The results of physical model tests indicate that the property of wave dissipation of the Double - Column Block is better than that of the Warock or Igloo Block of Japan, or that of the Tender Block of Taiwan Area;
The result of the experiment and research has shown that, the reduction factor of horizontal wave force is generally between 0.6 and 0. 8, which can meet the requirements of wave dissipation and the decrease of wave reflection and the perforated box caisson type breakwater with narrow orifices is an acceptable type.
It is found that when the dimensionless porous-effect parameter G0 is equal to half the total plate number, the wave dissipation reaches a maximum, and only 50% of the incident wave energy remains in the reflected and transmitted waves.
Then, the obtained energy spectrum of the generated torsional Alfven wave is considered as boundary condition of coronal loop to calculate the subsequent wave dissipation.
Experiments for both regular and irregular waves for the measurement of wave dissipation were carried out by the authors It is indicated that the results by the authors' proposed method agree well with the model test data.
The discussion is slightly extended to the case of small damping, to illustrate in a compact form the fact that the mean zonal acceleration is determined by a forcing due to wave transience plus that due to wave dissipation.
Using empirical data on the short gravity wave dissipation spectrum, a relation for the capillary wave spectrum is derived from the equation of energy balance of capillary waves.
In addition, a Fourier analysis of the fully discrete scheme is conducted which shows the dependence of the frequency error and wave dissipation on the time step and mesh size.
This paper sums up the investigative results of submerged dike at home and abroad Some problems of submerged dike design,for example, rational section type relative elevation of dike top a/H(α—water depth over the top of submerged dike;H—original wave hight befoe submerged dike) .Performance of wave dissipation n=H_1/H(H_1—wave hight behind submerged dike) and stability weight of block W_z,are analysed and dis- cussed.
The wave attenuation during its propagation in current by bottom friction is discussed in this paper. By using the concept of the equivalent bottom energy loss, the bottom stress is linearized. Based on the principle of conservation of wave action flux, the equation for the calculation of wave spectra transformation in current is derived. Experiments for both regular and irregular waves for the measurement of wave dissipation were carried out by the authors It is indicate...
Taking the permeable breakwater(with a high-level deck)at the estury of Yangtze River as a practical example,this paper makes description on the model test for determining the wave permeability factor KT in a wave-wind test basin.The test results showed that the permeated wave height inside the mole was related to the water depth, wave characteristics,width of mole and the submerged depth of wave-damping plate. The arrangement of wave-damping plate and wind velocity would...