Exploring Drag-Reducing Grooved Internal Coatinq For Gas Pipelines

摘要

In the process of natural gas transmission, almost all power of the compressor stations is used to overcome the friction consumption between the flowing gas and pipeline wall. Therefore, large amounts of resources are spent on compressor station maintenance every year. To increase transmission capacity and to save energy, internal coating technology has been widely applied in gas pipelines and a remarkable economic benefit has been achieved so far. However, with the roughness reduced on the inner wall, the small convex parts are all completely submerged in the viscous sublayer and the gas pipeline becomes "hydraulic smooth pipe." That means even though the coating surface is smoothed further, the wall friction is difficult to further reduce. Therefore, in order to further increase the transportation capacity on the basis of internal coating, new methods and technologies should be researched and investigated. Perhaps the biomimetic drag-reducing technology is a good attempt.