Hi @czhang!
You have visualized the velocity (U) whereas we have visualized the pressure (p) in the tutorial. Follow the step-by-step instructions and you should be fine. 
Best,
Jousef
Hi @czhang!
You have visualized the velocity (U) whereas we have visualized the pressure (p) in the tutorial. Follow the step-by-step instructions and you should be fine. 
Best,
Jousef