Dedalus Users

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Welcome to dedalus-users, a list for general help, questions, and discussions about Dedalus.

Please take a look at the User Guide for answers to common questions and basic troubleshooting.

If you are new here, welcome! Please be patient while your first message is moderated to reduce spam.

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Zhengzhan Shang

Jul 4

error with problem.build_solver(timestepper) in IVP probelm

Hello all, I am running an IVP problem in a rotating ellipsoid setting with stress free boundary

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error with problem.build_solver(timestepper) in IVP probelm

Hello all, I am running an IVP problem in a rotating ellipsoid setting with stress free boundary

Jul 4

Nicholas Rui, Keaton Burns2

Jul 3

NCCs for EVPs on S2?

Hi Nicholas, Unfortunately this is not implemented yet and I don't know of any real workarounds.

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NCCs for EVPs on S2?

Hi Nicholas, Unfortunately this is not implemented yet and I don't know of any real workarounds.

Jul 3

Nathan Stolnicki, … Keaton Burns7

Jul 3

Factor is exactly singular error in 3D model adaptation

Hi all, It looks like the “tau_psi2” term needs to be “lift(tau_psi2)” in the “dt(F)” equation. This

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Factor is exactly singular error in 3D model adaptation

Hi all, It looks like the “tau_psi2” term needs to be “lift(tau_psi2)” in the “dt(F)” equation. This

Jul 3

Ritik Dubey, Daniel Lecoanet3

Jul 2

Animation?

Thanks, it's working ! On Tue, 2 Jul, 2024, 8:09 pm Daniel Lecoanet, <daniel.lecoanet@

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Animation?

Thanks, it's working ! On Tue, 2 Jul, 2024, 8:09 pm Daniel Lecoanet, <daniel.lecoanet@

Jul 2

Neil Lewis, … Daniel Lecoanet9

Jul 2

Dot product in coefficient space

Hi Neil, After you use ['c'] everything is in terms of numpy array. When you try to take a

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Dot product in coefficient space

Hi Neil, After you use ['c'] everything is in terms of numpy array. When you try to take a

Jul 2

Siddhant Ranka, Daniel Lecoanet4

Jul 2

Implementing MHD with Incompressible Flow

It works now - I forgot to add grad(p) to the momentum equation. Thank you, Siddhant On Monday, July

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Implementing MHD with Incompressible Flow

It works now - I forgot to add grad(p) to the momentum equation. Thank you, Siddhant On Monday, July

Jul 2

Yin Wang, … Luis10

Jun 27

inquiry about getting the eigenfunction of EVP in dedalus v2

Hi all, I implemeneted a annulus flow using AnnulusBasis, but I have a new problem on solving the

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inquiry about getting the eigenfunction of EVP in dedalus v2

Hi all, I implemeneted a annulus flow using AnnulusBasis, but I have a new problem on solving the

Jun 27

Nicholas Rui, Keaton Burns2

Jun 27

Failed EVP test case, installation issue

Hi Nicholas, This is from a recent release of scipy, which deprecated these methods. For now, you can

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Failed EVP test case, installation issue

Hi Nicholas, This is from a recent release of scipy, which deprecated these methods. For now, you can

Jun 27

Siddhant Ranka3

Jun 25

Implementing the MHD Continuity Equation

The specific error occurs in my current simulation after a few Alfvén times. After a few Alfvén times

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Implementing the MHD Continuity Equation

The specific error occurs in my current simulation after a few Alfvén times. After a few Alfvén times

Jun 25

Paul Michael Mannix

Jun 25

Open acces 2D Rayleigh Benard data

Hi All, I am working on a method that calculates continuous cdfs/pdfs from simulation data. I would

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Open acces 2D Rayleigh Benard data

Hi All, I am working on a method that calculates continuous cdfs/pdfs from simulation data. I would

Jun 25

Juntao Chu, eric.w....@gmail.com2

Jun 25

Inquiry on Setting Specific Boundary Conditions and Creating Sponge Layers in Dedalus

Hi Juntao, Some suggestions: 1. Remove the boundary condition at x = 0. This is something you should

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Inquiry on Setting Specific Boundary Conditions and Creating Sponge Layers in Dedalus

Hi Juntao, Some suggestions: 1. Remove the boundary condition at x = 0. This is something you should

Jun 25

Ritik Dubey

Jun 21

ValueError: Non-square system

Hey Dedalus users, I have attached the script, please try to resolve it. the error was, ValueError:

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ValueError: Non-square system

Hey Dedalus users, I have attached the script, please try to resolve it. the error was, ValueError:

Jun 21

Daniel Vaughan

Jun 20

Cross Product

Hi, I am trying to implement the cross product between 2 vectors and the tensor product of 2 matrices

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Cross Product

Hi, I am trying to implement the cross product between 2 vectors and the tensor product of 2 matrices

Jun 20

Ritik Dubey, Jeffrey S. Oishi3

Jun 20

Regarding the plotting of Rayleigh-Benard convection (2D IVP)

Thank you for the reply sir. But, when I am running both the scripts (rayleigh_benard.py and

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Regarding the plotting of Rayleigh-Benard convection (2D IVP)

Thank you for the reply sir. But, when I am running both the scripts (rayleigh_benard.py and

Jun 20

Ford Khoudary, Jeffrey S. Oishi3

Jun 19

Questions about tau method and difficulty creating square system

Hey Jeff, Thank you so much for the immense amount of help I really appreciate it! I tried to send

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Questions about tau method and difficulty creating square system

Hey Jeff, Thank you so much for the immense amount of help I really appreciate it! I tried to send

Jun 19

Zach Williams, … Keaton Burns9

Jun 19

Vlasov-Maxwell solver?

Hi all, Thanks for the additional input! As an update, we corrected a couple of mistakes on our end

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Vlasov-Maxwell solver?

Hi all, Thanks for the additional input! As an update, we corrected a couple of mistakes on our end

Jun 19

Ritik Dubey

Jun 19

Regarding the ValueError

Hey Dedalus users, I was trying to simulate a modified vorticity equation, but I am facing some

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Regarding the ValueError

Hey Dedalus users, I was trying to simulate a modified vorticity equation, but I am facing some

Jun 19

Suprabha Mukhopadhyay, Keaton Burns5

Jun 19

Free-surface boundary condition on spherical shell basis

Hi Keaton, Thank you very much for giving the insight into how to implement the free surface boundary

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Free-surface boundary condition on spherical shell basis

Hi Keaton, Thank you very much for giving the insight into how to implement the free surface boundary

Jun 19

Zhengzhan Shang, Keaton Burns2

Jun 18

Dstributed grid in BallBasis

Hi Shang, We're moving towards a system of accessing the grids from the distributor object,

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Dstributed grid in BallBasis

Hi Shang, We're moving towards a system of accessing the grids from the distributor object,

Jun 18

Luis, Keaton Burns2

Jun 18

MRI evp in cylindarical coordinate

Hi Hongke, This is still under development, but is going well and we expect it to release working

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MRI evp in cylindarical coordinate

Hi Hongke, This is still under development, but is going well and we expect it to release working

Jun 18

Duc Nguyen, Daniel Lecoanet3

Jun 18

ZTRSV/ZGEMV parameters had illegal values

Hi Daniel, Thanks for your suggestions. Following those points, I tried to isolate and eliminate all

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ZTRSV/ZGEMV parameters had illegal values

Hi Daniel, Thanks for your suggestions. Following those points, I tried to isolate and eliminate all

Jun 18

James Taylor, Keaton Burns2

Jun 17

A coupled PDE/ODE IVP system

Hi James, In Dedalus v2, the differential order of the system is inferred from the number of

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A coupled PDE/ODE IVP system

Hi James, In Dedalus v2, the differential order of the system is inferred from the number of

Jun 17

slab...@gmail.com, … Daniel Lecoanet14

Jun 16

Problem with recent builds

Hi Daniel, Just to confirm: I installed that commit on our cluster and I get the proper results, with

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Problem with recent builds

Hi Daniel, Just to confirm: I installed that commit on our cluster and I get the proper results, with

Jun 16

Zach Williams, Keaton Burns3

Jun 14

ComplexFourier vs. RealFourier

Thanks so much for the quick and informative reply, Keaton! That did the trick. For any future

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ComplexFourier vs. RealFourier

Thanks so much for the quick and informative reply, Keaton! That did the trick. For any future

Jun 14

Pinaki Pal, Keaton Burns3

Jun 13

Basic book to understand tau method

Hi Keaton, Many thanks for your reply. We'll explore the literature you suggested. Best regards,

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Basic book to understand tau method

Hi Keaton, Many thanks for your reply. We'll explore the literature you suggested. Best regards,

Jun 13

Ritik Dubey, Keaton Burns5

Jun 12

Help for defining the tau method and grid space initial condition.

Thanks you all On Wed, 12 Jun, 2024, 8:57 pm Keaton Burns, <keaton...@gmail.com> wrote: Hi

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Help for defining the tau method and grid space initial condition.

Thanks you all On Wed, 12 Jun, 2024, 8:57 pm Keaton Burns, <keaton...@gmail.com> wrote: Hi

Jun 12

Ju Dith, Keaton Burns3

Jun 12

Wave equation with Dirichlet bc blows up

Hi Keaton, Thanks a lot, this works! Judith Keaton Burns <keaton...@gmail.com> schrieb am Mi

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Wave equation with Dirichlet bc blows up

Hi Keaton, Thanks a lot, this works! Judith Keaton Burns <keaton...@gmail.com> schrieb am Mi

Jun 12

Ritik Dubey, Keaton Burns3

Jun 7

doubt regarding symbol @ used in dedalus

Thank you sir On Sat, 8 Jun, 2024, 12:19 am Keaton Burns, <keaton...@gmail.com> wrote: Hi

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doubt regarding symbol @ used in dedalus

Thank you sir On Sat, 8 Jun, 2024, 12:19 am Keaton Burns, <keaton...@gmail.com> wrote: Hi

Jun 7

Keaton Burns

Jun 7

Re: Saving problem parameters in snapshots

Hi Matt, I'd suggest making a field to wrap each parameter, and then outputting those directly.

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Re: Saving problem parameters in snapshots

Hi Matt, I'd suggest making a field to wrap each parameter, and then outputting those directly.

Jun 7

Brivaël Collin

Jun 6

Trouble using dedalus 2 in Windows Subsystem for linux

Hi all, for one of my project I need to use the Eigentools library which requires dedalus2. I have

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Trouble using dedalus 2 in Windows Subsystem for linux

Hi all, for one of my project I need to use the Eigentools library which requires dedalus2. I have

Jun 6