Clear display on serial monitor

On serial monitor, yes. Like @UKHeliBob said above, serial monitor doesn't understand these codes and there is no way to clear it except clicking the clear button. But these codes should work on a terminal emulator app (set to vt52 mode).

I have used similar (vt100) codes in Arduino sketches before. They never work in serial monitor, but when I use terminal window in Ubuntu and the screen command, it worked great.