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Chapter 6 External Routines 47 Volume Heating real function userVHeating (iv ,time ,p , T ,q0 ,tau0 ) Returns the heating power deposition (W) in a volume. Called if Heating=user. Parameter iv time p T q0 tau0 Type Units I R R R R R Meaning (-) (s) (Pa) (K) (W) (s) Volume number Simulation time Volume pressure Volume temperature Reference power (as from input) Reference heating time (as from input) Pipe Heating real function userPHeating (ij ,time ,x ,T ,q0 ,tau0 ) Returns the heating power deposition (W/m) in a pipe. Called if Heating=user for a junction of type Cpipe. The calculation is performed at all nodes of the junction, identified by their nodal coordinate. Parameter ij time x T q0 tau0 Type Units I R R R R R Meaning (-) (s) (m) (K) (W/m) (s) Junction number Simulation time Node coordinate from inlet Temperature at the node Reference power (as from input) Reference heating time (as from input) Pipe Heat Transfer Coefficient real function userHTC (ij ,time ,x ,T ,p , D ,Dh ,Reynol,HTC ) Returns the heat exchange (W/m2 K) in a pipe. Called if HTC=user for a junction of type Cpipe. The calculation is performed at all nodes of the junction, identified by their nodal coordinate. Parameter ij time x T p D Dh Reynol HTC Type Units I (-) R (s) R (m) R (K) R (Pa) R (Kg/m3) R (m) (-) R R (W/m2 K) Meaning Junction number Simulation time Node coordinate from inlet Temperature in the node Pressure in the node Density in the node Hydraulic diameter of the junction Reynolds number of the flow at the node reference heat transfer coefficient (as from input). © CryoSoft, 2013
