Recent content by venkiee

As the anodes contribute around 5% to 8% of jacket weight, they play a significant role in increase of wave loads and the pile head reactions. In Well head jackets (usually light) the gravity loads contribute only 30% while environmental loads occupy rest 70%. The increase in CD CM has a major...

Another Paper I found...

I mentioned clearly that It's a fixed Jacket Structure. Sacrificial anodes are attached to the Jacket to avoid corrosion of steel under water. But when the anodes are attached to the tubular members, the members attract additional drag and inertia forces due to shape change. for this kind of...

Some Literature I found

While providing the CD CM values for members, if they are tubular, it is straight forward. If there is an attachment to it (like anodes) the CD CM need to be modified to counter the added mass and drag forces. Hence, when the jacket is in installed / operating condition in sea water, this...

This is how it would look like on a fixed jacket structure @ many places A typical Jacket http://www.richtechusa.com/upload/1335591599199121.jpg

This is how my attachment looks. Tube has its own CD factor. But when an anode is attached to it, for increased CD on the tubular, the attachment has to be considered for analysis purpose to calculate wave drag on main tubular. My question is the anode part. There are no clear guidelines how to...

Actually it is a sacrificial anode welded on a tubular underwater for an offshore structure. I's appreciate if can advise how to calculate its drag coefficient CD value

Hi all, I am Venkiee from Malaysia, a Marine Engineer by profession working for an Oil & Gas Company here.

Size of trapezium cross section is a=185mm b=265mm h=234mm and length of the bar is 3000mm the item is in sea water

I have a peculiar problem of calculating a trapezoidal bar (used as sacrifical anode) in offshore substructures. Can anyone advise me how to calculate the Cd value of such a section. Flow is along the length of the bar.