Application of the Cross-Correlation Method to Determine Solid and Liquid Velocities During Flow in a Vertical Pipeline

摘要

The use of hydraulic transport during the extraction of nodules from thernseabed will need constant monitoring of speed and concentration ofrnsolid grains in a vertical pipeline. In that case the most important is thernmeasurement in the begin part of the pipeline exposed to high pressurernand high flow nonstationarity. On the basis of this submission, thernauthors have built a prototype of a measuring device which tests onrnlaboratory piping are the subject of the article. The presented researchrnwe conducted during transport of the nodules’ ceramic models in arnvertical pipeline with an internal diameter of 150 mm, under conditionsrnof non-stationary flow, expected during operation offshore, and thernresults we compared with radiotracer measurements and recorded thernhead losses at the measuring section of the pipeline.