نتایج جستجو برای: air core vortices

تعداد نتایج: 426321  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران 1378

از جمله معروفترین آنتی بیوتیکهای ضدسرطان، می توان به آدریامایسین دانومایسین و اکتینومایسین d اشاره کرد. این داروها در معالجه سرطان از طریق شیمی درمانی مودر استفاده قرار می گیرند. هدف اصلی این داروها در سلول، مولکول dna است . از آنجا که مولکول dna در داخل هسته سلول به صورت برهنه و آزاد نیست بلکه در اتصال با ترکیبات دیگری مثل پروتئین های هسیتونی و غیرهیستونی می باشد، میان کنش این داروها با پروتئی...

Journal: :Journal of Advances in Modeling Earth Systems 2022

Abstract This study investigates the emergence of hurricane‐like vortices in idealized simulations rotating moist convection. A Boussinesq atmosphere with simplified thermodynamics for phase transitions is forced by prescribing temperature and humidity at upper lower boundaries. The governing equations are solved numerically using a variable‐density incompressible Navier‐Stokes solver adaptive ...

Journal: :Physical review letters 2007
M Belkin A Snezhko I S Aranson W-K Kwok

Magnetic microparticles suspended on the liquid-air interface and subjected to an alternating magnetic field exhibit spontaneous formation of dynamic localized snake patterns. These patterns are accompanied by four large-scale hydrodynamic vortices located at the opposite ends of the snake patterns. We report detailed studies of these large-scale vortices and their relationship to the collectiv...

Journal: :Fluids 2021

Large-eddy simulations have been conducted for two-phase flow (water and air) in a hydrocyclone using Two-Fluid (Euler–Euler) Volume-of-Fluid (VOF) models. Subgrid stresses are modeled dynamic eddy–viscosity model, results compared to those the Smagorinsky model. The effects of grid resolutions on mean turbulence statistics thoroughly investigated. Five block-structured grids 0.72, 1.47, 2.4, 3...

Journal: :Communications physics 2021

We experimentally and theoretically explore the creation time evolution of vortex lines in polar magnetic phase a trapped spin-1 $^{87}$Rb Bose-Einstein condensate. A process phase-imprinting nonsingular vortex, its decay into pair singular spinor vortices, rapid exchange phases creates three-dimensional, singly-quantized with core regions that are filled atoms ferromagnetic phase. Atomic inter...

2007
Damien Douxchamps Sébastien Lugan Yannick Verschueren Laurence Mutuel

This paper describes the first successful attempt to detect wake vortices axially using an on-board infrared pulsed Doppler LiDAR (Light Detection And Ranging). On-board axial detection is more complex than the classic ground-based tangential approach, because the axial air speed in vortices is low and the atmospheric particle density is reduced, yielding a poorer SNR. To provide meaningful res...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی 1391

the study of air infiltration into the buildings is important from several perspectives that may be noted to energy and design of hvac systems, indoor air quality and thermal comfort and design of smoke control systems. given the importance of this issue, an experimental and numerical study of air infiltration through conventional doors and windows has been explored in iran. to this end, at fir...

2011
A. M. Mounce S. Oh S. Mukhopadhyay W. P. Halperin A. P. Reyes P. L. Kuhns K. Fujita S. Uchida

It has been predicted that superconducting vortices should be electrically charged and that this effect is particularly enhanced for high-temperature superconductors1,2. Hall effect3 and nuclear magnetic resonance (NMR) experiments4 suggest the existence of charge accumulation in the vortex core, but the effects are small and the interpretation controversial. Here we show that the Abrikosov vor...

2003
Ernst W. Mayer

Results are presented for a new class of selfsimilar solutions to the steady, axisymmetric Navier-Stokes equations, modelling the flows in vortices whose viscous cores grow proportionally to an arbitrary power of the axial coordinate. Effects of Reynolds number, growth rate, free-stream Mach number and vortex strength are investigated. Results for incompressible vortices are compared to experim...

1995
NEIL N. CARLSON

This paper introduces a nonlinear Schrr odinger model for superruid that captures the process of mutual friction between the superruid and normal uid components of helium II. Superruid vortices are identiied as topological defects in the solution of this equation. A matched asymptotic analysis of Neu 7] is adapted to derive an asymptotic dynamics for the vortices in the case they are widely sep...

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