Introductory OpenFOAM Course + Selected Topics (online)

Apr 23, 2024, 9:30 AM → Apr 24, 2024, 3:00 PM Europe/Berlin

Online

OpenFOAM(R) is an open-source package for simulation of fluid flow and heat transfer problems in engineering, nature, biological and astrophysical systems.

As a joint effort of bwHPC-S5 and NHR@KIT, the Scientific Computing Center (SCC) is hosting an introductory level course on the parallel use of OpenFOAM software for (current and future) users of the bwUniCluster (bwForClusters) or HoreKa supercomputers. The course will be held online April 23, 2024 from 9:30 to 15:00 and on April 24, 2024 from 9:30 to 14:00 (in English, online only). The course covers topics like using modules for setting up the environment, some linux commands, submitting parallel jobs or setting up harddisk space for the computations as well as several OpenFOAM tutorials. The course is organized by the Competence Center for Engineering (at SCC, KIT and HS Esslingen) and the SimDataLab Engineering in Energy and Mobility at the SCC, KIT.

Participants are expected to already have an user-account on one of the above two SCC supercomputers or one of the bwFORClusters. If you just obtained a new account - please, immediately after the first login complete the required survey, otherwise your account may be blocked after two weeks. Please, plan several days (3 or 4) for obtaining an account (you should set up a VPN and a 2-way authentication before the course). HoreKa users should take into account that in the week from 15.04 to 19.04 this Machine is not accessible due to maintenance.

The course will take place virtually and participants will get per Email the link 1-2 days before the course together with the course materials. No course fees apply. The number of participants is restricted to 45.

Please login exclusively with your official University-account ! ! ! Registrations with accounts from any private email providers (e.g. googlemail, yahoo etc.) are not welcome and will be removed without any further notification.

0_concept.pdf

1_modules.pdf

1st_Linux_Commands.pdf

2_workspaces.pdf

3_hot_room_tutorial_1.pdf

4_queues_and_job_submission.pdf

5_hot_radiation_tutorial_parallel.pdf

chipHX_4Students_CHT_2024.tar.gz

decomposeParDict

job_submit_dev_cpuonly_76_cores_horeka.sh

job_submit_dev_multiple_parallel_uc2.sh

job_submit_dev_single_1core_only_uc2.sh

LES_tutorial.pdf

linux_commands_during_the_course.pdf

Paraview_Tutorial.pdf

testCases_LES.zip

x_chipHX_CHT_tutorial.pdf

Tuesday, April 23

9:30 AM → 9:50 AM Welcome

Explaining the contents of the course

9:50 AM → 10:20 AM Some basic linux commands

Commands to copy files etc. using the command line (terminal)

10:20 AM → 10:55 AM Setup of environment variables using modules

Using different pre-installed versions of OpenFOAM

11:00 AM → 11:30 AM Workspace setup

How to reserve HDD-space for your computations. The usual duration for this space is 60 days and it could be prolongated

11:30 AM → 12:00 PM Tutorial 1 (The case is not parallel)

Here we demonstrate the desired way of work - on a serial example using the development queue.

12:00 PM → 1:00 PM Lunch break

1:00 PM → 1:40 PM Submitting a parallel job. Queues.

Decomposing the domain and reconstructing it for visualization.

1:40 PM → 2:30 PM Tutorial 2 (A parallel case)

2:35 PM → 3:00 PM Questions and feedback

Wednesday, April 24

9:30 AM → 10:15 AM Large Eddy Simulation (LES) in OpenFOAM, Part 1

Time-evolving inflow boundary conditions for unsteady RANS or Large Eddy Simulations (LES). Tutorial

10:15 AM → 10:50 AM Visualization with Paraview

10:50 AM → 11:05 AM Large Eddy Simulation (LES) in OpenFOAM, Part 2

Numerical dissipation and how to decrease it. Postprocessing

11:05 AM → 11:20 AM Break

11:20 AM → 12:50 PM A Conjugated Heat Transfer (CHT) Tutorial

A worked example of a complex physics

12:50 PM → 1:50 PM Lunch break

1:50 PM → 2:00 PM Feedback (questionnary) and Goodbye