I have a question about fitness. I have a model that has gotten an Infinity fitness and now is down to 340 quadrillion. I didn't know this was even possible to be that high. I have been doing models for small towns for nearly 15 years, averaging about 1 per year and the highest fitness i have ever seen on the first Darwin calibrator run was around 1000 when an elevated tank level was set at an incorrect elevation.
No matter what i do, the fitness remain the same.
Aaron,
It can be difficult to provide any answers without seeing the model to examine all the data, but your best option in this case is probably to use the steps in this wiki to help locate the discrepancy. It likely references the help documentation on Calibrator, which the last time I looked was pretty thorough. You might also want a support engineer to have a look at your model too because it's difficult to give any concrete ideas without having an idea of what is in the model. The link at the bottom of the this wiki to Using Darwin Calibrator might also be a good place to look for some ideas.
Mark
My advice is is that before you even start thinking about using Darwin Calibrator, you spend a few days calibrating the model manually. This will help you correct any gross errors. You can use the manual calibrator runs for this. This should provide you with a good feel for where you are likely to need help from Darwin and point you to what needs adjustments. For example, there may be some systematic error in your data or you have some serious connectivity errors in your model.
Only once you're fixed your major problems, should you get into optimized runs.
Here's a wiki that may help.
https://communities.bentley.com/products/hydraulics___hydrology/f/haestad-hydraulics-and-hydrology-forum/135896/water-supply-system-network-calibration-methodology/411572#411572
Thank you, I received all of the data and testing from third parties. Opening the shapefiles there is issues with the pipe data. I will start with the distribution system and try to confirm all of the data separately.
Thank you again.
Yes, that's the correct approach. Darwin calibrator works by adjusting roughness, demands or closed valves. If you are having very large discrepancies between model and field data, you need to understand the reasons for the discrepancies and have a reasonable model before you use Darwin.
If the field data shows 60 psi pressure and the model is saying 15,497 psi, you need to find out why and fix it.
If you are interested in calibration in general, send me your email address and I can send you some papers to help guide you.
Tom