Cylinder simulation, simpleFoam terminal question
 

I downloaded a program that solves blockMesh – simpleFoam – Re = 100000 – K-Omega SST turbulent model with no wall functions. And to run the program I need to type in simpleFoam > log | tail -f log in the terminal. What does the " > log | tail -f log " part do and why do i need to enter it??

It says "If you do not have pyfoam enter: simpleFoam > log | tail -f log"

Re: Cylinder simulation,simpleFoam
 

Hey Marius,

"simpleFoam > log" will write the output of simpleFoam to a file called "log" so you can see it's progress (current time, Courant number, residual of solution iterations, etc...).

I'm not sure why you would want the "| tail -f log" part, because it seems like you don't need it since the output is already being written to the log file. The tail command outputs the last part of a file. Using the "-f" option to "follow" the file makes the data accumulate and each line is appended to the output. See the "man page" for the tail command, or, enter "man tail" in a terminal for more info.

Best regards,

Andrew