Why vortex is formed

The alternating direction of rotation in the air forms swirls in the clouds. A vortex flow meter is a flow measurement device best suited for flow measurements where the introduction of moving parts presents problems. Vortex flow meters operate under the vortex shedding principle, where an oscillating vortexes occur when a fluid such as water flow past a bluff as opposed to streamlined body.

We can determine the value of the mass flow rate from the flow conditions. The mass m contained in this volume is simply density r times the volume. To determine the mass flow rate mdot, we divide the mass by the time.

Begin typing your search term above and press enter to search. Press ESC to cancel. Skip to content Home Articles What three things cause a vortex to form? Ben Davis February 9, What three things cause a vortex to form?

What constitutes a vortex? What are examples of a vortex? How is a water vortex created? What do you feel in a vortex? Does water drain faster in a vortex? Does swirling water drain faster? Two simple examples of vortices are the free vortex and the forced vortex. In this case, the vorticity is zero everywhere as is illustrated in Figure 1a which shows a fluid element moving in such a flow.

Of course, in practice, such a flow cannot exist exactly as it would imply an infinite velocity at the axis. This type vortex has the property that the vorticity is constant everywhere and equal to twice the angular velocity. Real vortices can often be represented approximately by an inner core which is a fixed vortex, and an outer region where the velocity profile is as for a free vortex—this is known as a Rankine vortex.

An example of a situation in which vortices are generated is that of flow past a cylinder. Figure 2a shows the presence of two counter rotating vortices behind the cylinder.

At higher flow speeds, the vortices become detached and leave the cylinder. A schematic illustration of the streamlines in a frame of reference moving with the mean fluid flow is given in Figure 2b. Astronomers from Serbia have found that invisible structures created by gravitational interaction in our Solar System ge Written By: Annie Lennon.

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