... of this model. On the basis, the influence of water-air-bubble flow for the condition of 10% air volume fraction on velocity and pressure fields around the hydrofoil is presented. Coefficients of lift and drag of the hydrofoil are discussed comparing with single-phase water flow condition. This research can...

... ratio flow velocity engineering offshore pipeline oscillatory flow subsea pipeline sand dune numerical study kc 4 midstream oil & gas scour depth local scour flow condition oscillatory flow condition numerical model steady current kc 10 oscillate Proceedings of the Thirty-second...

... prediction for the hydrodynamic properties. centerline deviation pipe volume fraction upstream oil & gas pipe diameter velocity magnitude diameter technol hydraulic gradient solid phase horizontal pipe mixture velocity relative error flow condition equation entry length slurry...

... and even lead to environmental disasters. In this study, the cushion effect of liquid film on the particle erosion in elbows is investigated by using a numerical procedure. The procedure performs well in estimating the erosion of elbows under annular flow conditions. The effects of macroscopic factors...

...); and it is difficult to move into another place after its first installation. usg 0 machine learning multiphase flow accelerometer 1 accelerometer classification pipeline-riser system vibration binary classification upstream oil & gas irregular transition blowout transition flow condition...

... to efficiently design of riser systems have been continued. configuration vms maximum value dynamic simulation internal flow condition effective tension specification slug flow condition riser flow condition catenary equation dynamic analysis upstream oil & gas slug flow load case...

.... This paper presents the qualification of the Type B split sleeve, a sealing repair methodology, for strain-based pipelines. The subjects addressed include selecting the Type B split sleeve as a repair candidate, finite element modeling of the repair, sleeve welding with in-service flow conditions, and full...

... Abstract More realistic assumptions with respect to the real flow condition in offshore production need to be made in order to predict liquid loading, and two aspects have been improved, focusing on the droplet's generation and breakup. A modified model and liquid loading criteria are deduced...

...., 2007; Myers et al., 2010). This can be very useful for collecting repeatable measurements to assist in the understanding of how these devices can perform and how they are affected by minor variations in flow conditions. However, such experiments are often conducted using simplified or hypothetical flow...

... respectively, in keeping the rotational torque counter-balanced. This paper discusses numerically the flow conditions around the wind rotors. That is, the commercial CFD code can predict well the flow conditions and the outputs of the tandem wind rotors. INTRODUCTION Wind is clean, renewable and homegrown...

... Characteristics of Seepage Failure of Soil under Various Flow Conditions Tsutomu Tanaka*, Tomoya Kusaka Shigeru Nagai and Daisuke Hirose* * Graduate School of Agricultural Science, Kobe University, Nada Kobe, Japan ** Nanyo Regional Office, Ehime Prefecture, Misho Hirajo, Ainan Minami Uwa, Ehime...

..., is the level of the sediment- passing-window, is the size of the sediment-passing-window, and fL 'fh wz wL is the attacking angle of the SFC. For the flow conditions and the SFC dimensions listed in Table 2, the 2-D flow velocity field around the SFC shown in Fig.5 was measured by a simple PIV technique (Chen...

... direction blade number power station turbine ocean energy counter-rotating type hydroelectric unit efficiency hydraulic efficiency generator rotational speed flow condition renewable energy reversible counter-rotating type hydroelectric unit type hydroelectric unit front runner maximum...

.... Besides, the effects of the front blade profile and the wind rotor arrangements on the turbine performances were discussed experimentally in accompany with the flow conditions. INTRODUCTION Growing energy demand and environmental global warming have re-evoked human interest in Renewable Energy. Wind...

... Numerical Analyses of a Spiral Groove Dry Gas Seal Under Slip Flow Conditions Xiao-ni Yin Offshore Oil Engineering Co. Ltd. Engineering Company Tianjin, China Xu-dong Peng School of Mechatronic Engineering, University of Petroleum of China, Hangzhou, Zhejiang, China ABSTRACT A finite element...

... mechanisms. In order to get the best performance, the authors started preliminarily optimizing the rotor profiles. This paper discussed experimentally the desirable arrangement between two-stage wind rotors and numerically the flow conditions around the wind rotors. The flow interaction between the front...

... and 0.7. Then, the turbine characteristics under sinusoidal flow conditions were obtained by using quasi-steady analysis. As a result, the effect of tip clearance on the turbine performance was clarified and it was found that the turbine characteristics for the case of ν = 0.7 is more sensitive to the tip...

... and sinusoidal flow conditions. Then, the experimental results have been compared with those of a radial turbine with fixed guide vanes. As a result, the running characteristics of the proposed radial turbine under steady and sinusoidal flow conditions have been clarified. Furthermore, it seems that the proposed...

... number) has not been clarified yet. turbine characteristic rotor blade profile flow condition steady flow condition raghunathan coefficient renewable energy sustainable development international society ocean energy sinusoidal flow condition solidity social responsibility inoue well...

... valves is complicated and difficult to maintain. turbine characteristic blade profile hysteresis characteristic sustainability ocean energy coefficient renewable energy rotor geometry conversion well turbine raghunathan sustainable development flow condition sweep ratio efficiency...