Use of HEC-HMS in floodwave propagation simulations
DOI:
https://doi.org/10.15381/rif.v23i3.20299Keywords:
HydraulicsAbstract
A delicate feature of the flood propagation simulation performed by the program HEC-1 with the
option of the modified Puls method with normal flow approximation is constituted by the estimation
of the quanta parameter NSTPS. While it is recognized to be a parameter that one should calibrate, it
is usually recommended that it be estimated as the ratio (wave travel time/integration time step). In
this paper it is shown that numerical experiments conducted with the program FEQ, retained as
standards, when compared with HEC-1 solution, do not confirm the above estimate. The preliminary
results presented here suggest that the ratio (time to peak of outflow hydrograph/time to peak of
inflow hydrograph) may be a more meaningful, but strongly event dependent,parameter.
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Copyright (c) 2020 Jorge Bueno
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