Lesson 18 Wave Induced Loads on Slender Members

Keywords and Expressions

Submerged： 水中、水下的

Acceleration：加速度

Kinematics：运动学

Free-stream：自由流动

A simple harmonic motion， the flow around the cylinder will be more complex than the steady flow. In a simplified description we can say that the oscillatory flow over one cycle will change the low-pressure (wake) region immediately “behind” the cylinder every half cycle. As the flow changes direction， the low-pressure region will move from the downstream to the upstream side. Thus the force on the cylinder will change direction every half a wave cycle. Combining the effects of water particle velocity and acceleration on the structure， the loading on the structure due to a regular wave is computed from the empirical formula commonly known as the Morison ......     （共3985字）    [阅读本文]>>