Fluid Mechanics Flashcards
1
Q
Entrance Length Laminar Flow
A
0.06D x Re
2
Q
Entrance Length Turbulent Flow
A
4.4D x (Re)^1/6
3
Q
Re for Laminar Flow
A
< 2100
4
Q
Re for Transitional Flow
A
Between 2100 and 4000
5
Q
Re for Turbulent Flow
A
Over 4000
6
Q
Pump power requirement
A
volume flow rate x pressure loss
7
Q
Torricelli Equation
A
v2 = sqrt(2gh)
8
Q
Pitot tube principle
A
P(stag) = P1 + 0.5p(v1^2)
9
Q
Bernoullis equation -> in terms of pressure
A
divide by roe/density
10
Q
Bernoullis equatoin -> in terms of head
A
divide by roe/density, divde by g
11
Q
Friction factor for Laminar Flow
A
64/Re
12
Q
Head loss for Loss Coefficient
A
head loss = pressure loss/pg
13
Q
Loss coefficient equation
A
head loss/(v^2/(2g))
14
Q
Momentum equation for non-uniform velocity profile
A
Sum F = BmVin - BmVout
15
Q
Continuity equation
A
v1 A1 = v2 A2
