$VarInfo DP units=Pa
DuctSuddenCont_CL
Returns the pressure drop associated with a sudden contraction given the fluid, its flow rate and state and the upstream and downstream areas. This function calls the K_sudden_contraction function from the minor loss library.
DELTAP = DuctSuddenCont_CL(F$, m_dot, T, P, A_2, A_1)
Inputs:
F$: fluid string identifier
m_dot: mass flow rate (kg/s, lbm/hr)
T: inlet temperature (K, C, F, or R)
P: inlet pressure (bar, atm, Pa, kPa, or MPa)
A_2: downstream duct area (m^2 or ft^2)
A_1: upstream duct area (m^2 or ft^2)
Output:
DELTAP: pressure drop (bar, atm, Pa kPa, or MPa)
Example:
$UnitSystem SI Mass kJ C Pa
$Load Component Library
$VarInfo DP units=Pa
F$ = 'Air'
m_dot = 0.1 [kg/s]
T = 20 [C]
P = 100000 [Pa]
A_1 = 0.01 [m^2]
A_2 = 0.005 [m^2]
DP = DuctSuddenCont_CL(F$, m_dot, T, P, A_2, A_1)
{Solution:
DP = 42.07 [Pa]}