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Keywords: reduction rate
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Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-514
... ridge structure along the direction of water flow;(Walsh 1983, Walsh and Lindemann 1984) simplified the rib structure to a V-shaped rib structure, and found that the drag reduction rate of the rib structure could reach 8 % through experiments; (Xu, Zhang et al. 2021) analyzed the influence of different...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-056
... the applicability test on the removable river gate and its reduction rate for the wave parameters. INTRODUCTION Tsunami hazards cause the wide inundation in the innermost area with law ground heights as well as port and coastal areas. Such the inundation hazards become remarkable in case that the tsunami runs...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-306
... adjacent pile calculation spudcan penetration speed reduction rate foundation bearing capacity modeling & simulation deformation extraction upstream oil & gas diameter lagrange entity Dynamic Simulation Studies of Spudcan Penetration on an Adjacent Pile Run Liu1, Wenguan Ma1, Haiyang...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-027
... of 30% and the bubble diameter of 1000 m for the drag reduction of a plate. The results show that the drag reduction rate is between 50% and 60%. Chengsheng Wu and Shulong He (2005) established a simplified physical model of two-phase flow around a high-speed bubble boat. Numerical calculations were...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-044
... integrity loading point upstream oil & gas composite pipe mechanical bimetal composite pipe failure mode reduction rate pipe formula empirical formula base tube pipe body wall thickness reduction rate liner tube ellipticity combination four-point The Significance of Stretch Bending...
Proceedings Papers

Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-523
... the high frequency piezoelectric ceramic energy transducers. Model tests are conducted with different incoming flow velocity, different micro-bubble diameters and different bubble volume fractions, results showed that resistance reduction rate increased with the increasing of the bubble volume fraction...
Proceedings Papers

Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-566
... injection velocity, step height, stern ramp and air injection location on drag reduction rate and air cavity shape are discussed. It is found that the key factors impacting drag reduction rate are not the air injection velocity but the air flow rate, bottom step height and air inlet location. Fluid velocity...
Proceedings Papers

Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-442
... distortion aluminum gma butt weldment analysis model temperature distribution roller fea reduction rate thickness application longitudinal welding shrinkage force weldment longitudinal shrinkage force A Study on Control of Buckling Distortion at the Aluminum GMA Butt Weldment by Trail Rolling...
Proceedings Papers

Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-451
... attack angle aerodynamic interaction broad reach condition performance prediction reach condition lift coefficient lift force experiment apparent wind angle wind-tunnel experiment close reach condition cascade numerical simulation coefficient wing sail reduction rate aerodynamic...
Proceedings Papers

Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-166
...) and body wave speed is proximal dimensionless parameters of live undulatory swimmers, and a maximum drag reduction rate of 38% is recorded. KEY WORDS: biomimetic robotic fish, self-propelled, efficient swimming, dimensionless parameter, drag reduction INTRODUCTION Through bionic engineering, the high...
Proceedings Papers

Paper presented at the The Eighteenth International Offshore and Polar Engineering Conference, July 6–11, 2008
Paper Number: ISOPE-I-08-446
... as the primary production. din concentration reduction rate measurement method concentration automatic measurement standard method seawater nitrate ammonia ion water management effectiveness reaction part standard solution indophenol method coastal field nitrite experiment cu-zn column...
Proceedings Papers

Paper presented at the The Seventeenth International Offshore and Polar Engineering Conference, July 1–6, 2007
Paper Number: ISOPE-I-07-200
... from no kinking to 3-forced kinking was 48% in the case of PDB. The linear reduction rates with the number of kinking were nonlinearly reduced with increasing confining stress. INTRODUCTION There have been so many researches about discharge capacity of Prefabricated Vertical Drain(PVD) with various...
Proceedings Papers

Paper presented at the The Thirteenth International Offshore and Polar Engineering Conference, May 25–30, 2003
Paper Number: ISOPE-I-03-174
.... experiment reduction rate sand layer ultimate bearing capacity model foundation suction foundation shallow foundation relative density model experiment zen bearing capacity depth ratio radius ratio upstream oil & gas failure mode solid foundation deeper foundation settlement upper plate...
Proceedings Papers

Paper presented at the The Ninth International Offshore and Polar Engineering Conference, May 30–June 4, 1999
Paper Number: ISOPE-I-99-330
... investigated. The experimental results demonstrate that the wave pressures acting on the wall become smaller in multi-directional sea conditions. A simple numerical model has been proposed to evaluate the reduction rate of wave pressures by wave directionality. INTRODUCTION Real sea waves have...

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