Results 11 to 20 of about 1,700,794 (328)
Nihon Kikai Gakkai ronbunshu, 2014 A mathematical model of rotor motion and an analysis model on mixed lubrication between the rotor and the spherical valve plate for a swash plate type piston pump have been presented in order to evaluate lubrication characteristics in the sliding part ...
Kazuhiko TANAKA, Yusuke FUJITA
doaj +1 more source
Stepwise mathematical derivation of the Herschel–Bulkley laminar fluid flow equations—in pipes
Journal of Petroleum Exploration and Production Technology, 2022 Stepwise derivation of flow equations of the Herschel–Bulkley (HB) model is not available in the literature. These equations are crucial for mechanical, chemical and petroleum engineering academia and industries where fundamental works on non-Newtonian ...
Rahman Ashena +5 more
doaj +1 more source
Assessment of zonal isolation risk to changes in design parameters [PDF]
, 2017 The Well Containment Screening Tool (WCST) focuses on well integrity evaluation after well control incident. The WCST favors a greater wall thickness and, hence, a narrower cementing annulus, potentially increasing the risk of cement loss.
Zhang, Huidong, active 21st century
core +1 more source
Optimization of gathering pipeline network topology in rolling development of old oilfields
You-qi chuyun, 2020 The layout optimization model for rolling development of gathering pipeline network was built against the problem of network topology changes caused by the increasing wellheads in old blocks and the new wells addition in new blocks in the late ...
Jianfei SUN, Jia LUO, Yongtu LIANG
doaj +1 more source
Nihon Kikai Gakkai ronbunshu, 2018 The power loss due to the friction and the leakage in the sliding part between piston and cylinder of a swash plate type piston pump and motor affects the equipment performance and the efficiency.
Kazuhiko TANAKA +3 more
doaj +1 more source
Numerical modelling of erosion and sedimentation around offshore pipelines [PDF]
, 1990 In this paper a numerical model is presented for the description of the erosion and sedimentation near pipelines on the sea bottom. The model is based on the Navier-Stokes equations and the equation of motion and continuity of sediment.\ud \ud The ...
Beek, F.A. van, Wind, H.G.
core +3 more sources
Nihon Kikai Gakkai ronbunshu, 2017 The friction characteristics on sliding part between piston and cylinder in a swash plate type piston pump in which improvement of the power density is demanded affect the equipment performance and the efficiency.
Kazuhiko TANAKA, Yusuke FUJITA
doaj +1 more source
Numerical study of changes in coal permeability in a mining workface [PDF]
Acta Montanistica Slovaca, 2015 At the front of a working coalface, the stress state can differ significantly across different zones. This seriously affects the permeability of the coal seam.
Xiang-chao Shi +6 more
doaj +1 more source
CFD Applications in Energy Engineering Research and Simulation: An Introduction to Published Reviews [PDF]
, 2019 Computational Fluid Dynamics (CFD) has been firmly established as a fundamental discipline to advancing research on energy engineering. The major progresses achieved during the last two decades both on software modelling capabilities and hardware ...
Iranzo Paricio, Jose Alfredo
core +1 more source
Migration Movements of Accidentally Spilled Oil in Environmental Waters: A Review
Water, 2023 Accidentally spilled oil can cause great harm to the ecological balance of water once it enters the environmental waters. Clarifying its movement behavior and migration law in water has been the focus of environmental hydraulics research.
Anqi Jiang +3 more
semanticscholar +1 more source