In pipes with two-phase flow, when the flow direction of the medium is from bottom to top, it is advisable to first move horizontally and then vertically
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As the title suggests, what is the reason? Of course, if the medium flows from top to bottom, it is advisable to first move vertically and then horizontally
In two-phase flow, due to the difference in flow velocities between the gas and liquid phases as they move through the pipeline, columnar flow can occur. This situation leads to oscillations (similar to the water hammer effect in steam pipelines); therefore, pipeline layout must take this into account. Arranging the pipes horizontally first and then vertically is also for this reason. (In practical engineering, this may not always be possible; the main consideration remains the flow pattern of the medium.) This approach helps to reduce the velocity difference of the liquid phase in vertical pipes due to gravity, thereby preventing columnar flow in horizontal and vertical pipes, especially at elbows.