Ontwikkeling stroomgat en debiet bij dijkdoorbraak

Eén van de mogelijkheden voor het opslaan van energie is een bekken met een relatief hoge waterstand (Pomp Accumulatie Centrale). Het bekken is omringd met een dijk van zand, die vanwege de mogelijkheid van doorbreken een risico voor de aangrenzende gebieden betekent. Het maximale uitstroomdebiet bij dijkdoorbraak is een belangrijke grootheid...

Tides

Tidal analysis, tidal computations (basic equations, harmonic waves, lorentz method) tidal motion in seas and oceans.

Proposal for revision of ISO 4377: Flat-V weirs

In ISO/TC 113/SC 2/308 it was suggested that ISO 4377 could be significantly simplified as far as the calculation of discharge was involved. The proposal for revision is based upon this suggestion. The revision is fully based upon the material given in ISO 4377. In that respect no changes have been made. The result of the revision is, that i)...

Systems Analysis of Tides

Quite a long time the analysis of tidal observations has been based on the knowledge of the frequencies of the tidal components. These frequencies follow from an analysis of the tidal potentialor the tide generating force. This analysis also yields amplitudes and phases, but they are not equal to those of the real tidal components, called tqe...

Computation of the flow in shallow river bends

The mathematical model presented describes the flow in rivers of which: i the depth is small compared with the width, ii the width is small compared with the radius of curvature, iii the horizontal length scale of the bottom variations is of the order of magnitude of the width. Within these limits, the channel alignment can be arbitrary and it...

Spectraalanalyse van getijden en hun voorspelling volgens Munk en Cartwright

Toepassing van een aangepaste fourier analyse op getijden, die het probleem van "gaten" in de registratie oplost en een alternatief biedt voor de kleinste kwadraten methode.

De analyse van getijden

Getijvoorspellingen, astronomische analyse, fourierreeksen en fouriertransformatie.

Hydrodynamic forces and ship motions induced by surges in a navigation lock

This thesis treats the fluid and ship motion in a navigation lock and their mutual interaction as caused by surges, which occur in the chamber during filling or emptying. The other phenomena, which possibly play a role during these processes are ignored. The considerations of this treatise hold good for one ship in the chamber of the navigation...

Toepassingen van asymptotische methoden in de vloeistofmechanica

Collegedictaat b74 b.o.

Cavitation in horizontal pipelines due to water hammer

When designing a pipeline for the transport of a liquid one of the problems to be considered is the provision of a device to guard against low pressures. These low pressures can be caused, for example, by a sudden pump failure. The failure creates a negative pressure wave which travels in the downstream direction. Vapor pressure may be reached...