[bgokoglu]

I have been trying to install OpenFOAM to linux using terminal. However, I get an error after the second step.

berk@berk-VirtualBox:~$ sudo add-apt-repository http://dl.openfoam.org/ubuntu
[sudo] password for berk:
Sorry, try again.
[sudo] password for berk:
berk@berk-VirtualBox:~$ sudo apt-get update
Hit:1 http://security.ubuntu.com/ubuntu artful-security InRelease
Hit:2 http://cy.archive.ubuntu.com/ubuntu artful InRelease
Ign:3 http://dl.openfoam.org/ubuntu artful InRelease
Err:4 http://dl.openfoam.org/ubuntu artful Release
404 Not Found
Get:5 http://cy.archive.ubuntu.com/ubuntu artful-updates InRelease [65,4 kB]
Hit:6 http://cy.archive.ubuntu.com/ubuntu artful-backports InRelease
Reading package lists... Done
E: The repository 'http://dl.openfoam.org/ubuntu artful Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

[alexeym]

Hi,

Citing https://openfoam.org/version/5-0/:

Ubuntu Linux: packaged installation for Ubuntu 14.04, 16.04 and 17.04;

artful is 17.10. Compile OpenFOAM from sources, wait for packages for 17.10, downgrade to supported Ubuntu version.

[wyldckat]

Quick note: Deb packages for OpenFOAM 5 have been released on the 30th of October 2017: https://openfoam.org/news/v5-0-patch/

It's not identified as "OpenFOAM 5.1", but it sort-of is OpenFOAM 5.1.