Desert Mountain Energy Corp. (DME) has completed the acquisition of the Kight Gilcrease Sant Unit (KGSU) oil and gas project which it hopes will lead to an expansion of its helium exploration activities.
ABS and the Shanghai Merchant Ship Design & Research Institute (SDARI) have announced a two-year joint research and development project into a energy saving device to enhance the propeller efficiency on a bulk carrier. The add-on device that ABS and SDARI are looking into has the potential to reduce both the greenhouse gas emissions and lower fuel consumption, say ABS. "We will use computational fluid dynamics (CFD) technology to analyse the flow field and specifically look to see if the device developed by SDARI does indeed create more efficiency by equalising the wake quality and recovering certain rotation energy", explains Sing Kwan Lee, ABS principle engineer.
来源期刊：Journal of the Taiwan Institute of Chemical Engineers
This paper is the first to evaluate numerically the hydrodynamic forces that apply in two case studies that involve a Newtonian fluid and three in-line spheres (case 1) and a sphere that moves in a circular cell (case 2). The hydrodynamic interactions between the spheres in case 1 or between the central sphere and the surrounding spherical wall in case 2 can be ignored at beta (=d(f)/2 root k, where d(f) and k are the diameter and permeability of the sphere, respectively) <0.5 (no-sphere limit), and the effects of interior flow in the sphere can be ignored at beta>50 (solid sphere limit). At 0.52, in neither case 1 nor case 2 can a steadily moving system form; in the former case, sweep coagulation-like behavior occurs, and in the latter, zone settling-like behavior occurs. (C) 2019 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.