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DuctExtractBranch45_CL

Returns the pressure drop associated with an extract duct with a branch.  The branch is at 45 degrees and the ducts have circular cross-section.  The pressure drop should be applied to the flow from the branch.  The function calls the K_extract_branch_45 function from the minor loss library.

DELTAP = DuctExtractBranch45_CL(F\$, m_dot_3, m_dot_1, T, P, A_3, A_1)

Inputs:

F\$:  fluid string identifier

m_dot_3:  mass flow rate in main duct upstream of branch (kg/s, lbm/hr)

m_dot_1:  mass flow rate in branch (kg/s, lbm/hr)

T:  inlet temperature (K, C, F, or R)

P:  inlet pressure (bar, atm, Pa, kPa, or MPa)

A_3:  upstream duct area (m^2 or ft^2)

A_1:  branch duct area (m^2 or ft^2)

Output:

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

Example:

\$UnitSystem SI Mass J K Pa Degree

\$VarInfo DP_duct units=Pa

m_dot_3 = 0.5 [kg/s]

m_dot_1 = 0.4 [kg/s]

T = 300 [K]

P = 100e3 [Pa]

A_1 = 0.05 [m^2]

A_3 = 0.2 [m^2]

F\$ = 'Air'

DP_Duct = DuctExtractBranch45_CL(F\$, m_dot_3, m_dot_1, T, P, A_3, A_1)

{Solution:

DP = 23.04 [Pa]}