Activities per year
Here, we studied the implications of applying Lorentz’s energy criterion in an instantaneous sense, so that an unsteady friction coefficient r(t) adjusts to the temporal development of natural wind-driven flows. This new bed-stress parametrisation was implemented in an idealised model of a single channel, forced by time-varying signals of wind stress (acting over the entire domain) and surface elevation (at the channel mouth). The solution method combines analytical solutions of the cross-sectionally averaged linearised shallow-water equations, obtained in the frequency domain, with an iterative procedure to determine r(t)
Model results, compared with a reference finite-difference solution retaining the quadratic bed shear stress, show that this new approach accurately captures the qualitative and quantitative aspects of the surge dynamics (height and timing of surge peaks, sloshing, friction-induced tide-surge interaction) for both synthetic and realistic wind forcings
FingerprintDive into the research topics of 'Unsteady linearisation of bed shear stress for idealised storm surge modelling'. Together they form a unique fingerprint.
- 1 Examination
Roos, P. C., Lipari, G., Pitzalis, C., Reef, K. R. G., Campmans, G. H. P. & Hulscher, S. J. M. H., 18 Mar 2022.
Research output: Contribution to conference › Poster › AcademicOpen Access
Roos, P. C., Pitzalis, C., Lipari, G., Reef, K. R. G. & Hulscher, S. J. M. H., 28 Jun 2017. 3 p.
Research output: Contribution to conference › Abstract › AcademicOpen AccessFile