How did I set two kind of slope in channel ?

 Register Blogs Members List Search Today's Posts Mark Forums Read

 March 2, 2009, 21:21 How did I set two kind of slope in channel ? #1 Marco Guest   Posts: n/a Sponsored Links Dear Experts : If I want to set a slope in channel. I can set gravity component in the X-direction. But I will set two kind of slope now. Besides uses Auto CAD to construct the slope. Did there have any methods to solve? Another question. If I construct a Geometric model. On side wall's boundary condition whether to need to set "wall boundary"? Thanks your help!

 March 3, 2009, 19:15 Re: How did I set two kind of slope in channel ? #2 MC Guest   Posts: n/a What do you mean you will have two slopes? Will they be in different directions or just different parts of the geometry? The main difference between a wall and a symmetry boundary is there is no friction at the symmetry boundary. So if you have heat applied to the wall or if you are interested in viscous stress along the wall then you would use the wall boundary.

 March 3, 2009, 21:45 Re: How did I set two kind of slope in channel ? #3 Marco Guest   Posts: n/a Thanks MC~ Yes, I mean that have a channel but there have two kind of slopes(that is upstream slope is 1 degree downstream slope is 5 degree). How did I set two kind of slopes, I don't want to use Auto CAD to draw slopes of channel. Thanks your help!

 March 4, 2009, 11:37 Re: How did I set two kind of slope in channel ? #4 MC Guest   Posts: n/a I think either way you will have to use AutoCAD unless your channel is simple geometry then you could create it in FLOW-3D and rotate it to the angled slope.

 March 5, 2009, 05:25 Re: How did I set two kind of slope in channel ? #5 Marco Guest   Posts: n/a Very thanks your help, MC.

 March 5, 2009, 07:21 Re: How did I set two kind of slope in channel ? #6 Armen A. Ghirghidov Guest   Posts: n/a There is another problem with slope channel - mesh roughness (as we call it). If you rotate your channel in AutoCAD you will get roughness due to vertical orthogonal cubic mesh. That is the problem. I used component of gravity. Regards.

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post Marco FLOW-3D 4 January 11, 2013 12:53 Johnson FLUENT 1 May 7, 2011 03:24 alefem FLOW-3D 1 May 28, 2010 11:15 indy OpenFOAM Installation 7 April 3, 2009 09:40 jonititan OpenFOAM Installation 4 November 6, 2005 05:16