scholarly journals THE CONDITION OF TANGIER BAY

2011 ◽  
Vol 1 (5) ◽  
pp. 24
Author(s):  
Jean Laurent
Keyword(s):  
Scale Model ◽  
Field Observations ◽  
Local Authorities ◽  
Laboratoire Central ◽  
Sand Deposit ◽  
Near Future ◽  
The Town ◽  
Reduced Scale ◽  
Sand Deposition

During recent years, the spectacular growth of the sand deposit has made a great beach located at the base of the town of Tangier, and created a problem for local authorities. They are afraid that this deposition may endanger the harbor accessibility. Before beginning correcting or protecting works, the International Zone Administration of Tangier has asked the Laboratoire Central d'Hydraulique de France to study the conditions of Tangier Bay, and to determine the mechanism of sand deposition; and also to define on a reduced scale model the best arrangements to be taken in the near future for an extension of the harbor. This paper aims to present the results of field observations on the prototype.

Structural Analysis for a Reduced Scale Model of a Hydropower Plant Debris Containment Grid

2017 ◽  
Author(s):  
Felipe Santos de Castro ◽  
Eduardo Tadashi Katsuno ◽  
Andre Mitsuo Kogishi ◽  
José Marcos Paz de Souza ◽  
Joao Lucas Dozzi Dantas Dantas
Keyword(s):  
Structural Analysis ◽  
Hydropower Plant ◽  
Scale Model ◽  
Plant Debris ◽  
Reduced Scale

Simulation of a Free Standing Riser Model and Validation With Experimental Results

2014 ◽  
Author(s):  
Marcio Yamamoto ◽  
Sotaro Masanobu ◽  
Satoru Takano ◽  
Shigeo Kanada ◽  
Tomo Fujiwara ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Numerical Analysis ◽  
Previous Experiment ◽  
Numerical Results ◽  
Experimental Results ◽  
Previous Article ◽  
Scale Model ◽  
Analysis Software ◽  
Free Standing ◽  
Reduced Scale

In this article, we present the numerical analysis of a Free Standing Riser. The numerical simulation was carried out using a commercial riser analysis software suit. The numerical model’s dimensions were the same of a 1/70 reduced scale model deployed in a previous experiment. The numerical results were compared with experimental results presented in a previous article [1]. Discussion about the model and limitations of the numerical analysis is included.

Library Resources for the History of Science in Newcastle Upon Tyne

1982 ◽  
Vol 15 (3) ◽  
pp. 281-284
Author(s):  
W. A. Campbell
Keyword(s):  
History Of Science ◽  
Electrical Engineering ◽  
Local History ◽  
Cultural Institutions ◽  
Library Resources ◽  
History Of ◽  
Second Category ◽  
Near Future ◽  
The Town ◽  
Newcastle Upon Tyne

Science historians need two major kinds of literary resources, old books, journals, patents, plans and other documents from which to quarry their facts, and critical tools such as histories of science, bibliographies and biographies. Provision of the second category needs positive planning; the first is often itself an accident of local history. Among the factors which have shaped Newcastle upon Tyne may be numbered a Roman river crossing, a Norman castle, mediaeval walls, powerful charters granted by Tudor and Stuart monarchs, a favourable site in a coalfield, and a phenomenal succession of inventive entrepreneurs in mining, chemicals, shipbuilding, and mechanical and electrical engineering. Its scientific and cultural institutions (see Table) are of respectable maturity, and in addition the town possessed by 1815 several chapel and meeting-house libraries, a newsroom and subscription library in the Assembly Rooms together with three circulating libraries run by prominent booksellers. Present resources are concentrated in six organizations, with two more in the near future.

A Study of Aspiration Effects in Reduced-Scale Model Airbag Modules

1998 ◽  
Author(s):  
Y. G. Lee ◽  
C. S. Yu ◽  
P. W. Green ◽  
L.-D. Chen ◽  
P. B. Butler
Keyword(s):  
Scale Model ◽  
Reduced Scale

Reduced Model Device of Solutions to Control Thermal Buckling Effects in HP-HT Subsea Pipelines

2008 ◽  
Author(s):  
Helio C. Silva-Junior ◽  
Carlos O. Cardoso ◽  
Marco A. P. Carmignotto ◽  
Jose C. Zanutto
Keyword(s):  
Imaging Technique ◽  
Thermal Buckling ◽  
Scale Model ◽  
Reduced Model ◽  
Safe Operation ◽  
High Pressure And Temperature ◽  
Model Geometry ◽  
Subsea Pipelines ◽  
Model Device ◽  
Reduced Scale

Nowadays, the safe operation of HP-HT subsea pipelines resting on seabed must take into account the thermal buckling phenomenon. The transport of oil with high pressure and temperature can cause uncontrolled thermal buckling in subsea pipelines. The failure risk must be carefully evaluated to design the pipeline with safety. Nowadays to control the thermal buckling the use of man made triggers is seen like the best solution for cost and safety of subsea pipelines. Some projects employ man-made triggers to control the thermal buckling in the last years around the world. In this article is presented the system and methodology used to test some solutions in a reduced scale model. Different geometric setups along the model line were tested. Solutions like sleepers, dual sleepers and buoyancy were tested and the geometric and structural behavior monitored. The reduced model has 195 m length, and was developed in the IPT Towing Tank, representing a pipeline section of almost 6 km long. Strains, temperature, pressure and displacements were measured in several sections of the model. Additionally, an imaging technique for the model geometry retrieval was developed. This paper presents the experimental setup developed to investigate the performance of man-made triggers solutions for HP-HT subsea pipelines.

scholarly journals STUDY OF AN ARTIFICIAL ISLAND

1976 ◽  
Vol 1 (15) ◽  
pp. 202
Author(s):  
J.P. Lepetit ◽  
S. Moreau
Keyword(s):  
Mathematical Models ◽  
Industrial Effluents ◽  
Pollutant Dispersion ◽  
Wave Climate ◽  
Tidal Currents ◽  
Sea Bed ◽  
Local Wave ◽  
Industrial Zones ◽  
Near Future ◽  
Reduced Scale

The location of large surface industrial zones along sea shores often competes with other coastal activities, such as recreational pursuits, fishing, nature reserves, etc. The construction of an artificial island in the sea, near the shore, is a solution to which it will perhaps be necessary to have recourse in the fairly near future. The design of such a project poses many problems particularly in respect of its impact on the environment. We present here the results of a study which examines this aspect. The problems are as follows : - influence of the island on the local wave climate, or swell, and consequent shoreline changes, - influence of the island on tidal currents and resulting evolution of the sandy sea bed, - dispersion of industrial effluents. The effect of the island on swell and on shore stability and the calculation of pollutant dispersion are approached by the use of mathematical models ; the effect of the island on tidal currents is analysed on a reduced scale physical model.

scholarly journals PENGELOLAAN ARSIP DI KANTOR BADAN PENGENDALIAN DAMPAK LINGKUNGAN DAERAH KOTA PADANG

2018 ◽  
Vol 7 (1) ◽  
pp. 43
Author(s):  
DESI PUTRI
Keyword(s):  
Data Collection ◽  
Environmental Impact ◽  
Control Agency ◽  
Likert Scale ◽  
Research Data ◽  
Scale Model ◽  
Data Collection Tool ◽  
Validity And Reliability ◽  
Population Research ◽  
The Town

The fact in the field suggests that the archives conducted by the employees in a state that has not been ideal. This study aimed to obtain information of archives management in the environmental impact control agency office area of the town padang, in the procedure site there is archives, save, and Extermination management archives. This research is descriptive. Population in this research is the employee that there is in the environmental impact control agency office area of the town padang. who is totaled 19 people. Because of the less population of member the writer using the population research. Data collection tool was a questionnaire with Likert scale model that has been tested for validity and reliability. Overall average scores in the environmental impact control agency office area of the town padang is 3.50. It can be concluded that the archives managemen environmental impact control agency office area of the town padang is had been quite right.Keyword: Archives Management

An Experimental Study of the Interaction Between Pipe Structure and Internal Flow

2009 ◽  
Author(s):  
Marcio Yamamoto ◽  
Motohiko Murai ◽  
Katsuya Maeda ◽  
Shotaro Uto
Keyword(s):  
Gas Flow ◽  
Petroleum Industry ◽  
Internal Flow ◽  
Scale Model ◽  
Offshore Platforms ◽  
Drilling Mud ◽  
Well Drilling ◽  
Hydrocarbon Production ◽  
Flow Effects ◽  
Reduced Scale

Nowadays pipes are widely deployed in the offshore environment especially in the petroleum industry where rigid and flexible pipes are used for well drilling and hydrocarbon production. Whereas during drilling, a mixture of drilling mud, rock cuttings and sometimes gas flows through the drilling riser, during production mono or multiphase (comprising oil, water and gas) flow takes place within the system. However up till now, most of the studies on offshore pipelines and risers have been focused on the pipe structure and its interaction with hydrodynamic forces and offshore platforms. In particular for numerical computation studies and reduced scale model experiments, the pipe is usually modeled as a tensioned beam and sometimes only the internal pressure is taken into account with other effects due to its internal flow being neglected. This paper deals with the interaction between the pipe structure and its internal flow. In order to verify the internal flow effects, an experimental analysis was carried out not using a reduced scale model. In particular, mono-phase fluid flows into the pipe and a parametric analysis using the flow rate was carried out. Discussion about the experimental results and numerical applications is also included.

Sign in / Sign up

Export Citation Format

Share Document