Fluids Flashcards
Density
Density =Mass/Volume
Specific Gravity
(Density of something)/(Density of water at 4 degrees Celsius)
Pressure
P=F/A
Absolute Pressure
P(h)=P0 + density gh
Gauge pressure
P(h)-P0=density gh
Pascal’s Principle
(F1/A1)=(F2/A2)
F2=(A2/A1)*F1
If pressure is the same
Equation of Continuity
A1V1=A2V2
A1Densitychange in l1=A2Density change in l2
A1Density (v1change in t)=A2Density(v2change in t)
Volume flow rate
Av=(change in V)/(change in t)
1 Pascal=
1 N/m^2
Buoyant Force
Fb=density volume (submerged)g
Bernoulli’s Equation
P1+(1/2)density (v1)^2 + density (g)(y1)= P2 + (1/2)density (v2)^2 +density (g)(y2)
1 atm=
10^5 N/m^2
Force from Viscosity
F=Viscosity ((Av)/l)
Volume Flow Rate (Q)
Q=(piR^4(P1-P2))/8Viscosity *l
Pressure
P=F/A