# How to calculate Ship Wetted Surface

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 June 17, 2012, 07:06 How to calculate Ship Wetted Surface #1 New Member   Jaime Saelices Join Date: May 2009 Posts: 15 Rep Power: 10 Hi, I would like to see how change the wetted surface of a ship using 6-DOF and VOF models. How can I get, using field functions, the wetted surface of the ship?? Thanks a lot.

 June 17, 2012, 09:28 #2 Senior Member     Vieri Abolaffio Join Date: Jul 2010 Location: Always on the move. Posts: 308 Rep Power: 10 hi jamie you need to integrate the area of the vof>1 on the hull __________________ http://www.leadingedge.it/ Naval architecture and CFD consultancy

 June 17, 2012, 11:58 #3 New Member   Jaime Saelices Join Date: May 2009 Posts: 15 Rep Power: 10 Hi, How can I do that? Creating a new Field Function? Using Threshold, cell site? Thanks!

 February 12, 2015, 11:45 #4 New Member   Rickard Lindstrand Join Date: Feb 2015 Location: Gothenburg, Sweden Posts: 1 Rep Power: 0 hello, answer to old post, but for future reference: 1) make threshold for volume fraction above eg. 0.05, select the hull region 2) make report for sum, select area magnitude. select derived part -> the threshold 3) 'create monitor and plot from report', set manual normalization to 0.5 if symmetry along centerline of the ship is used.

February 12, 2015, 18:59
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Quote:
 Originally Posted by Rickard hello, answer to old post, but for future reference: 1) make threshold for volume fraction above eg. 0.05, select the hull region 2) make report for sum, select area magnitude. select derived part -> the threshold 3) 'create monitor and plot from report', set manual normalization to 0.5 if symmetry along centerline of the ship is used.
Just a quick note, it's important that in step 1 you select only the boundary of the hull, not the region.

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