TITLE : SMOKE MOVEMENT IN A TUNNEL (Library Case: 606)

DETAILS

• Three-Dimensional steady flow (1 million cells)
• Cartesian computational grid
• Parabolic mode

NOTES

• The problem concerns the way in which a smoke plume rises as it is carried within a wind-tunnel having an imposed shear-flow velocity profile at inlet.
• This case shows how the parabolic option can be employed with advantage for fine-grid calculations on machines of modest size.
• The cross-stream grid is 40 * 40, and there are 625 z-direction intervals, so that one million cells feature in the calculation.

Pictures are as follows :

1.The computational grid, section across the tunnel

2. An animated sequence of smoke contours at various distances along tunnel

3. Velocity vectors at the tunnel exit