نتایج جستجو برای: swirling flow

تعداد نتایج: 482645  

Journal: :Journal of Fluid Science and Technology 2006

Journal: :Journal of Differential Equations 1975

Journal: :Proceedings of the Royal Society of Edinburgh: Section A Mathematics 1977

Journal: :Biorheology 2002
Francois Mallinger Dimitris Drikakis

Laminar-to-turbulent transition in pulsatile flow through a stenosis is studied by means of three-dimensional numerical simulations. The flow transition is associated with the occurrence of a flow instability initiating in the stenosis region. The instability is manifested by a three-dimensional symmetry-breaking and leads to asymmetric separation and intense swirling motion downstream of the s...

2017
V. Ranjan A. Kumar G. Prakash R. Mandal

Understanding the flow fields at the micro-scale is a key to develop methods of successfully mixing fluids for micro-scale applications. This paper investigates flow characteristics and mixing of three different geometries in micro-channel. A Circular groove micro mixer has been designed and simulated. One such channel is shown in Figure1. The geometry of the channels taken was rectangular with...

Journal: :Physical review letters 2010
M A Jaworski T K Gray M Antonelli J J Kim C Y Lau M B Lee M J Neumann W Xu D N Ruzic

The direct observation of a thermoelectric magnetohydrodynamic (TEMHD) flow has been achieved and is reported here. The origin of the flow is identified based on a series of qualitative tests and corresponds, quantitatively, with a swirling flow TEMHD model. A theory for determining the dominant driver of a free-surface flow, TEMHD or thermocapillary (TC), is found to be consistent with the exp...

1990
M. LOPEZ

A comparison between the experimental visualization and numerical simulations of the occurrence of vortex breakdown in laminar swirling flows produced by a rotating endwall is presented. The experimental visualizations of Escudier (1984) were the first to detect the presence of multiple recirculation zones and the numerical model presented here, consisting of a numerical solution of the unstead...

Journal: :Journal of physics 2022

Abstract This article presents a comparative analysis of flow characteristics behind hydraulic turbine runner in air and water. Swirling with precessing vortex core (PVC) was investigated using laser Doppler anemometer pressure pulsation sensors. The experiments were conducted on aerodynamic hydrodynamic test rigs over wide range operating conditions. Part-load modes operation the Fourier trans...

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