Re: [firedrake] [EXTERNAL] Reg spectral (hp) tetrahedral element
I realised I forget to leave the mailing list in CC, reintroducing it.
On 9 Jul 2021, at 18:21, Venketeswaran, Abhishek (FN) <Abhishek.Venketeswaran@netl.doe.gov> wrote:
Hi Lawrence, Thanks for getting back to me. I am currently working on simulation of ultrasonic guided waves on the surface of cylindrical pipes. I am currently using hexahedral elements with GLL quadrature within firedrake to perform this simulation. Next, I am looking to introduce notch and hole defects on the pipe wall and rerun the simulation. I am not sure on how to create such defects on the pipe wall with the current limitation of defining hexahedral elements using only extrusion of the 2D geometry. I thought, I could circumnavigate this problem by meshing the 3D geometry using tetrahedral elements and then leverage the benefits of spectral element method using the collapsed tetrahedral elements. Kindly let me know how I can solve this problem in Firedrake.
Ah, I see. I think that while you can do the 3D meshing with tets, the spectral element stuff is a lot of implementation away from working. If you want to give it a go we can try and provide advice. We're hopeful that unstructured hexahedral meshes will be supported by the end of the year, so that might be swifter! Lawrence
Dear Lawrence, I would love to try and implement the spectral tetrahedral elements sometime in the future when my plate is a little empty. The KMV element which has been used for the scalar wave equation in the link below, could I use it for 3D elastic wave propagation on Tet meshed 3D pipe geometry? https://www.firedrakeproject.org/demos/higher_order_mass_lumping.py.html#id3... Thanks -- Abhishek Venketeswaran NETL Research Associate - ORISE National Energy Technology Laboratory Department of Energy abhishek.venketeswaran@netl.doe.gov Work: 412-386-4833 Mobile: 716-507-7890 www.netl.doe.gov<http://www.netl.doe.gov> [cid:bda4fea8-ab26-4b88-bbe4-5777de7701a2] ________________________________ From: Lawrence Mitchell <wence@gmx.li> Sent: Friday, July 9, 2021 1:29 PM To: Venketeswaran, Abhishek (FN) <Abhishek.Venketeswaran@netl.doe.gov> Cc: firedrake <firedrake@imperial.ac.uk> Subject: Re: [EXTERNAL] [firedrake] Reg spectral (hp) tetrahedral element I realised I forget to leave the mailing list in CC, reintroducing it.
On 9 Jul 2021, at 18:21, Venketeswaran, Abhishek (FN) <Abhishek.Venketeswaran@netl.doe.gov> wrote:
Hi Lawrence, Thanks for getting back to me. I am currently working on simulation of ultrasonic guided waves on the surface of cylindrical pipes. I am currently using hexahedral elements with GLL quadrature within firedrake to perform this simulation. Next, I am looking to introduce notch and hole defects on the pipe wall and rerun the simulation. I am not sure on how to create such defects on the pipe wall with the current limitation of defining hexahedral elements using only extrusion of the 2D geometry. I thought, I could circumnavigate this problem by meshing the 3D geometry using tetrahedral elements and then leverage the benefits of spectral element method using the collapsed tetrahedral elements. Kindly let me know how I can solve this problem in Firedrake.
Ah, I see. I think that while you can do the 3D meshing with tets, the spectral element stuff is a lot of implementation away from working. If you want to give it a go we can try and provide advice. We're hopeful that unstructured hexahedral meshes will be supported by the end of the year, so that might be swifter! Lawrence
On 9 Jul 2021, at 18:40, Venketeswaran, Abhishek (FN) <Abhishek.Venketeswaran@netl.doe.gov> wrote:
Dear Lawrence, I would love to try and implement the spectral tetrahedral elements sometime in the future when my plate is a little empty. The KMV element which has been used for the scalar wave equation in the link below, could I use it for 3D elastic wave propagation on Tet meshed 3D pipe geometry?
https://www.firedrakeproject.org/demos/higher_order_mass_lumping.py.html#id3...
Yes, I think this should be possible. I think Keith implemented it for those reasons, actually. Lawrence
Thanks Lawrence -- Abhishek Venketeswaran NETL Research Associate - ORISE National Energy Technology Laboratory Department of Energy abhishek.venketeswaran@netl.doe.gov Work: 412-386-4833 Mobile: 716-507-7890 www.netl.doe.gov<http://www.netl.doe.gov> [cid:be5e71db-7370-4060-9057-9cc291b3919c] ________________________________ From: Lawrence Mitchell <wence@gmx.li> Sent: Friday, July 9, 2021 1:49 PM To: Venketeswaran, Abhishek (FN) <Abhishek.Venketeswaran@netl.doe.gov> Cc: firedrake <firedrake@imperial.ac.uk> Subject: Re: [EXTERNAL] [firedrake] Reg spectral (hp) tetrahedral element
On 9 Jul 2021, at 18:40, Venketeswaran, Abhishek (FN) <Abhishek.Venketeswaran@netl.doe.gov> wrote:
Dear Lawrence, I would love to try and implement the spectral tetrahedral elements sometime in the future when my plate is a little empty. The KMV element which has been used for the scalar wave equation in the link below, could I use it for 3D elastic wave propagation on Tet meshed 3D pipe geometry?
https://www.firedrakeproject.org/demos/higher_order_mass_lumping.py.html#id3...
Yes, I think this should be possible. I think Keith implemented it for those reasons, actually. Lawrence
participants (2)
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Lawrence Mitchell
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Venketeswaran, Abhishek (FN)