Uncontrolled nodes
Note: . |
1. Make sure the node input attributes Capacity PrT and t0 PrT are set correctly for nodes of the control type uncontrolled.
Note:
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2. Check and adjust the parameters on the Uncontrolled tab.
Element |
Description |
VD function |
All VD functions are available for selection (Selecting VDFs for node types). |
Maximum tCur |
If this option has been selected, enter two values. The formula results in the user-defined maximum Note Since any VDF can be selected and a maximum tCur = MIN (tCur from node VDF; node t0 x Factor; Max tCur) Example with BPR function t0 = 20 s Saturation = 250 % a = 2, b = 4 tCur = 1583 s = 26.4 min Example with BPR2 function t0 = 20 s Saturation = 250 % a = 2, b = 4, b’ = 0.8 tCur = 103 s = 1.7 min A saturation of 250 % is not realistic in real life, but it may easily occur during assignment when the total volume is assigned to one shortest path. Make sure that the node attribute t0 PrT > 0 if the calculated value for tCur should also be greater than 0. |