Results 71 to 80 of about 71,336 (264)

Analysis on the effect of variable guide vane numbers on the performance of pump as turbine

open access: yesAdvances in Mechanical Engineering, 2018
To study the effects of different guide vane numbers on the unsteady performance of pump as turbine based on the Navier–Stokes equation and standard k-epsilon turbulence model, computation fluid dynamics technology was used to simulate the flow field in ...
FengXia Shi, JunHu Yang, XiaoHui Wang
doaj   +1 more source

Unsteady shrinking embedded horizontal sheet subjected to inclined Lorentz force and Joule heating, an analytical solution

open access: yesResults in Physics, 2018
This article focuses on the 2D flow of an incompressible Casson fluid over an unsteady shrinking horizontal sheet under inclined Lorentz force and Joule heating.
Emran Khoshrouye Ghiasi, Reza Saleh
doaj   +1 more source

Analysis of added mass in cavitating flow [PDF]

open access: yes, 2012
The paper addresses a theoretical study of the added mass effect in cavitating flow.The cavitation is considered to induce a strong time–space variation of the fluid density at the interface between an inviscid fluid and a three-degree-of-freedom rigid ...
ASTOLFI, Jacques Andre   +1 more
core   +6 more sources

Bioconvective Chemically Reactive Radiative Squeezing Flow of a Casson Hybrid Nanofluid Between Two Parallel Plates Under Variable Viscosity

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Hybrid nanofluids, known for their superior thermal and electrical conductivity, have demonstrated remarkable potential in enhancing the heat transfer capability of conventional base fluids. This study analyzes the effects of viscous dissipation and heat radiation on two‐dimensional unsteady incompressible squeezing flow transporting hybrid ...
Hajra Batool   +3 more
wiley   +1 more source

Time-Dependent Magnetohydrodynamic (MHD) Flow of an Exothermic Arrhenius Fluid in a Vertical Channel with Convective Boundary Condition

open access: yesAdvances in Mathematical Physics, 2023
The current study examined the effects of magnetohydrodynamics (MHD) on time-dependent mixed convection flow of an exothermic fluid in a vertical channel. Convective heating and Navier’s slip conditions are considered.
M. M. Hamza, S. Abdulsalam, S. K. Ahmad
doaj   +1 more source

A Test Program to Measure Fluid Mechanical Whirl-Excitation Forces in Centrifugal Pumps [PDF]

open access: yes, 1980
Much speculation has surrounded the possible unsteady hydrodynamic forces which could be responsible for the excitation of whirl instabilities in turbomachines. However there exist very few measurements of these forces which would permit one to evaluate
Acosta, A. J.   +2 more
core   +1 more source

Unsteady Stokes flow near boundaries: the point-particle approximation and the method of reflections

open access: yes, 2017
Problems of particle dynamics involving unsteady Stokes flows in confined geometries are typically harder to solve than their steady counterparts. Approximation techniques are often the only resort. Felderhof (see e.g.
Mo, Jianyong   +2 more
core   +1 more source

Two‐Phase Nanofluid Flow in a Non‐Newtonian Model Past a Deformable Sheet With Magnetized Environmental Effects: Statistical Modeling and ANOVA Analysis

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This paper presents a comprehensive numerical analysis of magnetohydrodynamic (MHD) Casson nanofluid movement over a permeable, linearly stretching sheet, integrating the contributions of non‐uniform heat generation or absorption and chemical interaction.
Manoj Kumar Sahoo   +3 more
wiley   +1 more source

Hydrodynamic calculation and analysis of a complex-shaped underwater robot based on computational fluid dynamics and prototype test

open access: yesAdvances in Mechanical Engineering, 2017
In this article, a mathematical model of hydrodynamic force was established to model the influence of wall in realizing the precise control and maneuverability of a complex-shaped underwater robot.
Zhandong Li   +5 more
doaj   +1 more source

Effect of magnetic field on unsteady natural convective flow of a micropolar fluid between two vertical walls

open access: yesAin Shams Engineering Journal, 2017
We study theoretically the boundary layer flow of an incompressible micropolar fluid under uniform magnetic field and motion takes place due to the buoyancy force between vertical walls.
Hari R. Kataria   +2 more
doaj   +1 more source

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