Timeline for Determine use of pipes in a geometric network
Current License: CC BY-SA 3.0
11 events
| when toggle format | what | by | license | comment | |
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| Oct 9, 2013 at 9:26 | comment | added | Get Spatial | Damien, like @PolyGeo said, he only covered the flow direction question. What you are asking regarding pressure and flow in the pipes is a pretty complex hydraulic modeling exercise, and there are specialized packages that are designed for this exercise. Take a look at this answer to a different question, where I provide some links to software you may be interested in: gis.stackexchange.com/a/26220/1849 | |
| Jul 22, 2013 at 13:19 | history | edited | Damien | CC BY-SA 3.0 |
added 464 characters in body
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| Jul 22, 2013 at 12:09 | comment | added | Damien | All right, I understand ;-) In fact, I mostly asked this question by curiosity. In my problem, flow direction doesn't matter a lot. What is important is the charge of each segment. For instance, I do not expect some segments in the loops to carry a quantity of, say, water, as high as in the middle segment. Can ArcGis model the flows inside the network or should I turn to another software? | |
| Jul 20, 2013 at 0:28 | comment | added | PolyGeo♦ |
I have only attempted to answer the aside question of: why the "Set flow direction" command was able to give the direction of only one pipe, given the position of the source and the sink
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| Jul 19, 2013 at 21:00 | comment | added | Brad Nesom | Also thinking about the segments there is no restriction of the material in the looped areas but there is in the single segment going to sink. You can control these with barriers and costs. Barriers are like one way streets and costs are like 15 mph you can go to the nodes and make them restrict direction | |
| Jul 19, 2013 at 20:32 | answer | added | Chris M | timeline score: 3 | |
| Jul 19, 2013 at 13:43 | comment | added | Damien | Yes, if I flag my two extremities and calculate the shortest path, it uses this edge. However, it is logical since this is the only way to connect the two "groups". Is there any way to simulate the flow of water along this network by specifying a source and a sink? | |
| Jul 19, 2013 at 12:34 | comment | added | PolyGeo♦ | It's a while since I've looked at Geometric Networks but that arrow looks like it is at the midpoint of the shortest path route between source and sink. | |
| Jul 19, 2013 at 12:26 | comment | added | Damien | I am sorry, but I don't quite understand your question :-/ The arrow on the segment in the middle was automatically added by the "Set flow direction" tool once I defined the source and the sink features. Unfortunately, no direction was computed for any other edge | |
| Jul 19, 2013 at 11:07 | comment | added | PolyGeo♦ | Just a quick thought but is the one arrow head on the one route between source and sink rather than just on one of the many lines? | |
| Jul 19, 2013 at 10:32 | history | asked | Damien | CC BY-SA 3.0 |