100 year wave and 100 year current
100 year wave and 100 year current
(OP)
Hi,
Can anyone enlighten me this?
Will 100 year wave and 100 year current occur at the same time? I understand that some industrial codes specified that for operation condition we can adopt 100 year wave with 10 year current and 10 year wave with 100 year current but some states that 100 year return period must be use in design.
Please provide reference if available.
Rgds
Can anyone enlighten me this?
Will 100 year wave and 100 year current occur at the same time? I understand that some industrial codes specified that for operation condition we can adopt 100 year wave with 10 year current and 10 year wave with 100 year current but some states that 100 year return period must be use in design.
Please provide reference if available.
Rgds





RE: 100 year wave and 100 year current
If you can give a little more information
RE: 100 year wave and 100 year current
Rgds
RE: 100 year wave and 100 year current
TTFN
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RE: 100 year wave and 100 year current
RE: 100 year wave and 100 year current
My point was that rogue waves exceed 100 yr wave heights and are actually quite routine. Therefore, the likelihood of a 100 yr wave in conjunction with a 100 yr current is just almost as likely as a 100 yr current by itself.
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: 100 year wave and 100 year current
Also think about directionality - the max current direction is probably not the max wave direction. So what do you combine;
a) the max wave (from direction X) with the current from direction X, or...
b) the max current (from direction Y) with the wave height associated with direction Y
What is probably more relevant is - what does the design code ask for.
If you are designing a mooring system, the classiifcation/certification rules might demand that the loads on the floating structure are derived from the assumed 100 yr environment (wind, waves and current). This is maybe conservative, but if that is what the rules/codes ask for - its what you have to do (you have to assume that the factors of safety in the code take account of this conservatism).
And so they should - the highest wave does not necessarily produce the highest loads. This is the case for mooring loads and also structural loads on vessel huls (these loads are wave period dependent).
Of course, depending on the application - you could argue to use the 50 year return period data. For some short field life applications, this has been accepted.
You must be designing to some sort of code ?!
RE: 100 year wave and 100 year current