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what is relation between air velocity(lit/s)and pressure

what is relation between air velocity(lit/s)and pressure

what is relation between air velocity(lit/s)and pressure

(OP)
hi
is there any direct or indirect relation between air velocity(lit/s)and air pressure .if u know please help me and write its formula

RE: what is relation between air velocity(lit/s)and pressure

dynamic pressure = 1/2*rho*v^2

rho is air density = 0.002377 at sealevel
(the units are slugs/ft^3)
v is velocity in ft/sec
pressure is lbf/ft^2

RE: what is relation between air velocity(lit/s)and pressure

soheil, by lit/s you mean liters(litres) per second?  This is volume flow rate not velocity.  However, dividing it by the area it's flowing through will get you a velocity.

Looks like you're in SI so I'd convert the lit/s to m^3/s then go from there.

rb1957 equation is correct but in metric you'd use m/s for velocity, kg/m^3 and N/m^2 (or equivalent) for pressure.

Be aware, in a real world situation this will most likely only be an approximation.

KENAT, probably the least qualified checker you'll ever meet...

RE: what is relation between air velocity(lit/s)and pressure

and you've got to convert density to 1.225kg/m3 ...
but a good catch with OPs units.

and if we're in a duct, what's the pressure ?

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