scholarly journals Comparison of predicted and observed responses of pipeline to differential frost heave

1994 ◽  
Vol 31 (6) ◽  
pp. 803-816 ◽  
Author(s):  
B. Rajani ◽  
N. Morgenstern
Keyword(s):  
Large Diameter ◽  
Time Dependent ◽  
Frost Heave ◽  
Scale Model ◽  
Small Scale ◽  
Frozen Soils ◽  
Winkler Model ◽  
Polycrystalline Ice ◽  
Differential Frost Heave ◽  
Small Scale Model

This paper describes the application of a simplified Winkler model to simulate the observed time-dependent responses of a pipeline at Caen, France, subjected to differential frost heave. The numerical Winkler model developed for a semi-infinite beam embedded in a creeping medium was used to evaluate the response of the Caen pipeline. Despite its simplicity, the Winkler model is able to predict the overall response of deflections and stresses which compares satisfactorily with observed data. In a previous study, the same Winkler analysis was applied to small-scale model steel pipelines embedded in polycrystalline ice, and satisfactory comparisons between the predicted and observed responses were obtained. Consequently, the analyses presented in this paper serve to reconfirm that the Winkler model can also be applied to analyze large-diameter pipelines subjected to differential frost heave. Key words : chilled pipelines, creeping foundation, frozen soils, frost heave.

Wave Energy Hyperbaric Device for Electricity Production

2007 ◽  
Author(s):  
Segen F. Estefen ◽  
Paulo Roberto da Costa ◽  
Eliab Ricarte ◽  
Marcelo M. Pinheiro
Keyword(s):  
Power Generation ◽  
Wave Energy ◽  
Experimental Results ◽  
Electricity Production ◽  
Scale Model ◽  
Small Scale ◽  
Regular Waves ◽  
Hyperbaric Chamber ◽  
Small Scale Model

Wave energy is a renewable and non-polluting source and its use is being studied in different countries. The paper presents an overview on the harnessing of energy from waves and the activities associated with setting up a plant for extracting energy from waves in Port of Pecem, on the coast of Ceara State, Brazil. The technology employed is based on storing water under pressure in a hyperbaric chamber, from which a controlled jet of water drives a standard turbine. The wave resource at the proposed location is presented in terms of statistics data obtained from previous monitoring. The device components are described and small scale model tested under regular waves representatives of the installation region. Based on the experimental results values of prescribed pressures are identified in order to optimize the power generation.

Staged-Air Ratio Optimization for a New Down-Fired Technology within a Cold Small-Scale Model of a 350 MWeUtility Boiler

2011 ◽  
Vol 25 (4) ◽  
pp. 1485-1496 ◽  
Author(s):  
Min Kuang ◽  
Zhengqi Li ◽  
Pengfei Yang ◽  
Jinzhao Jia ◽  
Qunyi Zhu
Keyword(s):  
Scale Model ◽  
Small Scale ◽  
Ratio Optimization ◽  
Small Scale Model

scholarly journals Monitoring deformation of small scale model tunnels under load testing

Survey Review ◽  
2014 ◽  
Vol 46 (339) ◽  
pp. 417-425 ◽  
Author(s):  
H-M. Chen ◽  
M. Smith ◽  
H-S. Yu ◽  
N. Kokkas
Keyword(s):  
Scale Model ◽  
Small Scale ◽  
Load Testing ◽  
Small Scale Model

A small-scale model of factor VIII and factor IX fractionation from plasma

1989 ◽  
Vol 10 (4) ◽  
pp. 279-286 ◽  
Author(s):  
Peter Feldman ◽  
Lowell Winkelman ◽  
Helen Evans ◽  
Martin Pinnell ◽  
Fiona Murdoch ◽  
...  
Keyword(s):  
Factor Viii ◽  
Factor Ix ◽  
Scale Model ◽  
Small Scale ◽  
Small Scale Model

A Small Scale Model for Seismic Imaging Systems

1972 ◽  
pp. 195-213 ◽  
Author(s):  
M. G. Maginness ◽  
G. B. Cook ◽  
L. G. Higgens
Keyword(s):  
Seismic Imaging ◽  
Imaging Systems ◽  
Scale Model ◽  
Small Scale ◽  
Small Scale Model

Small‐Scale Model Tests of Structural Steel Assemblies

1989 ◽  
Vol 115 (8) ◽  
pp. 1999-2015 ◽  
Author(s):  
Benjamin J. Wallace ◽  
Helmut Krawinkler
Keyword(s):  
Structural Steel ◽  
Model Tests ◽  
Scale Model ◽  
Small Scale ◽  
Small Scale Model
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