"' Crocco's theorem "'is a fluid dynamics theorem relating the flow velocity, vorticity, and stagnation pressure ( or entropy ) of a potential flow.
32.
If the air on one side of the diaphragm is at the static pressure, and the other at the stagnation pressure, then the deflection of the diaphragm is proportional to the dynamic pressure.
33.
For subsonic flow, pitot pressure is equal to the stagnation pressure ( or total pressure ) of the flow, and hence the term pitot pressure is often used interchangeably with these other terms.
34.
If the fluid flow at some point along a streamline is brought to rest, this point is called a stagnation point, and at this point the total pressure is equal to the stagnation pressure.
35.
Since the flow is isentropic, the stagnation properties like stagnation pressure ( p _ 0 ), stagnation temperature ( T _ 0 ) and stagnation density ( \ rho _ 0 ) remain constant.
36.
The only error suffered by pitot tubes is " alignment error " when the axis of the tube is so far out of alignment with the oncoming flow that the pressure in the tube is less than stagnation pressure.
37.
For example, the pressure on the underside of the cube would be the stagnation pressure and that depends on the relative velocity-how fast is the cube falling ? talk ) 05 : 27, 24 March 2010 ( UTC)
38.
Consider an element of fluid in the flow field subjected to translational and rotational motion : because stagnation pressure loss and entropy generation can be viewed as essentially the same thing, there are three popular forms for writing Crocco's theorem:
39.
Hypersonic flows are typically categorized by their total energy, expressed as total enthalpy ( MJ / kg ), total pressure ( kPa-MPa ), stagnation pressure ( kPa-MPa ), stagnation temperature ( K ), or flow velocity ( km / s ).
40.
In the fluid flow field around a body there will be points having positive pressure coefficients up to one, and negative pressure coefficients including coefficients less than minus one, but nowhere will the coefficient exceed plus one because the highest pressure that can be achieved is the stagnation pressure.
