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Update BSM2-P CSTR Model #1520

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Update BSM2-P CSTR Model #1520

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8811b60
Use WaterTAP CSTR & update scaling factors
MarcusHolly Nov 7, 2024
74c6350
Merge branch 'main' into bsm2p_cstr_update
lbianchi-lbl Nov 7, 2024
dd28c01
Make additional improvements to scaling
MarcusHolly Nov 7, 2024
67ad3f7
Merge branch 'bsm2p_cstr_update' of https://github.com/MarcusHolly/wa…
MarcusHolly Nov 7, 2024
39a28fd
Re-scale AD heat term
MarcusHolly Nov 8, 2024
38c208a
Clean up flowsheet
MarcusHolly Nov 8, 2024
c99e282
Update BSM2-P GUI
MarcusHolly Nov 8, 2024
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8 changes: 6 additions & 2 deletions watertap/flowsheets/full_water_resource_recovery_facility/BSM2_P_extension.py
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Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,6 @@
UnitModelBlockData,
)
from idaes.models.unit_models import (
CSTR,
Feed,
Separator,
Product,
Expand Down Expand Up @@ -68,6 +67,7 @@
from idaes.models.unit_models.mixer import MomentumMixingType
from watertap.unit_models.translators.translator_asm2d_adm1 import Translator_ASM2d_ADM1
from watertap.unit_models.anaerobic_digester import AD
from watertap.unit_models.cstr import CSTR
from watertap.unit_models.dewatering import (
DewateringUnit,
ActivatedSludgeModelType as dewater_type,
Expand Down Expand Up @@ -537,6 +537,10 @@ def scale_variables(m):
if "conc_mass_comp" in var.name:
iscale.set_scaling_factor(var, 1e1)

for unit in ("R1", "R2", "R3", "R4"):
block = getattr(m.fs, unit)
iscale.set_scaling_factor(block.hydraulic_retention_time, 1e-3)
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Since we are fixing volume, does it make sense to scale this by inverse of volume/flowrate, perhaps using plant influent flowrate as a start?

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@MarcusHolly MarcusHolly Nov 7, 2024 •
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I've just tried doing this, but none of these new scaling factors work (i.e. the system fails to solve)

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what if we don't provide the scaling facotrs for the HRT as old version?

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Same thing - if we don't provide any scaling factors for HRT, the system fails to solve


for unit in ("R1", "R2", "R3", "R4", "R5", "R6", "R7"):
block = getattr(m.fs, unit)
iscale.set_scaling_factor(
Expand All @@ -550,7 +554,7 @@ def scale_variables(m):

iscale.set_scaling_factor(m.fs.AD.KH_co2, 1e1)
iscale.set_scaling_factor(m.fs.AD.KH_ch4, 1e1)
iscale.set_scaling_factor(m.fs.AD.KH_h2, 1e1)
iscale.set_scaling_factor(m.fs.AD.KH_h2, 1e2)

# Apply scaling
scale_variables(m)
Expand Down
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