TY - JOUR
T1 - Selecting a series of storm events for a model-based assessment of combined sewer overflows
AU - Leimgruber, Johannes
AU - Steffelbauer, David B.
AU - Krebs, Gerald
AU - Tscheikner-Gratl, Franz
AU - Muschalla, Dirk
PY - 2018
Y1 - 2018
N2 - The hydraulic verification of combined sewer systems as well as the assessment of combined sewer overflows (CSOs) can be conducted using a hydrodynamic model. Unfortunately, long-term simulations with hydrodynamic models for the assessment of CSOs can cause unacceptably long computation times. Using only a series of storm events instead of a precipitation continuum can reduce this time and enables parallel simulation of single storm events. We introduce a method to select this series of storm events. The method’s parameters have been optimized to replicate the overflow volume of the continuous simulation and to minimize the overall computation time. This optimization revealed a generally applicable parameter set that results in series of storm events that are shorter than the precipitation continuum by 86.2–95.2% for the investigated cases. Additionally, the deviation of overflow volume between continuous simulation and series simulation ranges between only 0.1% and 4.1%.
AB - The hydraulic verification of combined sewer systems as well as the assessment of combined sewer overflows (CSOs) can be conducted using a hydrodynamic model. Unfortunately, long-term simulations with hydrodynamic models for the assessment of CSOs can cause unacceptably long computation times. Using only a series of storm events instead of a precipitation continuum can reduce this time and enables parallel simulation of single storm events. We introduce a method to select this series of storm events. The method’s parameters have been optimized to replicate the overflow volume of the continuous simulation and to minimize the overall computation time. This optimization revealed a generally applicable parameter set that results in series of storm events that are shorter than the precipitation continuum by 86.2–95.2% for the investigated cases. Additionally, the deviation of overflow volume between continuous simulation and series simulation ranges between only 0.1% and 4.1%.
KW - Storm events separation
KW - stormwater management
KW - urban drainage modeling
UR - http://www.scopus.com/inward/record.url?scp=85052075864&partnerID=8YFLogxK
U2 - 10.1080/1573062X.2018.1508601
DO - 10.1080/1573062X.2018.1508601
M3 - Article
AN - SCOPUS:85052075864
SN - 1573-062X
VL - 15
SP - 453
EP - 460
JO - Urban Water Journal
JF - Urban Water Journal
IS - 5
ER -