Turbulence

2022 - 9 - 1

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Image courtesy of "AZoOptics.com"

Influences Behind Evolution of the Turbulent Flame Brush (AZoOptics.com)

Studying how coherent oscillations of various amplitudes can affect the development of turbulent flame brush in a bluff body is the main goal of a recent ...

Both turbulent and coherent variations can have a considerable effect on the stability and dynamics of the flame. The existence of in-flow turbulence oscillations can interfere with the coherence of the vortex shedding and create variations in the cyclic locations of the flame and the vortex cores, a phenomenon known as "phase jitter." Turbulence and coherent motions combine to alter the behavior of the flame in reacting and non-reacting flows. The findings demonstrated that the low-turbulence condition had a stronger coherent vortical response than the high-turbulence condition for the same relative input of coherent excitation, as higher levels of in-flow turbulence disturb the coherence of vortices. Impact of turbulence on flame brush development of acoustically excited rod-stabilized flames. The coherent shedding of vortical structures can have a significant impact on the flame. The size and rotational force of the vortex can affect how the flame reacts to a vortical disturbance. Coherent vortex shedding is a common indication of naturally occurring variabilities in the flow field and the flow's reaction to external disturbances, both of which can lead to coherent oscillations. Studying how coherent oscillations of various amplitudes can affect the development of turbulent flame brush in a bluff body is the main goal of a recent study published in As the vortex expands and contracts in the near-field region, the flame reaction increases linearly, resulting in an escalating flame wrinkle. The stability and behavior of turbulent flames can be greatly impacted by significant coherent oscillations. Coherent structures can dramatically affect the flame structure and flame release.

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Image courtesy of "CNN Travel"

Why air turbulence could be about to get a whole lot worse (CNN Travel)

Most of us have experienced turbulence while traveling: when your plane flies through clashing bodies of air moving at widely different speeds.

"Typically I'm not scared of turbulence, because it's something that we're taught about in training and we know what to do to protect ourselves. It went on for a very long time, but luckily we got safely on the ground," she says. "When anything happens on the plane, the passengers look to us, to see if we look concerned," she adds. "We ran some computer simulations and found that severe turbulence could double or triple in the coming decades," he says. This is the kind of turbulence that causes serious Injuries -- it's been known to break bones, for example." "There's light turbulence, which is a bit of strain against your seat belt, but food service can continue and you can probably walk around the cabin, maybe with some difficulty.

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Image courtesy of "KSL.com"

Why air turbulence could be about to get worse (KSL.com)

A flight takes off at Ronald Reagan Washington National Airport in Arlington, Va., in July of 2019, after a storm delayed flights. (Jim Watson, AFP, Getty ...

"Typically I'm not scared of turbulence, because it's something that we're taught about in training and we know what to do to protect ourselves. "When anything happens on the plane, the passengers look to us, to see if we look concerned," she adds. It went on for a very long time, but luckily we got safely on the ground," she says. It also recommended to streamline the systems for collecting and sharing turbulence reports, because that information isn't traveling widely or promptly enough at the moment. For example, the ability for children under the age of two to fly on their parents' lap. According to the NTSB, between 2009 and 2018, the flight crew had no warning in about 28% of turbulence-related accidents. "We have flight attendants who have been thrown into the ceiling and then back down several times, resulting in broken limbs. "We ran some computer simulations and found that severe turbulence could double or triple in the coming decades," he says. This is the kind of turbulence that causes serious injuries — it's been known to break bones, for example." "There's light turbulence, which is a bit of strain against your seat belt, but food service can continue and you can probably walk around the cabin, maybe with some difficulty. About 65,000 aircraft suffer moderate turbulence every year in the U.S., and about 5,500 run into severe turbulence. airlines — due to injuries, delays and damages — up to $500 million per year, according to the [National Center for Atmospheric Research](https://ral.ucar.edu/aap/turbulence).

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