Just wondering whether it's possible to add 'free text' anywhere inside the custom text file where I am defining the specific speed of a turbine? I'm modelling a few different options so it would be good for my own reference purposes to be able to add a line of identifier text containing (for example) creation date and rated conditions. The trial I've done with adding text to the first line suggests not, but I just thought I would confirm.
Thanks, Liz
Hello Liz,
Good question. I'll check with a few colleagues on this. In the meantime, consider using the Notes tab of the pump definition that uses the custom specific speed.
Regards,
Jesse DringoliTechnical Support Manager, OpenFlowsBentley Communities Site AdministratorBentley Systems, Inc.
Thanks Jesse. We're using the notes field but it would be helpful to be able to read the info in the text file too.
Further to this - wondering whether the specific speed in the top line of the text file [SPECIFIC SPEED (US/SI): X / Y] is actually used within the calculation, or whether it is just a text definition which then appears for selection within the transient properties of the turbine? If the latter then we could number them sequentially for example.
I confirmed that, in the QuadrantCurves.txt file, you can add notes on any lines before the [PUMPS] section, as long as they don't contain "[PUMPS]". For example you could do something like this:
*** HAMMER AUXILIARY DATA FILE ***
Please read these notes regarding the curves in this library
Specific speed 12345: <notes here....>
Specific speed 15243: <Notes here....>
...
[PUMPS]
SPECIFIC SPEED (US/SI): 12345 / 54321
The actual number that identifies the specific speed (such as 1280) is just a label, but you need to identify both the US and SI units version of it, and it must be numeric. So, you could number them like that, but the intent is to identify the actual specific speed value corresponding to the curve. So, when viewing your specific speeds along with others in the list, it could potentially cause confusion if they don't all follow that standard. It might be best to enter the actual specific speed and place a comment at the top as mentioned above, for the details you need to document.
Also as a side note, if you're using the 64-bit version of HAMMER, make sure you modify the copy of the QuadrantCurves.txt file in the "x64" folder in order for it to be recognized. Reference:
communities.bentley.com/.../11104.custom-quadrant-curve-not-being-recognized.aspx
Answer Verified By: lizh
A Support Solution article has been created to document this: http://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/11104.custom-quadrant-curve-not-being-recognized To clarify, you could use the lines at the top to place notes for either pumps or turbines that were added to the file.