Lesson 17 Current Loads on Structures

Keywords and Expressions

Flow：流体

Reynolds number=Re：雷诺数

VIV：涡激振动

In the design of offshore structures， current is generally considered time-invariant represented by its mean value. The current strength， however， may have a variation with water depth. The current introduces a varying pressure distribution around a member of the offshore structure generating a steady drag force on the structure in the direction of flow. Since the pressure distribution is not symmetric about the direction of flow， a transverse force is also generated on the structural member.

If a two-dimensional structure is placed in a uniform flow， then the force experienced by the structure will depend on the fluid density， the flow velocity and the frontal area of the structure encounterin ......     （共5015字）    [阅读本文]>>