Abstract:
The hydraulic capsule pipeline (HCP) is regarded as the third-generation pipeline, first and second generation being fluid andslurry pipelines, respectively. For increasing the performance of these pipelines, capsule numbers in the pipeline must be increased, therebyincreasing solid throughput. In the present study, computational fluid dynamics (CFD) modeling of a three-dimensional (3D) concentriccapsule train was carried out. The focus of this work was to study the effects of intercapsule spacing (S), diameter ratio (k), and aspectratio (a) on the performance of the pipeline in amount of energy consumption. Results show that fork¼0.8,a¼1.25, andS¼0.75timesof capsule length, the capsule train requires minimum power to move ahead. A detailed optimal cost analysis was also carried out, whichrevealed that total cost of the pipeline is first reduced then increased with the enlargement in pipeline diameter. Hence, optimizingthe diameter of a hydraulic pipeline transporting capsule was the subject of this study