### Re: [deal.II] discontinous contour over elements

: Re: [deal.II] discontinous contour over elements On 1/18/20 5:02 PM, David Eaton wrote: > I just use tecplot directly visualize the results. The vorticity contour from > my simple code is continuous, and the results from deal.II is discontinuous > (without L2 projection). Ah

### Re: [deal.II] discontinous contour over elements

? From: Wolfgang Bangerth Sent: Sunday, January 19, 2020, 12:49 AM To: David Eaton; dealii@googlegroups.com Subject: Re: [deal.II] discontinous contour over elements On 1/18/20 9:25 AM, David Eaton wrote: > Thank you for your explanations. Basically I formed a weak form of the

### Re: [deal.II] discontinous contour over elements

, I am puzzled at why I did not read it in the FEM books before. Best David From: Wolfgang Bangerth Sent: Saturday, January 18, 2020, 11:58 PM To: David Eaton; dealii@googlegroups.com Subject: Re: [deal.II] discontinous contour over elements On 1/17/20 9:11 PM

### Re: [deal.II] discontinous contour over elements

From: dealii@googlegroups.com on behalf of Wolfgang Bangerth Sent: Thursday, January 16, 2020 12:05 AM To: dealii@googlegroups.com Subject: Re: [deal.II] discontinous contour over elements On 1/14/20 10:04 PM, David Eaton wrote: > > Thank you for your suggestions. I am

### Re: [deal.II] discontinous contour over elements

points. This is a procedure we use to set the initial conditions in Lethe when the initial condition is a complex function (for instance a Taylor-Green vortex). On Wednesday, 15 January 2020 11:22:52 UTC-5, David Eaton wrote: I understand the C0 element is piecewise linear across elements. However

### Re: [deal.II] discontinous contour over elements

Subject: Re: [deal.II] discontinous contour over elements On 1/15/20 9:22 AM, David Eaton wrote: > I understand the C0 element is piecewise linear across elements. However, I > did not experience the same issue in my own C++ code while I use C0 element > with the Petrov Galerkin stabilizat

### Re: [deal.II] discontinous contour over elements

? Thanks D. From: dealii@googlegroups.com on behalf of Wolfgang Bangerth Sent: Thursday, January 16, 2020, 12:05 AM To: dealii@googlegroups.com Subject: Re: [deal.II] discontinous contour over elements On 1/14/20 10:04 PM, David Eaton wrote: > > Thank you fo

### Re: [deal.II] discontinous contour over elements

/0521113601) Please feel free to reach out if you have more questions. Best Bruno On Monday, 13 January 2020 20:29:53 UTC-5, David Eaton wrote: Thanks Wolfgang and Praveen for providing suggestions. I have tried to debugging this code for a while. I have attached this simple code on this email. I

### Re: [deal.II] discontinous contour over elements

are using only C0 elements for the velocity. If you are averaging the computed vorticity or obtaining vorticity by an L2 projection, then they would be continuous. Maybe your other codes are doing something like this ? Best praveen On 13-Jan-2020, at 9:12 AM, David Eaton mailto:dealiidiscuss