pressure

danielo

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Hi
please help me
what these terms mean
static pressure
dynamic pressure
mechanical pressure
thermodynamic pressure
total pressure
bulk pressure
mean pressure
stagnation pressure
and pressure instrument device measure what kind of them​
 

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wassim sahyoun

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alsalam3alykom
Static pressure: is defined as “the pressure exerted by a still liquid or gas, especially wateror air1.” For turkey growers, this simply relates to the occurrence of a slight decrease in pressurewithin a turkey building relative to outside air pressure when one or more exhaust fans are turned
on. It is important that we understand this concept because the use of exhaust fans, or negativepressure ventilation, is the most common form of power ventilating turkey buildings in Utah. Negative pressure ventilation is also the easiest and most efficient method to control air
exchange.
 

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  • Ag_poultry_Vent_03.pdf
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wassim sahyoun

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[FONT=Arial, Helvetica, sans-serif]dynamic pressure[/FONT] dynamic pressure[FONT=Arial, Helvetica, sans-serif]: The pressure of a fluid, such as air, that results from its motion, or the pressure exerted on a body, because of its motion through a fluid. Dynamic pressure is equal to one-half the fluid density, ρ, multiplied by the square of the fluid's velocity, V. That is, dynamic pressure = ½ρV2. In incompressible flow, the dynamic pressure is the difference between the total pressure and the static pressure. It is designated by the letter "q."
http://www.grc.nasa.gov/WWW/K-12/airplane/dynpress.html
[/FONT]
 

wassim sahyoun

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best regards hope this will help you
God bless you and all of arab eng and all eng..,.also all who in this site
best regards and hard luck for all
 

د.محمد باشراحيل

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Hi

please help me
what these terms mean
static pressure
dynamic pressure
mechanical pressure
thermodynamic pressure
total pressure
bulk pressure
mean pressure
stagnation pressure

and pressure instrument device measure what kind of them​

alsalam3alykom
Static pressure: is defined as “the pressure exerted by a still liquid or gas, especially wateror air1.” For turkey growers, this simply relates to the occurrence of a slight decrease in pressurewithin a turkey building relative to outside air pressure when one or more exhaust fans are turned
on. It is important that we understand this concept because the use of exhaust fans, or negativepressure ventilation, is the most common form of power ventilating turkey buildings in Utah. Negative pressure ventilation is also the easiest and most efficient method to control air
exchange.

[FONT=Arial, Helvetica, sans-serif]dynamic pressure[/FONT] dynamic pressure[FONT=Arial, Helvetica, sans-serif]: The pressure of a fluid, such as air, that results from its motion, or the pressure exerted on a body, because of its motion through a fluid. Dynamic pressure is equal to one-half the fluid density, ρ, multiplied by the square of the fluid's velocity, V. That is, dynamic pressure = ½ρV2. In incompressible flow, the dynamic pressure is the difference between the total pressure and the static pressure. It is designated by the letter "q." [/FONT]
[FONT=Arial, Helvetica, sans-serif]http://www.grc.nasa.gov/WWW/K-12/airplane/dynpress.html[/FONT]

best regards hope this will help you
God bless you and all of arab eng and all eng..,.also all who in this site
best regards and hard luck for all

I thank Eng. Wassim for his answers to the questions raised by Eng.Danielo
and If you may allow me to conribute with this site . It has a lot of information
just go through all the subjects mentioned in the index


http://hyperphysics.phy-astr.gsu.edu/hbase/press.html#pre


http://hyperphysics.phy-astr.gsu.edu/hbase/pflu.html#fp

http://hyperphysics.phy-astr.gsu.edu/hbase/pman.html#atm


and a lot more.

All the best to all

 

danielo

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thanks fellows
but all sites explain static and dynamic pressure
i need to know thermodynamic and mechanical and bulk and mean pressure
and you know dynamic pressure definition is for ideal fluid not for real fluid
 
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