The first figure below presents the overall configuration of the jumper hoses, illustrating the influence of wake interference effects. Naturally the configuration of the upstream jumper hose is the same in both cases, but the configuration of the downstream jumper hose varies considerably. The second figure presents the clearance distribution between the jumper hoses.
Jumper Hose Configurations
Jumper Hose Clearance Distribution
The table below shows a sample of the detailed wake output for the downstream structure. Here L is the distance in the direction of the current between an element on the downstream structure and the corresponding upstream element. T is the distance normal to the direction of the current between the downstream and upstream elements. It can be seen that the effect of the wake has been to reduce the current operating on the downstream jumper, and also to introduce a lift force. The effect of the lift force is to align the risers in the direction of the current (i.e. reduce the magnitude of T).
Detailed Wake Analysis Output