Thanks again for your excellent series on computational science and engineering using open source softwares. I have a question about FEATool. Is it open source? Do you recommend it?
So glad that you like the series:) I have never worked with FEATool, so I can't say if I recommend it or not. BTW, it is not an open-source tool (www.featool.com/purchase/). It seems that what they offer is an integration of multiple open-source solvers with a GUI developed in MATLAB, but it's not free.
Great video series. Although, why do you only integrate with respect to x when integrating over a finite element? Shouldn't it be over all independent spatial variables i.e. instead of dx, shouldn't you write dV intstead (where dV=dx dy ....)? At the 4:19 mark for example. Or is there something special about integrating only with respect to x? Thanks!
a good point :). it should always be integrated on the whole domain and not just x. for example, you can see correct mathematical notation in the example described later, like at 13:13. the reason behind the notation you mentioned lays in the fact that these materials are coming from FEniCS community, in which the notation "dx" is used in the codes to describe the integration, like here: ua-cam.com/video/0CBNLEP9Vyc/v-deo.html&ab_channel=TuxRiders
![[FreeFEM 4] Finite element spaces and function approximation in FreeFEM](http://i.ytimg.com/vi/j4Z5Xb85dEs/mqdefault.jpg)
Thanks again for your excellent series on computational science and engineering using open source softwares. I have a question about FEATool. Is it open source? Do you recommend it?
So glad that you like the series:)
I have never worked with FEATool, so I can't say if I recommend it or not. BTW, it is not an open-source tool (www.featool.com/purchase/). It seems that what they offer is an integration of multiple open-source solvers with a GUI developed in MATLAB, but it's not free.
Great video series. Although, why do you only integrate with respect to x when integrating over a finite element? Shouldn't it be over all independent spatial variables i.e. instead of dx, shouldn't you write dV intstead (where dV=dx dy ....)? At the 4:19 mark for example. Or is there something special about integrating only with respect to x? Thanks!
a good point :). it should always be integrated on the whole domain and not just x. for example, you can see correct mathematical notation in the example described later, like at 13:13. the reason behind the notation you mentioned lays in the fact that these materials are coming from FEniCS community, in which the notation "dx" is used in the codes to describe the integration, like here: ua-cam.com/video/0CBNLEP9Vyc/v-deo.html&ab_channel=TuxRiders
@@TuxRiders Okay cool. Yes good point, I noticed in the book by Langtangen that dx is used instead of dV or dA. Thanks for the reply!