Why do cyclones not form on the equator? Why does the circulation within a cyclone usually bring cloudy, stormy weather? How are dust devil tracks formed? How does wind shear have an affect on tropical depressions? How does the cryosphere affect hurricanes? Why are there circumpolar vortices ar...
How do hurricanes form? Hurricanes are the most violent storms on Earth, according toNASA. At heart, hurricanes are fueled by just two ingredients: heat and water. Hurricanes are seeded over the warm waters above the equator, where the air above the ocean's surface takes in heat and moistur...
How do forest fires affect the geosphere? How are fuels such as coal and petroleum formed? Why do earthquakes often cause damaging fires? How do rope tornadoes form? How can fire tornadoes be predicted? How does water vapor affect how volcanoes erupt?
Dust devil-like vortices are numerically investigated mainly by large-eddy simulation (LES). A critical parameter in these simulations is the grid spacing, which has a great influence on the dust devil statistics. So far, it is unknown which grid size is sufficient to capture dust devils ...
However, it becomes highly questionable in the case where tidal waves interact with potentially stable large-scale vortices, as those observed at the pole of Jupiter and Saturn. They are potentially triggered by convection in rapidly-rotating bodies in which the Coriolis acceleration forms the flow ...
When these vortices are tilted from horizontal to vertical, you get fire whirls. Fire whirls have been known to hurl flaming logs and burning debris over considerable distances. "There's another way that you can tilt the vorticity. That is it can be titled without breaking into fire whirls...
The formation of a vortex in a bottle results when centripetal and centrifugal forces are applied to a system with varying densities, in this case the difference in density between air and water. In nature vortices form when a wet weather system collides with dry air. In both systems the dif...
Small dust devils sometimes form when winds flow over hot deserts, and wildfires can also produce climbing vortices of flame and ash called fire whirls. Scientists have even observed dust devils on Mars and spotted solar tornadoes whipping out from the sun. In a tornado, the same sort of ...
The Olympic track bike features the same tubercules (which are inspired by humpback whale fins) as on Ganna's bike. They're included in the seat tube and seatpost, and Pinarello says they reduce vortices generated by the rider's legs, lowering drag. While wide forks and stays may be tre...
If the angle of attack is too large or the surface of the wing is not smooth (too sharp of a curve for a given speed), then the air flow from in front of the wing tends to separate away from the surface then form large vortices (or one very large vortice) above a wing...