Results 21 to 30 of about 177 (133)
Applied Bionics and Biomechanics, 2020 Unlike conventional pneumatic tires, the nonpneumatic tires (NPT) are explosion proof and simple to maintain and provide low rolling resistance. At high vehicle speeds, however, the complex airflow produced by the open flexible-spoke structure of NPT ...
Haichao Zhou +4 more
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Numerical and experimental investigations on drag-reducing effects of riblets
Engineering Applications of Computational Fluid Mechanics, 2021 The numerical simulation and force measurement experiment are conducted in this work. The direct numerical simulation method with high-order schemes is performed to resolve the incompressible turbulent flow over riblets.
Chaoqun Li, Shuo Tang, Yi Li, Zihai Geng
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Mitigation of turbulent noise sources by riblets
Journal of Sound and Vibration, 2022 Copyright © 2022 The Authors. A feasibility study is presented on the application of riblets to suppress turbulent pressure sources leading to a reduction in the generation of aerofoil self-noise. It is shown that riblets can reduce skin friction as well as the turbulence intensity inside the boundary layer. In addition, near-wall turbulence structures
Chioma Muhammad, Tze Pei Chong
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Fish Scales: A Multifunctional Biomaterial from Nature
ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 5, September 2026.Fish scales demonstrate nature's solution to impact protection through overlapping multilayered architecture. This biological design combines mineralized surfaces with collagen networks to achieve both flexibility and fracture resistance. The structural principles inspire advanced protective materials and biomedical implants, where damage tolerance ...
Liyao Dong, Xiaojie Sun, Xiguang Chen
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KARAKTERISTIK POMPA SENTRIFUGAL DENGAN VARIASI PENAMBAHAN JUMLAH FIN PADA BILAH TIPE SEMI OPEN
Otopro, 2019 Impeller merupakan salah satu bagian terpenting dari pompa sentrifugal yang dapat mempengaruhi performa pompa. Hal yang perlu dilihat dari performa pompa adalah nilai efisiensi, NPSH, Head dan kebisingan dari pompa. Variasi riblet dengaan menambahkan fin
Ahmad kurniawan
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Acta Psychiatrica Scandinavica, Volume 153, Issue 6, Page 610-626, June 2026.ABSTRACT Introduction Suicide risk is markedly elevated following presentation after self‐harm, yet the evidence base for interventions initiated in the immediate post‐presentation period has not been synthesized with specific attention to this high‐risk window. Clarifying which early interventions may reduce adverse outcomes is essential for informing
Guilherme Pimenta Roncete +7 more
wiley +1 more source
Using Bio-Replicated Forming Technologies to Fabricate Shark-Skin Surface
Brazilian Archives of Biology and Technology, 2018 Shark-skin surfaces show the non-smoothness characteristics due to the presence of riblet structures. In this work, biomimetic shark-skins were prepared by means of different bio-replicated forming techniques.
Pu Xia +4 more
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Aerodynamic Drag Reduction on Speed Skating Helmet by Surface Structures
Applied Sciences, 2022 The aerodynamic drag for speed skating helmets with surface structures was investigated in this work by using numerical and experimental methods. Computational fluid dynamic (CFD) research was performed to analyze the detail of the flow field around the ...
Yanqing Wang +5 more
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Influence of Wall Deformation Structure on the Liquid Film Flow Behavior Under Turbulent Conditions
Asia-Pacific Journal of Chemical Engineering, Volume 21, Issue 3, May/June 2026.ABSTRACT To explore the influence of typical wall deformation structure in the scrubbing‐cooling tube on the liquid film, this paper studied the liquid film flow behavior on the riblet walls with representative riblet radii and compared them with the flat wall. Under different liquid film Reynolds numbers (Rel = 8.3 × 103 ~ 3.14 × 104), the liquid film
Qian Liu +5 more
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Effect of Different Flow Directions on Drag over Riblet
Journal of Applied Fluid Mechanics, 2020 Variation in flow direction requires extensive consideration in the practical application of riblet surfaces. However, studies scarcely examine the impact of flow angle α for riblet, which is usually adopted to reduce flow drag.
J. Wang, X. Ren, X. Li, C. Gu, M. Zhang
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