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Hydraulic, gas - Coggle Diagram
Hydraulic
Pressure
Pressure = Force / Area
Pressure = density x gravity x height
1 Pascal = 1 N/m^2
1 atm = 101.3 kPa
Pascal's Law
In liquids pressure changes with depth
Pressure below surface P = Patm +pgd
pressure in uniform density P2 = P1 + pgd
Thermal Physics
Conduction
Convection
Radiation
State of fluid
Liquid
Liquids are defined by a surface tension
In engineering liquids are incompressible
Gas
Density
density = mass/volume
For Non Uniform volume, Equation represents average density
Si Unit: Kg/m3
Applications
Landing gears
Car Suspensions
Specific volume
Volume per unit mass
