Collection: research
(45,061 - 45,080 of 48,021)

Pages

document
Svasek, J.N. (author), Battjes, J.A. (author)
Coastal engineering problems concerning wind waves and swell can be solved with the aid of hydraulic or mathematical models. The irregular wave field i.e. the state of the sea surface can be described in a sufficient way for engineering problems either by parameters such as significant wave height and mean wave period, or in the form of power...
conference paper 1969
document
Paape, A. (author)
Symposium organised at Delft Hydraulics on the development of research in waves and wave structure interaction.
report 1969
document
conference 1969
document
Ferguson, H.A. (author)
The hydraulic model is playing an increasing part in the process of hydraulic designing and it seems even to have taken over the dominant position that experience and tradition had held for such a long time. But, however important the model tests have become, they are not the only means available to the designer, nor does he have to rely solely...
conference paper 1969
document
de Jong, J. (author)
On March 24, 1969, the new wind-wave flumes at the Delft Hydraulics Laboratory (Figures 5 and 6) were officially opened by the Director-General of the Rijkswaterstaat. The design work started in 1964, and the building and installations 1tlere completed in November 1968. A general description of this equipment and some insight into its underlying...
conference paper 1969
document
Rance, P.J. (author)
Information, published to date, or. the effect of viscosity on wave forces is very indefinite. A series of experiments carried out in the Pulsating Water Tunnel at the Hydraulics Research Station Wallingford under closely, controlled conditions clearly defined the variation of primary forces with Reynolds Numbers up to 6 x 10 5 . Additionally...
conference paper 1969
document
Sommet, J. (author), Vignat, P. (author)
This paper describes a method of calculating exciting forces on free or fixed bodies in waves and its application to some examples. The method lays upon an accurate computation of the transitory pressures applied by a potential flow on a submerged body. The calculation may be used for the case of a free body in complex waves. First, we give the...
conference paper 1969
document
Jensen, J.A. (author)
It is described why, and to what extent the practicing engineer makes use of model tests in his design of rubble mound breakwaters. Furthermore an example is shown from practice illustrating the application of models for investigation of wave penetration into harbours. Especially the way in which model tests can confirm and supplement...
conference paper 1969
document
Dietz, J. (author), van Staal, G. (author), Siefert, W. (author), Venis, W.A. (author)
For a safe and efficient dimensioning of the Eider Evacuation Sluices it was necessary to know the magnitude and probability of the occurring wave forces. To determine those data a model investigation has been carried out in one of the wind flumes of the Delft Hydraulics Laboratory in charge of and in co-operation with the Bundesanstalt fur...
conference paper 1969
document
Führböter, A. (author)
A special impact generator was constructed in order to produce water impacts with velocities which are not available in scale models with waves. The water impact was generated by a jet suddenly striking upon a measuring area. Even under same conditions of impact, stochastic scattering of the peak pressures was observed; but for all test series...
conference paper 1969
document
Skladnev, M.F. (author), Popov, I.Y. (author)
A description is presented of a wave flume with a pneumatic wave productor, which can generate waves up to 2 m high. The principal mental results are outlined of dynamic wave action on the slope protection of an earth dam, with the slope protection formed of slabs with open joints placed on an artificial filter layer. Data are cited on wave...
conference paper 1969
document
Berge, H. (author), Traetteberg, A. (author)
This paper deals with model tests conducted at the Delft Hydraulics Laboratory (DHL) and the River and Harbour Laboratory at the Technical University of Norway (RHL) for the design of the Europoort Breakwater. A series of tests with regular waves was conducted at the DHL from which the design of the breakwater was decided. The chosen design was...
conference paper 1969
document
d' Angremond, K. (author), van Oorschot, J. (author)
Wind-wave flumes have been added to the laboratory facilities since a long time, in order to simulate natural wind lv-aves. Most wind-wave flui'nes have been equipped in addition with mechanical (regular) wave generators to avoid extreme small model scales. For some time past a programmed (irregular) wave generator has been installed in one of...
conference paper 1969
document
Svasek, J.N. (author), Battjes, J.A. (author)
Coastal encineering problems concerning wind waves and~ell can be solved with the aid of hydraulic or mathematical models, The irregular wave field i.e. the state of the sea surface can be described in a sufficient way for engineering problems either by parameters such as significant wave height and mean wave period, or in the form of power...
conference paper 1969
document
Wiegel, R.L. (author)
Three methods of presenting wave data are discussed: the significant wave (including the "design wave" concept), the wave spectrum, and the directional spectra. Their use in calculating wave forces on pile supported structures is described, with a discussion of the relative usefulness of the linear versus the non-linear approach. The concept of...
conference paper 1969
document
Lebreton, J.C. (author), Cormault, P. (author)
This memorandum proposes a mathematical approach of the interactions between a non-viscous fluid with a free surface and an assembly of structures composed of shells, whether fixed or not, partially or totally immersed in the fluid. Some fundamental aspects of the problem, such as the effects of the free surface and of the mutual influence of...
conference paper 1969
document
Zunderdorp, H.J. (author)
Until after the second World War, the ocean was regarded by the oil industry only as a cheap means of transportation. Before the war some timber structures very close to the shoreline had been constructed, but drilling for oil on the continental shelf did not really start until 1947, when the first steel platform was erected in 20 ft. of water...
conference paper 1969
document
Rogan, A.J. (author), Bonnéfille, R. (author)
The general purpose of this research is to study wave action on rubble mound breakwaters with periodic waves on the one hand, and random wind generated Waves on the other hand, and to compare the effects of these two types of waves by use of the storm duration. With the first series of periodic waves experiments, we obtained the destruction of...
conference paper 1969
document
Battjes, J.A. (author)
List of Contents and discussions of the symposium "research on wave action".
conference paper 1969
document
Lundgren, H. (author)
At the inauguration of two advanced wind-wave flumes in the Netherlands, three decades after BAGNOLD's pioneer work, and one decade after the Haringvliet sluice investigation and the joint Dutch-Danish investigation of the Hanstholm breakwaters, it seems appropriate to summarize current knowledge on wave shock phenomena. These may be classified...
conference paper 1969
Collection: research
(45,061 - 45,080 of 48,021)

Pages