Nek5000

Nek users, I am trying to simulate Euler equations and need to remove or minimize viscosity. I ran

Hello Tanmoy, Thank you for the reply. I tried refinement by increasing polynomial order and it was

Hi LAYLA, The mesh could be visualised by .fXXXXX file generated by running your case with Nek5000.

Hello, I am a new user to Nek5000, and I wanted to know if there was any possible way to calculate

Thank you very much! This help me a lot! 在2023年4月11日星期二 UTC+8 17:17:27<YuHsiang Lan> 写道： Hi,

Dear Nek5000 Developers and Community, I am currently conducting an LES simulation of urban canopy

Hi Filipe, The results above from are from Quarteroni, Sacco, Saleri's book and state that

Thank you Dillon for the advice! It took a bit more work to get those faces identified correctly. I

Hello, I have a postdoctoral position opening in my group, with a focus on porous media flows and

Dear Nek5000 Community, I am currently setting up a simulation involving turbulent flow with passive

Yes, I have encountered a similar problem before; this issue is a little trickier than it seems (

Can you share your geo file ? Haomin (Kirk) Yuan From: nek...@googlegroups.com <nek5000@

Dear Team, Please ignore this email -- I have identified the issue. I can achieve CFL > 0.5 when

Hello everyone, I am encountering convergence issues during the pressure solver initialization in

Dear community, In my simulation case, a warning as shown in the figure below has appeared. It is

In Nek5000, the x axis is the axis of rotation. It is critical that vertex 1 and 2 of each element

Hi YuHsiang, So in usrdat or usrdat2, I would only need to set BCs for IDs 1, 2 and 3 correct? Em

Hi Yu-Hsiang, Thank you very much for your reply and the helpful input. I have noted your suggestions

Hi, you need to add an sink or source to your energy equation. So you are solving temperature variant

Dear Chunheng, The code below (also included as attachment) shows how to compute a surface integral

It works when adjusting the header of the .re2 file. However when doing the same for a 3D mesh, it

Dear YuHsiang Lan Thanks for your answer, it really helps. Student Ma On Monday, December 8, 2025 at

Dear Haomin (Kirk) Yuan Thanks for your answer, it really helps. Student Ma On Thursday, December 4,

Hello, I have been trying the k-tau RANS model on a 2D flat plate geometry with boundary conditions

Hi Yu-Hsiang, Thank you very much for your response. I checked the BCs, and the .rea file generated

Hi everyone, Just in case anyone stumbles upon this thread in the future wondering how to resolve

Hello everyone in the community, I ran a simulation for a while and finally obtained foo0.f00100. I

Thank you for reminding me. I actually tried adding "-mcmodel=large" into PPLIST (makenek)

Dear community, Within a numerical simulation framework based on the Immersed Boundary Method (IBM),

Thank you very much. On Sunday, October 26, 2025 at 11:24:06 PM UTC+8 YuHsiang Lan wrote: Hi, I'm

Hi YuHsiang, That's interesting. Thanks for suggesting. That's helpful. Best, Bibhas On

Dear Bastien Thanks for your answer, it really helps. Student Ma On Friday, November 14, 2025 at 5:32

Dear Nek community, I am a newcomer to Nek5000. I would like to ask for some guidance on how to set