Fully-developed turbulent channel flow at Re_tau=180

• Domain Size: (4pi*2*4/3pi)
• Grid points: 128*129*128 (x,y,z)
• dt: 0.03 (Total 25000 steps)
• Graph

 

Developing turbulent channel flow

• Domain Size: (4pi*2*4/3pi)
• Grid points: 128*129*128 (x,y,z)
• dt: 0.02 (Total 10000 steps)
• Graph

Active cancellation in turbulent channel flow at Ret=180

• Domain Size: (4pi*2*4/3pi)
• Grid points: 128*129*128 (x,y,z)
• dt: 0.02 (Total 10000 steps, dt⁺=0.23)
• Detection position: y⁺=15 (NY=21)
• Drag reduction: 25% (Re_¥ó=184.39 -> 159.70)
  
• Graph