Re: [Ffc] Bubble function

2010-04-12 Thread Andy Ray Terrel
On Mon, Apr 12, 2010 at 1:51 AM, Marie Rognes wrote: > Andy Ray Terrel wrote: >> >> Okay so Brezzi Fortin have just a bubble function with one node. >> Perhaps they meant P3 but their notation is ambiguous. >> ArnoldBrezziFortin1984 does call for the P3 in the original paper but >> then they menti

Re: [Ffc] Bubble function

2010-04-11 Thread Marie Rognes
Andy Ray Terrel wrote: Okay so Brezzi Fortin have just a bubble function with one node. Perhaps they meant P3 but their notation is ambiguous. ArnoldBrezziFortin1984 does call for the P3 in the original paper but then they mention using 2 P4 bubble functions for the next velocity order. If I do

Re: [Ffc] Bubble function

2010-04-11 Thread Andy Ray Terrel
Okay so Brezzi Fortin have just a bubble function with one node. Perhaps they meant P3 but their notation is ambiguous. ArnoldBrezziFortin1984 does call for the P3 in the original paper but then they mention using 2 P4 bubble functions for the next velocity order. If I do enrich with 2 P4 bubbles

Re: [Ffc] Bubble function

2010-04-11 Thread Marie Rognes
Andy Ray Terrel wrote: Okay I see. Its just a third order bubble, sometimes I send mail before I think. The mini element is a first order bubble or at least that's what Brezzi Fortin say. That depends on your definition of the word "is". The "velocity" part of the (lowest order) Mini ele

Re: [Ffc] Bubble function

2010-04-10 Thread Andy Ray Terrel
Okay I see. Its just a third order bubble, sometimes I send mail before I think. The mini element is a first order bubble or at least that's what Brezzi Fortin say. -- Andy On Fri, Apr 9, 2010 at 8:43 PM, wrote: >> Is there anything telling how the bubble functions are defined? >> >> For ex

Re: [Ffc] Bubble function

2010-04-09 Thread meg
> Is there anything telling how the bubble functions are defined? > > For example with the Mini example: > > P1 = VectorElement("Lagrange", "triangle", 1) > B = VectorElement("Bubble", "triangle", 3) > Q = FiniteElement("Lagrange", "triangle", 1) > Mini = (P1 + B) * Q > > Does B consist of 3 bubble

[Ffc] Bubble function

2010-04-09 Thread Andy Ray Terrel
Is there anything telling how the bubble functions are defined? For example with the Mini example: P1 = VectorElement("Lagrange", "triangle", 1) B = VectorElement("Bubble", "triangle", 3) Q = FiniteElement("Lagrange", "triangle", 1) Mini = (P1 + B) * Q Does B consist of 3 bubble functions in som