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handle situation of pumps defined as "constant power" #99

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jjstickel opened this issue Aug 3, 2020 · 1 comment
Open

handle situation of pumps defined as "constant power" #99

jjstickel opened this issue Aug 3, 2020 · 1 comment
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@jjstickel
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EPANET input files sometimes specifies pumps as constant power. This is nonphysical and will result in constant-valued objective functions (at least with respect to that pump). We can assume the specified power is the power at the BEP, but more information is needed to get flow and head at the BEP. It seems the way out is to run a few flow-feasibility simulations of the network and examine the flows through the pump.
@jjstickel
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The "Kentucky" test networks largely define pumps as constant power (POWER designation in the inp file). Kentucky network 3 (ky3.inp) seems to be the smallest.

tasseff added a commit that referenced this issue Jan 14, 2021
@tasseff
Add error message for #99.
b8b45ee
@tasseff tasseff added this to the Functionality for Solving Maximum Demand Delivery Problems milestone Sep 3, 2021
tasseff added a commit that referenced this issue Sep 3, 2021
@tasseff
Begin to address input handling for #99. Rename head_curve_form to …
8310470 
…`pump_type`.
@tasseff tasseff removed this from the Functionality for Solving Maximum Demand Delivery Problems milestone Dec 5, 2022
hskkanth pushed a commit to hskkanth/WaterModels.jl that referenced this issue Feb 15, 2023
@tasseff @hskkanth
Begin to address input handling for lanl-ansi#99. Rename `head_curve_…
4825842 
…form` to `pump_type`.
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@jjstickel @tasseff