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Second Cowling Number

The Cowling number expresses the magnetic-to-intertia forces ratio.

The second Cowling number equals the magnetic flux density squared divided by the product of the magnetic permeability, the mass density and the square of the characteristic speed.

Formula

QuantityVariable["Co", "CowlingNumber2"] == QuantityVariable["B", "MagneticFluxDensity"]^2/(QuantityVariable["v", "Speed"]^2*QuantityVariable["μ", "MagneticPermeability"]*QuantityVariable["ρ", "MassDensity"])

symbol description physical quantity
Co second Cowling number "CowlingNumber2"
B magnetic flux density "MagneticFluxDensity"
v characteristic speed "Speed"
μ magnetic permeability "MagneticPermeability"
ρ mass density "MassDensity"

Forms

Examples

Get the resource:

In[1]:=
ResourceObject["Second Cowling Number"]
Out[1]=

Get the formula:

In[2]:=
FormulaData[ResourceObject["Second Cowling Number"]]
Out[2]=

Use some values:

In[3]:=
FormulaData[ ResourceObject[ "Second Cowling Number"], {QuantityVariable[ "\[Mu]","MagneticPermeability"] -> Quantity[1, ("Henries")/("Meters")], QuantityVariable["B","MagneticFluxDensity"] -> Quantity[1, "Milliteslas"], QuantityVariable["Co","CowlingNumber2"] -> 1, QuantityVariable["\[Rho]","MassDensity"] -> Quantity[1000, ("Kilograms")/("Meters")^3]}]
Out[3]=

Source Metadata

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