Results 21 to 30 of about 17,162 (248)
Experimental Study on the Drag Reduction of Surfactant and Microgrooves
Chemical Engineering Transactions, 2020 In the drag-reducing surfactant solution, the scale of near-wall vortices could be enlarged, and the drag reduction mechanism of longitudinal microgrooves was related to the scale of near-wall streamwise vortices.
Chonghai Huang +7 more
doaj +1 more source
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1991 In order to control the turbulent energy production and transport processes due to the coherent vortices associated with the bursting phenomenon in a d-type rough wall turbulent boundary layer, longitudinal thin ribs were placed within the transverse grooves with a suitable spanwise spacing.
MOCHIZUKI, Shinsuke, OSAKA, Hideo
openaire +2 more sources
Simulation analysis tentative scheme of drag reduction by additives in water cannon system
Zhongguo Jianchuan Yanjiu, 2019 [Objectives]In order to increase the range and flow rate of the water cannon system,drag reduction additive was introduced.[Methods]Firstly,the experimental results showed that the typical drag reduction additive was also effective for seawater system ...
Lin Peng +4 more
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Measurement of Drag Reduction in Dilute Polymer Solution Using Triboelectric Effect
Applied Rheology, 2018 In this paper, we present a novel method we have developed for measuring the drag reduction in a dilute polymer solution, based on the triboelectricity phenomenon.
Nsom Blaise, Latrache Noureddine
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Analysis of Drag Reduction Methods and Mechanisms of Turbulent
Applied Bionics and Biomechanics, 2017 Turbulent flow is a difficult issue in fluid dynamics, the rules of which have not been totally revealed up to now. Fluid in turbulent state will result in a greater frictional force, which must consume great energy.
Gu Yunqing +4 more
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Advances in Aerodynamics, 2023 Turbulence drag reduction is of great significance for the range increase of hypersonic flight vehicles. The proposed velocity-temperature coupling control method (Liu et al, Phys Rev Fluids 6:044603, 2021) is further extended to the hypersonic turbulent
Qiang Liu +4 more
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FEBS Open Bio, EarlyView.The brown marmorated stink bug, Halyomorpha halys, mainly secretes 4‐oxo‐(E)‐2‐hexenal, (E)‐2‐decenal, dodecane and tridecane, a mixture representative of that released by many heteropterans. We demonstrated that H. halys can synthesise these secretory components de novo using dietary glucose.
Haruna Fujimori, Koji Noge
wiley +1 more source
Experimental Study on Drag Reduction Characteristics of Bionic Earthworm Self-Lubrication Surface
Applied Bionics and Biomechanics, 2019 In the present study, a coupling bionic method is used to study the drag reduction characteristics of corrugated surface with lubrication. In order to test the drag reduction features, bionic specimen was prepared inspired by earthworm surface and ...
Guomin Liu +4 more
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[18F]Fluorodeprenyl‐D2 PET as a Tool to Monitor Disease Activity in GAD65‐Ab Autoimmune Encephalitis
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To evaluate [18F]fluorodeprenyl‐D2 ([18F]F‐DED) positron‐emission tomography (PET) imaging as a biomarker of disease activity in autoimmune encephalitis (AIE) associated with glutamic acid decarboxylase 65 (GAD65) antibodies. Methods [18F]F‐DED PET was performed in 25 GAD65‐AIE patients and 8 controls using dynamic (0–60 min) and ...
Julia S. Dorneich +19 more
wiley +1 more source
AerospaceThe riblets surface is a passive turbulence drag reduction technology that holds promising application prospects in drag reduction for large aircraft. Currently, most research on the drag reduction characteristics of riblets is limited to medium and low ...
Qiyue Ma +6 more
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