Just a correction is that it is
a Coanda effect. Or wall effect which is a fluid which attaches itself to a
wall. Hugh
In looking at how I wish to configure my side
thrusters, I'm considering tilting my trusters towards the point of the bow
when horizontal 3 to 7 degrees. This is to negate the friction or thrust
attachment as the outflow of the thrusters hit the hull. A
principle they refered to as the gonda (SP) effect. I don't have the
correct spelling, so my searches have not come up with any relevant data.
Perhaps one of you gentlemen know.
After looking at the below data I would be
interesting in your guys input.
Flowserve
Data
Pleuger
Type WFSD Azimuthing Thrusters
http://thruster.flowserve.com
The usefull thrust of a thruster, can be adversely
affected by thruster hull, and thruster thruster interaction loses.
They use a 7 degree tilted axes to there thrusters
to reduce thruster loses by up to 15 to 25% due to friction or thrust
attachment. A principle refered to as the gonda (SP) effect.
Even when mounted at a mid point of the
longnitudinal portion of a ship thruster loses can be 10 to 15%.
Flowserve uses a 97 degree bevel gear that creates
there 7 degree tilted axes thruster angle. This eliminates thrust attachment
and associated losses.
The 7 degree tilted axes thrusters signifiagantly
reduce conditions for adverse inflow conditions when dealing with thrusters
pointing toward thrusters."
http://www.youtube.com/watch?v=PzjFEe47bzA
Regards,
Szybowski
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