Variation of Current Drag on Flotel in Side-By-Side Configuration with FPSO

2020 ◽  
Author(s):  
Anurag Yenduri ◽  
Sandeep Reddy Bukka ◽  
Allan Ross Magee ◽  
Jing Liu ◽  
Anis Altaf Hussain
Keyword(s):  
Current Drag

Bidirectional Current Drag Induced by Two-Electron Cotunneling in Coupled Double Quantum Dots

2009 ◽  
Vol 2 ◽  
pp. 081101 ◽  
Author(s):  
Gou Shinkai ◽  
Toshiaki Hayashi ◽  
Takeshi Ota ◽  
Koji Muraki ◽  
Toshimasa Fujisawa
Keyword(s):  
Quantum Dots ◽  
Double Quantum ◽  
Double Quantum Dots ◽  
Current Drag

Current drag in a single quantum well

1996 ◽  
Vol 8 (20) ◽  
pp. 3705-3714 ◽  
Author(s):  
E Söderström ◽  
A V Buyanov ◽  
Bo E Sernelius
Keyword(s):  
Quantum Well ◽  
Single Quantum ◽  
Single Quantum Well ◽  
Current Drag

scholarly journals Observation of magnon-mediated current drag in Pt/yttrium iron garnet/Pt(Ta) trilayers

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Junxue Li ◽  
Yadong Xu ◽  
Mohammed Aldosary ◽  
Chi Tang ◽  
Zhisheng Lin ◽  
...  
Keyword(s):  
Yttrium Iron Garnet ◽  
Yttrium Iron ◽  
Iron Garnet ◽  
Current Drag

Current Drag From Tow and Wind Tunnel Tests of a FLNG Hull

2016 ◽  
Author(s):  
Zhenjia (Jerry) Huang ◽  
Jang Kim ◽  
Hyunchul Jang ◽  
Scott T. Slocum
Keyword(s):  
Boundary Layer ◽  
Wind Tunnel ◽  
Model Test ◽  
Cfd Simulation ◽  
Wind Tunnel Test ◽  
Model Tests ◽  
Additional Contribution ◽  
Wind Tunnel Model ◽  
Tunnel Model ◽  
Current Drag

In this paper, the current drag of a barge-shaped floating liquefied natural gas (FLNG) vessel was studied. Three model tests were performed — a wind tunnel model test, a submerged double-body tow test and a surface tow test. Computational fluid dynamics (CFD) simulations were carried out to gain further insights into the test results. During testing, the tow speed was kept low to avoid surface waves. When the current heading was around the beam current direction, the transverse drag coefficient measured from the wind tunnel test was significantly lower than those of the submerged tow and surface tow tests. The submerged tow and the surface tow provided similar drag coefficients. Results presented in this paper indicated that the difference between the wind tunnel test and the tow tests was caused by the wind tunnel boundary layer effect on the incoming wind profile and formation of a recirculation zone on the upstream side of the model, with a possible additional contribution from the wind tunnel floor constraint on the flow in the wake. Such effects are not accounted for with the simple corrections based on flow velocity reduction in the wind tunnel boundary layer. When conducting future wind tunnel model tests for barge-shaped FLNG hulls, one should consider the potential under-measurement of the transverse drag. In this paper, details of the FLNG model, test setup, test quality assurance (QA), measurement and CFD simulation results are presented, as well as discussions and recommendations for model testing.

scholarly journals Current Drag in Capacitively Coupled Luttinger Constrictions

1998 ◽  
Vol 81 (3) ◽  
pp. 653-656 ◽  
Author(s):  
Yuli V. Nazarov ◽  
D. V. Averin
Keyword(s):  
Capacitively Coupled ◽  
Current Drag

Observation of magnon-mediated electric current drag at room temperature

2016 ◽  
Vol 93 (6) ◽  
Author(s):  
H. Wu ◽  
C. H. Wan ◽  
X. Zhang ◽  
Z. H. Yuan ◽  
Q. T. Zhang ◽  
...  
Keyword(s):  
Electric Current ◽  
Room Temperature ◽  
Current Drag

Wave-Induced Current in a Seakeeping Basin

2017 ◽  
Author(s):  
Sanne van Essen ◽  
Wim Lafeber
Keyword(s):  
Large Scale ◽  
Wave Generation ◽  
Stokes Drift ◽  
Induced Current ◽  
Added Resistance ◽  
End Effects ◽  
Wave Basin ◽  
Current Drag ◽  
Wave Induced ◽  
Small Models

During tests in MARIN’s wave basins, it was observed that large-scale current patterns may develop under the influence of wave generation and absorption. The velocity of these currents is very low, so they generally do not influence the behaviour of models. However, for specific experiments at low speeds — wave added resistance tests with small models or current drag tests — a residual current may influence the results significantly. A good understanding of the residual circulation in a wave basin is essential to improve the quality of the tests performed. The wave-induced current patterns were observed during tests in MARIN’s Seakeeping and Manoeuvring Basin (SMB). The patterns may develop in several ways under the influence of waves in a basin. End effects of Stokes drift (mass transport due to second-order wave effects) can play a role, as the water has to return at the end of the basin. The SMB has the capability to generate oblique waves. It therefore has a wave-damping beach along two sides of the basin. Similar to ‘real’ beaches, they may cause alongshore currents and rip currents under the influence of oblique and perpendicular waves respectively. During the tests, floaters in the form of oranges were distributed in the basin after wave generation. They were tracked using a camera system. The images were processed such that the surface current patterns in the basin were visualized, and an estimate of the velocities was obtained. Additional local acoustic current meter measurements were used to check the order of magnitude of these velocities. Based on these tests, it was concluded that different patterns may occur in the basin, with the largest velocities after oblique wave generation. Typical surface velocities are in the order of 1 to 2 cm/s, non-uniformly distributed over the basin. Due to this non-uniformity and because decay is slow (memory effects), very sensitive added resistance and current drag tests may have to be corrected for a measured current velocity in the future.

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