Results 21 to 30 of about 1,992,735 (378)
Towards the definition of a benchmark for low Reynolds number propeller aeroacoustics
Journal of Physics: Conference Series, 2021 Experimental and numerical results of a propeller of 0.3 m diameter operated in quiescent standard ambient conditions at 5000 RPM and axial velocity ranging from 0 to 20 m/s and advance ratio ranging from 0 to 0.8 are presented as a preliminary step ...
D. Casalino +4 more
semanticscholar +1 more source
Processes, 2022 In recent years, there has been an increased interest in the old NACA four-digit series when designing wind turbines or small aircraft. One of the airfoils frequently used for this purpose is the NACA 0018 profile. However, since 1933, for over 70 years,
J. Michna, K. Rogowski
semanticscholar +1 more source
Stochastic low Reynolds number swimmers [PDF]
Journal of Physics: Condensed Matter, 2009 As technological advances allow us to fabricate smaller autonomous self-propelled devices, it is clear that at some point directed propulsion could not come from pre-specified deterministic periodic deformation of the swimmer's body and we need to develop strategies to extract a net directed motion from a series of random transitions in the ...
Golestanian, R. ; https://orcid.org/0000-0002-3149-4002 +1 more
openaire +5 more sources
Experimental investigation of low Reynolds number rotor noise.
Journal of the Acoustical Society of America, 2021 In this paper, an experimental characterisation of low Reynolds number rotors is performed in an anechoic room. Two commercially available two-bladed rotors as well as four three-dimensional (3D)-printed rotors with different numbers of blades (from two ...
R. Gojon, T. Jardin, H. Parisot-Dupuis
semanticscholar +1 more source
Optimal Swimming at Low Reynolds Numbers [PDF]
Physical Review Letters, 2004 Efficient swimming at low Reynolds numbers is a major concern of microbots. To compare the efficiencies of different swimmers we introduce the notion of ``swimming drag coefficient'' which allows for the ranking of swimmers. We find the optimal swimmer within a certain class of two dimensional swimmers using conformal mappings techniques.
Avron, J. E., Gat, O., Kenneth, O.
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Low-Reynolds-number swimming at pycnoclines. [PDF]
Proc Natl Acad Sci U S A, 2012 Microorganisms play pivotal functions in the trophic dynamics and biogeochemistry of aquatic ecosystems. Their concentrations and activities often peak at localized hotspots, an important example of which are pycnoclines, where water density increases sharply with depth due to gradients in temperature or salinity.
Doostmohammadi A +2 more
europepmc +5 more sources
Scattering of low-Reynolds-number swimmers [PDF]
Physical Review E, 2008 We describe the consequences of time reversal invariance of the Stokes' equations for the hydrodynamic scattering of two low Reynolds number swimmers. For swimmers that are related to each other by a time reversal transformation this leads to the striking result that the angle between the two swimmers is preserved by the scattering.
Alexander, G, Pooley, C, Yeomans, J
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Analysis of low Reynolds number flow past Gurney flap [PDF]
INCAS Bulletin, 2010 The trailing edge region of a single element wing fitted with Gurney flap at low Reynoldsnumbers has been studied.The complex flow separation phenomena on airfoils with Gurney flap at low Reynolds numbershave some specific features as the separation on ...
Ion MĂLĂEL, Horia DUMITRESCU
doaj +1 more source
Energies, 2022 This numerical study investigated the flow-induced vibration (FIV) on non-heated and heated cylinders with different normalized corner radii (r*) at different Reynolds numbers (Re).
Yuvraj Sarout +3 more
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Research on wellhead flow detection method at low Reynolds number
International Journal of Thermofluids, 2023 The detection of wellhead fluid flow is critical in the development of low-production wells. The production status can be evaluated according to the flow of production wells. The thermal flowmeter designed in this paper mainly measures the flow of single-
Hongwei Qin, Ruirong Dang, Bo Dang
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