Laboratory study on separating unidirectional irregular incident and reflected waves
How to separate oblique irregular incident and reflected waves in front of vertical wall mode in laboratory basin is studied, and a kind of two points method that can be used to separate the oblique incident wave in which the two gauges can be placed at any direction in front of vertical wall is proposed. To analyze the factors which can influence the separated results, the results with different conditions, such as the position of the two distinct gauges, the different sea bed height, the different incident wave height and peak frequency are tested. It shows that there are evidently different among those conditions, in partically, the influence of the position of two wave gauges is more dominant.
Abstract A layer of random defects in the simple cubic Ising model with nearest neighbor ferromagnetic interactions of strength J is considered. Using the real space renormalization group method we calculate defect free energy in the whole temperature range. Specifically, we analyze: the layer of diluted defects, the layer of spin-glass type defects, and the layer of mixed defects. The free energy is strongly dependent on the value of couplings between the defect and the bulk.