Experimental study on the distribution of velocity and pressure near a submarine pipeline

Abstract

As a transport means of oil and gas the submarine pipeline has many merits, such as continuous delivery, large conveying capacity, convenient management, etc. A tube was chosen in our study to simulate the submarine pipeline in the experiments. A high accuracy instrument ADV and high precision point-type pressure sensors were used to measure the parameters of the flow field, including the pressure distribution, velocities at seven cross sections near the submarine pipeline with five different clearance ratios, and twelve dynamic pressure values around the pipeline. The pressure distributions and velocity changes around the pipe under different flow velocities and clearance ratios were analyzed. These results might be useful for further study of submarine pipeline erosion and protection.

Large Eddy Simulations of flow around a circular cylinder close to a flat seabed

“…Exposure to the gradient can also be obtained by decreasing G/D, causing a similar effect. The decrease of the p C peak with a reduced gap is documented by [12] and [23]. The thickening of the wall boundary layer causes an increase of the base pressure.…”

“…[9] measured the flow features for Re = 12000. Point measurements of pressure and velocity in the flow fields for comparable Re are presented at [10], [11] and [12].…”