Merger of pipe flows

The following examples concern flows through a set of pipes which merge transversely or cocurrently.

At the crossing regions, the colliding flows produce complex flow patterns, with highly varying structures in space and time. The complexity depends on the:

• inflow speed(s)
• viscosity
• angle and width of the pipes

A systematic variation of these different configurations is part of the following flow situations.

• Comparison of different inflow speeds for two perpendicular pipe flows (comprehensive version)
• Comparison of perpendicular pipe flow into a channel at different Reynolds numbers (comprehensive version)
• Comparison of parallel pipe flows into a channel at different Reynolds numbers (comprehensive version)

• Merger of two perpendicular pipe flows (same speed) at medium Reynolds number
• Merger of two perpendicular pipe flows (different speed I) at medium Reynolds number
• Merger of two perpendicular pipe flows (different speed II) at high Reynolds number

• Perpendicular pipe flow into a channel at low Reynolds number
• Perpendicular pipe flow into a channel at medium Reynolds number
• Perpendicular pipe flow into a channel at high Reynolds number

• Parallel pipe flows into a channel at low Reynolds number
• Parallel pipe flows into a channel at medium Reynolds number (I)
• Parallel pipe flows into a channel at medium Reynolds number (II)
• Parallel pipe flows with different inflow speeds into a channel at medium Reynolds number (I)
• Parallel pipe flows with different inflow speeds into a channel at medium Reynolds number (II)
• Parallel pipe flows into a channel with perpendicular injections