Three-dimensional structured surface for walls of pipes transporting natural gas in turbulent flow has longitudinal structure in form of sine waves in direction of flow

摘要

The three-dimensional structured surface for walls in contact with a fluid in turbulent flow has a longitudinal structure in the form of sine waves in the direction of flow. Independent claims are included for: (A) a method for optimizing the aerodynamic characteristics of a fluid in turbulent flow over a wall using the structuring system; and (B) pipes whose walls are structured as described.