Describe how a Vortex Shedding flowmeter operates. Your answer should be 2 or 3 paragraphs
Describe how a Vortex Shedding flowmeter operates. Your answer should be 2 or 3 paragraphs
Homework Answers
A vortex flow meter is a flow measurement
device best suited for flow measurements where the introduction of
moving parts presents problems. They are available in industrial
grade, brass or all plastic construction. Sensitivity to variations
in the process conditions are low and with no moving parts have
relatively low wear compared to other types of flow meters.
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. The frequency that
the vortexes are shed depend on the size and shape of the body. It
is ideal for applications where low maintenance costs are
important. Industrial size vortex meters are custom built and
require appropriate sizing for specific applications.
The vortex-shedding phenomenon can be observed as wind is shed from a flagpole: it is what causes the regular rippling in a flag. Vortices are also shed from bridge piers, pilings, offshore drilling platform supports, and tall buildings. The forces caused by the vortex-shedding phenomenon must be taken into account when designing these structures.
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Describe how a Vortex Shedding flowmeter operates. Your answer
should be 2 or 3 paragraphs
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how to answer?
A periodic Kármán vortex street is formed when a uniform stream flows over a circular cylinder. Use the method of repeating variables to generate a dimensionless relationship for Kármán verte density r, fluid viscosity m, and cylinder diameter D. Show all your work 4. ex shedding frequency f as a function of free-stream speed V. fluid
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6. (3 pts.) A long submerged support leg of a bridge will experience vortex shedding when a river current flows past it. These vortices can create damaging periodic forces so you want to do a scale model test in a water tunnel as part of the initial bridge design. A dimensional analysis on this phenomenon reveals the following Pi terms: where ω shedding frequency, V-fluid velocity, p-fluid density,μ fluid viscosity and D and H are as shown. For the specific...
how to answer?
A periodic Kármán vortex street is formed when a uniform stream flows over a circular cylinder. Use the method of repeating variables to generate a dimensionless relationship for Kármán verte density r, fluid viscosity m, and cylinder diameter D. Show all your work 4. ex shedding frequency f as a function of free-stream speed V. fluid
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