飞碟型网箱的水动力学数值计算法

依据牛顿第二定律和角动量守恒定律,导出了波、流共同作用下飞碟型网箱的水动力学方程组,并给出了数值求解。在流速1.5m·s-1、波长50m、周期8s、水深30m的情形下,计算结果显示,波高大于5.5m时波力大于流力,反之后者占主导。网箱受力呈周期性、不对称变化。相同情形下,设置水层下降5m时,受力峰值由水面的21.1t降至10.4t,后者只有前者的49.3%,表明网箱设置水层下降可以较大程度地减缓其受力。计算所用的部分参数尚需通过现场实测来检验和修正。

Hydrodynamic numerical solution to SeaStation cage

Based on the Newton. s second law and the conservation law of angular momentum, the hydrodynamic equations of the SeaStation cage under the action of both waves and currents were derived, and their numerical solut ion has been obtained. Given the current velocity of 1. 5 m#s- 1, wave length of 50 m, period of 8 s, depth of 30 m, the results showed that the force of waves of heights over 5. 5 m was greater than current force, and that the force varied periodically and asymmetrically. On the contrary side the current force became dominant force. Under the same case, the maximum force decreased from the 21. 1t of sea surface to 10. 4t, when the cage lowered 5 m, so it is possible to decrease the force acted on SeaStat ion by lowering its depth. Some parameters used in the paper need verifying and modifying through further survey .