STRAIT OF SUNDA AND PASSAGE FROM ANJER TO BATAVIA, with Remarks upon the beacons, perches, &c., placed on the Shoals in the Outer Channel leading to Batavia Roads.—March 1841

2013 ◽  
pp. 361-432
Author(s):  
Various Authors
Keyword(s):  
Outer Channel

Manœuvring Large Tankers in the Approach Channels to Europoort

1971 ◽  
Vol 24 (3) ◽  
pp. 300-312 ◽  
Author(s):  
L. A. Koelé ◽  
C. Don
Keyword(s):  
North Sea ◽  
Meteorological Conditions ◽  
English Channel ◽  
Outer Channel ◽  
The North ◽  
Approach Channel ◽  
The North Sea ◽  
Inner Channel ◽  
Approach Route

In discussing certain aspects of the manœuvring of large tankers it is necessary to consider the navigational circumstances, and especially the hydrographic and meteorological conditions that obtain in the Europoort-area which can be divided into three zones (Fig. 1):(i) the approach route through the English Channel and the southern part of the North Sea to the outer approach channel;(ii) the approach channels—the outer channel (bearing 82° 30′) and inner channel (bearing 112°)—to the harbour mouth near the Hook of Holland;(iii) from the harbour moles through the temporary mouth to the Europoort basin, ending in the berthing manœuvres alongside the jetty.

scholarly journals PIV-Measurements of Centrifugal Instabilities in a Rectangular Curved Duct with a Small Aspect Ratio

Fluids ◽  
2021 ◽  
Vol 6 (5) ◽  
pp. 184
Author(s):  
Afshin Goharzadeh ◽  
Peter Rodgers
Keyword(s):  
Reynolds Number ◽  
Aspect Ratio ◽  
Velocity Distribution ◽  
Channel Wall ◽  
Secondary Flows ◽  
Working Fluid ◽  
Measured Velocity ◽  
Outer Channel ◽  
Dean Vortices ◽  
Curved Duct

In this study, experimental measurements were undertaken using non-intrusive particle image velocimetry (PIV) to investigate fluid flow within a 180° rectangular, curved duct geometry of a height-to-width aspect ratio of 0.167 and a curvature of 0.54. The duct was constructed from Plexiglas to permit optical access to flow pattern observations and flow velocity field measurements. Silicone oil was used as working fluid because it has a similar refractive index to Plexiglas. The measured velocity fields within the Reynolds number ranged from 116 to 203 and were presented at the curved channel section inlet and outlet, as well as at the mid-channel height over the complete duct length. It was observed from spanwise measurements that the transition to unsteady secondary flows generated the creation of wavy structures linked with the formation of Dean vortices close to the outer channel wall. This flow structure became unsteady with increasing Reynolds number. Simultaneously, the presence of Dean vortices in the spanwise direction influenced the velocity distribution in the streamwise direction. Two distinct regions defined by a higher velocity distribution were observed. Fluid particles were accelerated near the inner wall of the channel bend and subsequently downstream near the outer channel wall.

Application Comparison about Sediment Deposition in Outer Channel by Three-Layer Mode and Analog Analysis Mode

2011 ◽  
Vol 130-134 ◽  
pp. 1638-1644
Author(s):  
Xiao Xiang Feng ◽  
Zhe Liu ◽  
Xing Kui Wang
Keyword(s):  
Strong Wind ◽  
Calculation Methods ◽  
Outer Channel ◽  
Basic Law ◽  
Layer Deposition ◽  
Layer Mode ◽  
Sandy Coast ◽  
Comparative Results ◽  
Analysis Mode ◽  
Deposition Mode

Sudden sedimentation is an important subject for building ports in silt-sandy coast. It elaborates calculation methods detailed about three-layer deposition mode and analogy analysis mode. And they are used to predict the deposition in outer channel of Binzhou Port. Comparative results show that they are basically same on the distribution of sudden sedimentation, deposition thickness and volume along the channel. And it is larger from three-layer deposition mode than analogy analysis mode. The formal mode is propitious to project security. By analyzing the characteristics and applicability about two methods, basic law is obtained for sediment movement and predicting methods under strong wind in the outer channel of silt-sandy coast.

Numerical Simulation on Sudden Siltation Induced by Winner Storm and Large Waves in Outer Channel of Huanghua Port, China

2012 ◽  
Vol 204-208 ◽  
pp. 2357-2364
Author(s):  
Wei Sheng Zhang ◽  
Jin Shan Zhang ◽  
Chen Chen ◽  
Hong Jun Zhao
Keyword(s):  
Storm Surge ◽  
Bohai Bay ◽  
Winter Storm ◽  
Outer Channel ◽  
Second Stage ◽  
The Third ◽  
Deposition Area ◽  
Third Stage ◽  
Alongshore Current ◽  
Sediment Model

A multinest storm surge-wave-sediment model is applied to simulate strong storm surge caused by winter storm in Bohai Bay in Oct, 2003. The fields of current and sediment of for- and post- regulating structure are calculated to analysis the effect of regulation. The results show that the alongshore current caused by storm surge strengthen the cross-channel component and that provided the impetus conditions for sediment transport. The siltation in the outer channel of Huanghua port in the second stage is very severe. For example, the thickness of slitting sediment in the area, 3~19 kilometers (away from the entrance of port) is over 2.0 meters. While the third stage dike for debris barrier is completed, the hyper-concentrated silt-laden flow offshore could be eluded, and the maximum deposition area goes out thus the sediment siltation is reduced.

Influence of Monsoon on Macrobenthic Assemblage in Outer Channel Area of Chilika Lagoon, East Coast of India

2010 ◽  
Vol 3 ◽  
pp. 57-68 ◽  
Author(s):  
Debasish Mahapatro ◽  
R.C. Panigrahy ◽  
Sudarsan Panda ◽  
Rajani K. Mishra
Keyword(s):  
Population Density ◽  
East Coast ◽  
Monsoon Season ◽  
Diversity Indices ◽  
Chilika Lagoon ◽  
East Coast Of India ◽  
Mean Values ◽  
Outer Channel ◽  
Density And Biomass ◽  
Richness Index

Abundance of macrobenthos in the outer channel area of Chilika lagoon in the east coast of India was studied during Monsoon season of 2007 & 2008. In total 27 species of macrobenthic organisms were collected during the study period season. Crustacea was emerged as the most dominate group representing 9 species followed by polychaetes with 8 species while 5 species belonged to bivalvia and 3 species to gastropoda. The others group in the study area included nematodes and echiurids. The mean density of macrobenthos was 378 organism m-2 and 392 organism m-2 in 2007 & 2008.The biomass was measured as and biomass 0.525 g m-2 and 0.575 g m-2 during 2008 &2007. Mean values of diversity indices like Margalef's richness index was 2.7 in 2007 and 3.0 in 2008. While Shannon's H' was 1.7 of 2008 and 1.8 in 2007. The Evenness J was calculated as 0.76 in 2008 and 0.94 in 2007. The result of the study shows that hydrographical parameters like Temperature (°C), pH and Salinity (psu) parameters had modest relationship with population density and biomass. The preference of macrobenthic organism to any specific parameter couldn't be established clearly and this would be due to the presence of more opportunistic filters feeders than the deposit feeders. The opening of a new outlet connecting with the sea had good influence on species richness and population density. Key words: Chilika lagoon; Macrobenthos; Population density; biomass; diversity indices DOI: 10.3126/jowe.v3i0.2223 Journal of Wetlands Ecology, (2009) Vol. 3, pp 56-67

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