They then applied models of holographic duality to translate the black hole's physics to
the turbulent flows of superfluids.
To the researchers» surprise, their calculations showed that
turbulent flows of a class of superfluids on a flat surface behave not like those of ordinary fluids in 2 - D, but more like 3 - D fluids, which morph from relatively uniform, large structures to smaller and smaller structures.
Understanding mixing dynamics will help researchers with a long - term goal of visualizing
the turbulent flows of an entire giant star, one similar to the sun.
Not exact matches
James P. Gorman, President and Chief Executive Officer, said, «Morgan Stanley effectively navigated
turbulent markets while consolidating our market share gains with Institutional clients and demonstrating resilience across the Global Wealth Management business as evidenced by record net new assets
flows since the formation
of MSSB.
Even the researchers who created this image had a tough time interpreting its complex representation how
of turbulent fluids
flow in three dimensions.
The Reynolds number, the ratio
of inertial forces to viscous forces, is often used in engineering to predict whether
flow conditions will be
turbulent, a high Reynolds number, or laminar.
At the planet's equator is a layer
of turbulent air
flow, which smoothes out at higher latitudes, notes Fred Taylor, a University
of Oxford physicist and interdisciplinary scientist for the Venus Express mission.
But there may be a way to cut drag force by almost 30 %, according to computer simulations
of turbulent ocean - water
flows reported in the 19 May issue
of Science by mechanical engineer Yiqing Du
of the Massachusetts Institute
of Technology and applied mathematician George Karniadakis
of Brown University.
The researchers showed that despite the outward complexities, the law
of resistance for the smooth patches is consistent with laminar
flow, while the law
of resistance for the chaotic patches is consistent with
turbulent flow.
Fluid
flows can take one
of two forms: well - ordered «laminar» or highly disordered «
turbulent» motion.
Most
flows that we can observe in nature and in engineering are
turbulent, from the smoke
of an extinguished candle to the
flow of blood in the left ventricle
of our heart.
Astronomers have been able to forecast trends in the number
of sunspots since the 1800s, but predicting individual spots requires satellites that can probe the
turbulent plasma
flows deep beneath the sun's surface.
The opposite
of this is a
turbulent flow which is characterized by vortices and chaotic changes in pressure and velocity within the fluid.
In their proof
of principle, Björn Hof and his group have now shown that this assumption was wrong, and that a
turbulent flow can indeed be transformed to a laminar one.
For such
flow profiles the processes that sustain and create
turbulent eddies fail and the fluid gradually returns to smooth laminar motion and it remained laminar until it reached the end
of the pipe.
That thin layer
of turbulence acts as a lubricant that allows the rest
of the air to
flow smoothly all the way around the ball, minimizing the size
of the
turbulent wake and the drag — a phenomenon known as the drag crisis.
So does water, in some cases: Around a small model
of a rock - and - concrete dike, for instance, water may display a so - called laminar
flow pattern, whereas in the real world it displays more chaotic
turbulent flows.
Researchers from the University
of Southampton are aiming to shed new light into the physics
of turbulent flows inside the turbines
of aero - engines.
According to the researchers, small VAWTs possess the ability to effectively operate in the presence
of high
turbulent flow, which makes them ideal energy harvesting devices in urban and suburban environments.
«Understanding the physics
of turbulent flows inside turbines.»
The Southampton research team, led by Richard Sandberg, Professor
of Fluid Dynamics and Aeroacoustics, and including Dr Andrew Wheeler and Professor Neil Sandham, has identified that Direct Numerical Simulations (DNS), a model - free approach based on first principles (no assumptions or modelling are used) can help to develop an improved understanding
of the role
of turbulent phenomena in the
flow - field and determine the validity
of current turbulence modelling.
Imagine the most extreme example, a human being who does not possess the power to forget, who is damned to see becoming everywhere; such a human being would no longer believe in his own being, would no longer believe in himself, would see everything
flow apart in
turbulent particles, and would lose himself in this stream
of becoming; like the true student
of Heraclitus, in the end he would hardly even dare to lift a finger.
That math solution describes a point in the
turbulent flow that can be worked with to compute a prediction
of what the turbulence will do next.
The speed
of these currents determines how
turbulent their
flow around underwater mountain ranges (submarine topography) is.
But there's a lack
of knowledge about the driving mechanisms behind the process and how the
turbulent flow, drifting snow, and snow cover all interact.»
In the dolphin's case, a thin layer
of water
flows along the body until it becomes chaotic, or
turbulent.
The team directly measured terms in turbulence model equations, providing insights into the global nature
of the mixing (e.g., faster mixing near the edges
of the
turbulent fluid layer when compared with the core) and identifying the dominant mechanisms governing the
flow evolution.
These winds
flow through a galaxy, and push material out
of it, but their
turbulent motions are such that part
of the material can be re-captured by the gravitational pull
of the galaxy itself.
«This newly discovered analogy has the potential to be a significant step forward in our understanding
of turbulent flows in free - surface vortices and to provide insights into diverse areas
of study ranging from civil engineering hydraulic structures to weather systems in the atmosphere and even extending to the details
of how galaxies rotate around the black holes at their centres,» Dr Richard Sherlock, a lecturer in Physics at IT Sligo, said.
When this happens, the normal slow -
flow of blood through the veins becomes «very fast, swirling, and
turbulent,» Huy Do, MD, an interventional neuroradiologist with Stanford Health Care, tells Health.
Editor Claudine Bouché's
turbulent, free
flowing cuts from early on in the film subtly slow in pace and becomes more pensive and methodical, capturing the tone
of the characters by holding on to the shots a few seconds longer.
This is the world's first draught - stop system that enables different comfort levels to be selected for two occupants, as the driver and passenger can individually pivot the units to the centre
of the vehicle in a flash, thus taming
turbulent air
flow from the rear.
To my eyes, it seemed that there was still quite a lot
of turbulent air
flowing around the body
of the Civic, but the quality
of my aerodynamic analysis could be one
of the reasons why I shoot cars for a living rather than design them.
There's also Airguide, a new draught - stop system consisting
of pivoting transparent plastic layers attached to the reverse
of the roll - over bars — the driver or passenger can swing them to the centre
of the vehicle in a flash to tame
turbulent air
flow.
For an investor looking to invest some funds in a foreign country stock this table might be a good place to start.Since this table lists the highly liquid stocks, investing in them reduces the risk
of liquidity problem especially in times
of turbulent markets.Another advantage
of picking one
of these stocks is «you are going with the
flow of many investors» since there is heavy interest in these stocks.While this can be negatively implied as a herd mentality, still it makes sense to put some money in a highly traded stock first before jumping into other stocks
of a country.For example — it is a good idea to pick up some National bank
of Greece — NBG first before going for Diana Shipping — DSX or other Greek ADRs.
This is often also associated with some degree
of mitral regurgitation, and these causes
of turbulent blood
flow account for the systolic murmur audible in some cats with HCM.
Thickening
of the myocardium per se does not cause
turbulent blood
flow, hence many cats with HCM do not have a heart murmur.
Heart disease leads to
turbulent blood
flow which encourages the formation
of clots.
video 5 — modified left parasternal short axis view
of heart base with color Doppler
of the pulmonary artery showing continuous
flow with small
turbulent jet in opposite direction.
A heart murmur is when extra vibrations are produced due to
turbulent blood
flow or because
of vibrations
of the heart structure, such as part
of a valve.
Examples are: dogs with chronic heart failure or cats with cardiomyopathy, where the
turbulent blood
flow may increase the likelihood
of development
of endocarditis; and dogs with chronic kidney or hepatic failure, where metabolic instability may produce a secondary immunopathy or where septic vascular aggregates may exacerbate the systemic disease.
A heart murmur is an abnormal heart sound caused by
turbulent blood
flow into, through or out
of one or more heart chambers.
In addition, focal syrinx cavities can form anywhere along the length
of the spinal cord if there is something near the syrinx causing
turbulent CSF
flow.
Successfully navigating the
turbulent turns
of the New York city circuit requires a lot
of skill if you want to finish with a fast time or respectable race position, while the narrow design reminiscent
of the first WipEout game forces you to be strategic when overtaking opponents - you really have to meticulously memorise the layout
of the track and remember braking points and boost pad locations to maximise your speed, but it's very rewarding when you get into a
flow, blast through every boost pad and glide into every twist and turn at full speed.
The question you ask is what is the dependence
of the boiling temperature as a function
of pressure — this is a climate question that can be addressed very simply without considering the details
of the
turbulent flow.
Instead, it is a dynamically active, essentially
turbulent fluid, in which large - scale tracer patterns arise from active turbulence and do not necessarily imply domination
of the physics and climate system by large - scale
flow fields....»
The chaos (
turbulent flow) in a tube is due to the forcing
of (pressure applied to) the liquid through the tube.
O'Gorman, P. A., and T. Schneider, 2006: Stochastic models for the kinematics
of moisture flux and condensation in homogeneous
turbulent flows.
But, from the physical side, not worry about some short time scale stuff is similar to not worrying about velocity fluctuations about a mean in a
turbulent flow (for the purpose
of curve fitting!)
So while the general idea
of turbulence in air is correct, your calculation underestimates the tendency for
turbulent flow.