First, I would like to thank you, Mr Hwang, about the animation concerning the longitudinal and transverse waves. Even after almost 5 years this animation made me understanding easily the difference between these two types of waves.

I am interested in standing longitudinal wave and I would like to model numerically what happens (pressure temperature and velocity) inside a one-end closed tube.

If it is possible, could you please clarify me how can I proceed to reach my objective and which equations shall I use.

Thank you again for your kind help.

Best regards