Sentences with phrase «turbulent fluid flows»

4 For example, the Navier - Stokes equations are used all the time to approximate turbulent fluid flows around aircraft and in the bloodstream, but the math behind them still isn't understood.

Even the researchers who created this image had a tough time interpreting its complex representation how of turbulent fluids flow in three dimensions.

Not exact matches

In fluid dynamics, a turbulent flow is a swirling fluid with faster or slower areas and higher or lower pressure.

More than 130 years ago, British physicist and engineer Osborne Reynolds described fluid flowing at low speeds as «laminar,» meaning it flows smoothly in a single direction, and fluid flowing at high speeds as «turbulent,» meaning it experiences chaotic changes in pressure and energy.

Fluid flows can take one of two forms: well - ordered «laminar» or highly disordered «turbulent» motion.

The opposite of this is a turbulent flow which is characterized by vortices and chaotic changes in pressure and velocity within the fluid.

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.

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.

«People have seen these patterns in turbulent flows for centuries, but we're finding ways to relate the patterns to mathematical equations describing fluid flows,» Grigoriev said.

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.

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.

The researchers took high - resolution mean and fluctuating velocity and density field measurements in an RM flow, which was shocked and reshocked, to understand production and dissipation in a two - fluid, developing turbulent flow field.

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....»

I am an engineer (naval architect actually) so systems with feedbacks from resonance to damping, fluid flow, turbulent flow etc etc are a daily norm.

It is like fluid flows — they are not always turbulent.

To improve the heat transfer between fluid boundaries you can increase the turbulent flow, which increases both the molecular contact rate and the rate of diffusion in the fluid.

The current thinking in fluid dynamics, for which there is ample theoretical and computational evidence is that the Navier - Stokes equation if solved accurately are very accurate for a wide range of flows including turbulent flows.

Now, Leif, the cause of the turbulent field or natural convection is the suitable flow of energy from the solar core against gravity towards the surface, and the laws of fluid dynamics under conditions in which the convective cell has rotational and orbital components of angular momentum as determined by the path of the sun the planets force it to follow.

The fluid flows are 3 - dimensional and turbulent.