Active water-wave absorbers
Active water-wave absorbers
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主动水波吸收器
DOI：
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发表时间：
1970
影响因子：
3.7
通讯作者：
J. Milgram
中科院分区：
文献类型：
--
作者：
J. Milgram
所考虑的问题是通过在通道末端的移动终端来吸收通道中的二维水波。建立了半无限流道的数学模型，根据线性化理论确定了问题的解。吸收所需的终端的运动是以在通道中固定点的测量表面高程上的线性运算的形式来确定的，因此可以设计出一种自启动吸波系统。提出了一种研究此类系统稳定性的理论方法。建立了该系统，并进行了实验研究。对于单色波和波脉冲，都证明了波的吸收。将波脉冲的吸收与与水平方向成10度角的固定海滩对同一脉冲的吸收进行了比较。
The problem considered is that of absorbing two-dimensional water waves in a channel by means of a moving termination at the end of the channel. The problem is formulated for a semi-infinite channel and solutions are determined according to a linearized theory. The motion of the termination that is needed for absorption is determined in the form of a linear operation on the measured surface elevation at a fixed point in the channel so a self-actuating wave-absorbing system can be devised. A theoretical method of studying the stability of such a system is presented. A system of this type was built and experiments with it are described. Wave absorption is demonstrated both for monochromatic waves and for wave pulses. The absorption of a wave pulse is compared with the absorption of the same pulse by a fixed beach making a ten degree angle with the horizontal direction.