo A. Fenati, Henry C. Bilinsky, Neto, Chiara, Quinn, Mitchell S., Fenati, Renzo A., Chiara Neto, Bilinksy, Henry C.   +7 more
core   +1 more source

Drag Reduction Due to Riblets on a GAW(2) Airfoil [PDF]

, 1999
THE study of turbulent drag reduction by use of riblets has been an area of significant research during the past de cade. Riblets with symmetric v grooves with adhesive-backed film manufactured the 3M Company (U.S.) have been widely used in earlier ...
Subaschandar, N, Rajeev , Kumar, Sundaram, S   +2 more
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Aerothermal Investigation of the Effect of Endwall Structures on Radial Turbine Heat Losses

Energies
This paper presents a detailed numerical investigation of the effect of hub-mounted riblets on the thermal and aerodynamic performance of a radial turbine rotor. While prior studies have shown that riblets reduce wall shear stress and improve aerodynamic
M. A. Khader, A. I. Sayma, Jafar Al-Zaili, Mohsen Ghavami, Hongwei Wu   +4 more
doaj   +1 more source

Riblets for Stars and Stripes

, 1987
Stars and Stripes racing yacht brought the American's Cup back to the United States. Originating from NASA's drag reduction technology, the boats "secret weapon" was that the hull's underside was coated with riblets.

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Application of riblets on turbine blade endwall secondary flow control

, 2014
Within the past ten years, significant improvements have been achieved in the laser manufacturing process. It is feasible now to obtain various small-scale surface features (such as dimples, riblets, grooves, etc.) with the current manufacturing ...
Jiang, H., H. Jiang, Q. Zhang, Qi, H., Zhang, Q., Miao, X., X. Miao, H. Qi   +7 more
core   +1 more source

Investigation of pressure variation of airflow over riblets

, 2019
In the globalising world with growing demand of cheaper and more efficient mode of travelling. A commonly discussed solution is reducing the fluid drag experienced by everyday objects.
Tan, Keith Jie Wei
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Modelling channel flow over riblets: Calculating the energy amplification

, 2012
Riblets have been considered as a passive method for drag reduction. Riblets are structures on a surface that run parallel to one another, which are aligned longitudinally to the flow.
Duncan, S, Aditya Kasliwal, Stephen Duncan, Kasliwal, A, Antonis Papachristodoulou, Papachristodoulou, A   +5 more
core   +1 more source

Numerical studies of riblets in duct flow

, 2019
The present study investigates the drag reduction capabilities of semi-circular riblets lined along the bottom surface of a square duct. The use of semi-circular riblets is inspired from studies on wavy surfaces in channels to emulate skin folds on ...
Chua, Yu Zheng
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Wall-Pressure Fluctuations of Modified Turbulent Boundary Layer with Riblets

, 2016
An experimental investigation was carried out to study the response of a turbulent pressure drop fluctuations to longitudinal groove riblets, involved two configurations being triangular and spaced triangular grooves with height 600, 800, 1000 μm and ...
Z. Hassan, Wafaa K. Mahmood, Hassan D. Mahammed, Hayder A. Abdulbari   +3 more
core   +1 more source

Effects of Materials and Riblets on Erosion Mitigation Induced by Multiple Collapses of Cavitation Bubbles

Applied Sciences
The current research investigates the effects of materials and riblets on cavitation-induced erosion morphology, depth, and cross-sectional area through experimental approaches. To achieve these aims, the erosion of pure aluminum (1xxxAl or Al) and alpha
Ebrahim Kadivar, Sasan Rezaee, Udo Löschner, Ould el Moctar   +3 more
doaj   +1 more source