Results 1 to 10 of about 1,648,491 (373)

Collapsing Bacterial Cylinders [PDF]

open access: yesPhysical Review E, 1999
Under special conditions bacteria excrete an attractant and aggregate. The high density regions initially collapse into cylindrical structures, which subsequently destabilize and break up into spherical aggregates.
Betterton, M. D., Brenner, Michael P.
core   +5 more sources

Modelling one-dimensional elastic diffusion processes in an orthotropic solid cylinder under unsteady volumetric perturbations [PDF]

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2022
A polar-symmetric elastic diffusion problem is considered for an orthotropic multicomponent homogeneous cylinder under uniformly distributed radial unsteady volumetric perturbations.
Andrei V Zemskov   +2 more
doaj   +1 more source

Numerical Analysis of the Transient Thermal Stress Intensity Factors in Cylinders Containing an External Circumferential Semi-Elliptical Crack [PDF]

open access: yesJournal of Rehabilitation in Civil Engineering, 2023
In this paper, the transient thermal stress intensity factors for circumferential semi-elliptical crack located on the external surface of the cylinder are determined numerically.
Majid Jamal-Omidi   +2 more
doaj   +1 more source

Numerical Simulation of Turbulent Flow Past a Cylinder Placed Downstream of a Step

open access: yesEnvironmental Sciences Proceedings, 2022
This study investigates the effect on the flow structure in a backward-facing step (BFSF) due to a cylinder placed downstream of the step. Numerical simulations were carried out using OpenFOAM with several turbulence models (standard k-ɛ, RNG k-ɛ ...
Milad Abdollahpour   +2 more
doaj   +1 more source

Numerical Results on Slip Effect over an Exponentially Stretching/Shrinking Cylinder

open access: yesMathematics, 2022
An investigation is conducted to study the flow and heat transfer on stagnation point over an exponentially stretching/shrinking cylinder filled with nanofluid in the presence of slip at the boundary.
Najwa Najib   +3 more
doaj   +1 more source

Method for determining eigen numbers in heat conduction problems for a cylinder

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2023
RELEVANCE. Due to the difficulties of finding eigenvalues and proper functions for bodies with axial (cylinder) and central (ball) symmetries defined in classical methods from the edge Sturm-Liouville problems, including Bessel equations whose exact ...
E. V. Kotova   +2 more
doaj   +1 more source

The analysis of kinematic rolling pairs such as «cylinder in cylinder» [PDF]

open access: yesОмский научный вестник, 2023
The article is devoted to the study of specific kinematic pairs used in many areas of mechanical engineering: the so-called «rolling pairs» used in many mechanisms.
A. Kh. Shamutdinov, I. Yu. Lesnyak
doaj   +1 more source

Wrinkling of Elastic Cylinders With Material Properties Varying in Radial Direction

open access: yesFrontiers in Mechanical Engineering, 2022
Although the instability of graded elastic cylinders has been analyzed by many researchers, most of them focused on the core-shell cylinders and film-substrate structures with inhomogeneous Young’s modulus.
Chunxiao Zhan   +3 more
doaj   +1 more source

Study on Parameterization of Vortex-Induced Vibration Energy Harvester in Agricultural Environment

open access: yesAgriEngineering, 2020
In many special agricultural environments, many wireless sensors have a problem of power supply selection. Energy harvesting in the agricultural environment based on vortex-induced vibration (VIV) has the potential to solve the problem. In this paper, an
Zhangyi Liao, Anping Xiong, Renxin Liu
doaj   +1 more source

Shifted Legendre Collocation Method for the Solution of Unsteady Viscous-Ohmic Dissipative Hybrid Ferrofluid Flow over a Cylinder

open access: yesNanomaterials, 2021
A numerical treatment for the unsteady viscous-Ohmic dissipative flow of hybrid ferrofluid over a contracting cylinder is provided in this study. The hybrid ferrofluid was prepared by mixing a 50% water (H2O) + 50% ethylene glycol (EG) base fluid with a ...
Shekar Saranya   +2 more
doaj   +1 more source

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