Results 21 to 30 of about 75,987 (260)

Research on wellhead flow detection method at low Reynolds number

open access: yesInternational 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
doaj   +1 more source

Noisy swimming at low Reynolds numbers [PDF]

open access: yesPhysical Review E, 2009
Small organisms (e.g., bacteria) and artificial microswimmers move due to a combination of active swimming and passive Brownian motion. Considering a simplified linear three-sphere swimmer, we study how the swimmer size regulates the interplay between self-driven and diffusive behavior at low Reynolds number.
Dunkel, J, Zaid, I
openaire   +4 more sources

Rotational Maneuvers of Copepod Nauplii at Low Reynolds Number

open access: yesFluids, 2020
Copepods are agile microcrustaceans that are capable of maneuvering freely in water. However, the physical mechanisms driving their rotational motion are not entirely clear in small larvae (nauplii).
Kacie T. M. Niimoto   +4 more
doaj   +1 more source

Biotechnology at low Reynolds numbers

open access: yesBiophysical Journal, 1996
The shrinking of liquid handling systems to the micron and submicron size range entails moving into the area of small Reynolds numbers. The fluid dynamics in this regime are very different from the macroscale. We present an intuitive explanation of how the different physics of small Reynolds numbers flow, along with microscopic sizes, can influence ...
Brody, J.P.   +3 more
openaire   +2 more sources

Optimal Strokes of Low Reynolds Number Linked-Sphere Swimmers

open access: yesApplied Sciences, 2019
Optimal gait design is important for micro-organisms and micro-robots that propel themselves in a fluid environment in the absence of external force or torque.
Qixuan Wang
doaj   +1 more source

Low-Reynolds-number swimming in a capillary tube [PDF]

open access: yesJournal of Fluid Mechanics, 2013
AbstractWe use the boundary element method to study the low-Reynolds-number locomotion of a spherical model microorganism in a circular tube. The swimmer propels itself by tangential or normal surface motion in a tube whose radius is of the order of the swimmer size.
Zhu, L., Lauga, E., Brandt, L.
openaire   +3 more sources

Numerical simulation of low reynolds number 2-d rough blade compressor cascade

open access: yesFrontiers in Energy Research, 2022
In this paper, a double-circular-arc cascade was used as the research object to study the effect of roughness on the compressor cascade under the conditions of different incoming attack angles. The Reynolds number of the cascade is 1.5×105 .
Li-Song Wang   +4 more
doaj   +1 more source

Low Reynolds Number Rotor Blade Aerodynamic Analysis

open access: yesMATEC Web of Conferences, 2019
Maintaining a steady hover flight in a rotorcraft usually requires high energy input. The aim of the paper is to prove that it is possible to vastly reduce energy use in a rotorcraft by reducing the disc loading.
Tulwin Tytus
doaj   +1 more source

Control surface effectiveness of low Reynolds number flight vehicles

open access: yesJournal of Fluid Science and Technology, 2014
Low-speed wind tunnel tests are carried out to investigate the control surface effectiveness at low Reynolds numbers (Re = 20,000-80,000). A thick airfoil, NACA0012, has a nonlinearity of the control surface effectiveness, which are associated with flow ...
Masayuki ANYOJI   +6 more
doaj   +1 more source

Flow characteristics over NACA4412 airfoil at low Reynolds number

open access: yesEPJ Web of Conferences, 2016
In this study, the flow phenomena over NACA4412 were experimentally observed at various angle of attack and Reynolds number of 25000, 50000 and 75000, respectively.
Genç Mustafa Serdar   +5 more
doaj   +1 more source

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