Best way I've found so far for oilflows is to: (1) Select surface and run mask points (random, say 100 points) (2) Use the stream tracer with custom source (being the mask points filter)
That should give some good answers. ParaView does need a form of snap-to-surface spline to overcome the issue Lorenzo had. =================================== Adriano Gagliardi MEng PhD Business Sector Leader Computational Aerodynamics Aircraft Research Association Ltd. Manton Lane Bedford Tel: 01234 32 4644 E-mail: [email protected] Url: www.ara.co.uk -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of David E DeMarle Sent: 29 March 2012 15:13 To: Richard GRENON Cc: [email protected] Subject: Re: [Paraview] Oilflow - Surface flow On Thu, Mar 29, 2012 at 9:58 AM, Richard GRENON <[email protected]> wrote: > Hi Lorenzo. > > The Stream Tracer works very well to follow a 3D streamline in a > volume, but I always got bad results to follow streamlines on a curved > surface. When you start from a point on a surface to follow a > streamline, the next point is found with a small step in the direction > of the tangent vector, but this new point is not on the surface if the > surface is curved. So the new point should be projected onto the surface before proceeding to the next step. I think the surface vectors and surface flows filters are meant to address this problem. > > Lorenzo a écrit : > >> Hi all; >> I managed to calculate the wall shear stress in openFoam using the >> command >> wallShearStress -latestTime >> and using the results (vector) as in input for the LIC! >> >> That's great! >> >> Now I'd have another question related to this topic: >> as I see the LIC is pretty heavy in paraview even though mine is a >> small geometry. I'm wondering, once I've loaded the wall shear >> stress, I could use the stream tracer on it to get more or less what >> I want. The only problem I'm having is that the line that generates >> the streamlines needs to be exactly on the surface of my body. Is >> there any way to attach the line to the surface? >> >> Thank you again! >> >> > > -- > Richard GRENON > ONERA > Departement d'Aerodynamique Appliquee - DAAP/ACI > 8 rue des Vertugadins > 92190 MEUDON - FRANCE > phone : +33 1 46 73 42 17 > fax : +33 1 46 73 41 46 > mailto:[email protected] > http://www.onera.fr > > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Please keep messages on-topic and check the ParaView Wiki at: > http://paraview.org/Wiki/ParaView > > Follow this link to subscribe/unsubscribe: > http://www.paraview.org/mailman/listinfo/paraview _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview ********************************************************************** This email contains information that is private and confidential and is intended only for the addressee. If you are not the intended recipient please delete it and notify us immediately by e-mailing the sender. Note: All email sent to or from this address may be accessed by someone other than the recipient, for system management and security reasons. Aircraft Research Association Ltd. Registered in England, Registration No 503668 Registered Office: Manton Lane, Bedford MK41 7PF England VAT No GB 196351245 ********************************************************************** _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
