Dangers of gases in pipelines
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One of the hazards associated with gases in pipes states that: \"Bubbles in the pipes increase the volume of water flowing, raise the relative flow velocity between the water and the pipe walls, increase friction along the pipeline, reduce the head pressure generated by the pump, and lower the flow rate.\" I’ve never understood why bubbles can increase the volume of water flowing or raise the relative flow velocity between the water and the pipe walls
There are bubbles in the water; the density decreases, so the volume increases. Does this result in an extremely high flow rate in the same pipe due to the increased volume?
Vibrations are likely to occur in the gas-liquid two-phase flow; the pipe diameter must be appropriate to avoid plug flow.
I don’t know why I can’t figure it out. For water with a high turbulent flow rate of 100 cubic meters per unit time, if air is introduced at a flow rate of 10 cubic meters per unit time, the resistance is equal to that at a resistance value of 110, which is 121% of the original value.