Returns the pressure drop associated with a reentrant inlet given the fluid, its flow rate and state, the length of reentrant duct, the duct wall thickness, and the diameter of the duct.  Valid for circular duct cross-sections.  This function calls the K_Reentrant_Pipe_Inlet function from the minor loss library.


DELTAP = DuctReentrantInlet_CL(F$, m_dot, T, P, L, th, D)



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)

L:  length of reentrant duct section (m or ft)

th:  thickness of duct wall (m or ft)

D:  downstream duct diameter (m or ft)



DELTAP:  pressure drop (bar, atm, Pa kPa, or MPa)



$UnitSystem SI Mass J K Pa Degree

$Load Component Library

$VarInfo DP units=Pa


m_dot = 0.1 [kg/s]

T = 300 [K]

P = 100e3 [Pa]

L = 0.015 [m]

th = 0.002 [m]

D = 0.15 [m]

F$ = 'Air'

DP = DuctReentrantInlet_CL(F$, m_dot, T, P, L, th, D)



DP = 10.75 [Pa]}