A Study on Sloshing Behavior for Moss-type LNG Tank Based on SPH Numerical Simulation and Large-scale Model Experiment

2018 ◽  
Vol 28 (4) ◽  
pp. 350-360
Author(s):  
Chong Ma ◽  
Masayoshi Oka ◽  
Takahiro Ando ◽  
Naoya Matsubara
Keyword(s):  
Numerical Simulation ◽  
Model Experiment ◽  
Large Scale ◽  
Scale Model ◽  
Large Scale Model ◽  
Lng Tank

scholarly journals Deflection characteristics of Unbound Base Course During a Large Scale Model Experiment

2015 ◽  
Vol 2 (1) ◽  
pp. 1
Author(s):  
Makhaly Ba ◽  
Meissa Fall ◽  
Oustasse Abdoulaye Sall
Keyword(s):  
Cyclic Loading ◽  
Model Experiment ◽  
Large Scale ◽  
Scale Effects ◽  
Base Layer ◽  
Scale Model ◽  
Pavement Materials ◽  
Elastic Deflection ◽  
Large Scale Model ◽  
Base Course

This paper evaluates de deflections (measured at the surface and/or at the top of the subgrade) of unbound pavement materials under cyclic loading. Deflections of three base course materials (Bakel Red Quartzite, Bakel Black Quartzite and Diack Basalt) were investigated using a large-scale model experiment (LSME). The LSME is a prototype-scale pavement test apparatus where cyclic loading is applied and deflections are measured. The LSME replicates field conditions and accounts for scale effects. The LSME results showed that the total, plastic and net plastic deflections of a pavement increase progressively as the number of loading cycles increases. The total deflection decreases as the thickness of the base layer increases. Plastics deflections at the top of the subgrade decrease progressively as the thickness of the base layer is increased. The elastic deflections of the surface and of the base layer decrease gradually with the increasing loading cycles. The elastic deflection at the top of the subgrade decreases with increasing thickness of the base layer. So, rutting can be limited by limiting the elastic deflection at the top of the subgrade. However, this criterion does not account for the rutting caused by the unbound base layers and that of the asphalt concrete.

Structural Contribution of Geosynthetic-Reinforced Working Platforms in Flexible Pavement

2005 ◽  
Vol 1936 (1) ◽  
pp. 43-50 ◽  
Author(s):  
Woon-Hyung Kim ◽  
Tuncer B. Edil ◽  
Craig H. Benson ◽  
Burak F. Tanyu
Keyword(s):  
Model Experiment ◽  
Large Scale ◽  
Elastic Moduli ◽  
Granular Layer ◽  
Resilient Modulus ◽  
Scale Model ◽  
Design Guideline ◽  
Large Scale Model ◽  
Structural Contribution ◽  
Soft Subgrade

A study was conducted in the field and with a large-scale model experiment (LSME) to evaluate the structural contribution of a 0.30-m-thick geosynthetic-reinforced granular layer used as a working platform for construction over soft subgrade. The study was conducted in the context of the 1993 AASHTO design guideline, in which the structural number (SN) of the pavement is based on layer coefficients (each defined using a resilient modulus). Working platforms reinforced with geosynthetics had smaller elastic deflections and larger elastic moduli than unreinforced working platforms with the same thickness. Reinforcement factors obtained in the field ranged from 1.2 to 1.8; those obtained in the laboratory ranged from 1.7 to 2.0, with greater reinforcement factors for the less extensible geosynthetics (geogrid, woven geotextile) for a 0.3-m-thick granular working platform. Of the four geosynthetics tested, the geogrid resulted in the greatest increase in modulus. Reinforcing the working platforms with geosynthetics resulted in increases in layer coefficients ranging from 50% to 70%. Similarly, increases in SN for a typical pavement structure were realized, ranging from 3% to 11% when all other factors were equal.

RANCANG BANGUN PERANGKAT EKSPERIMENTASI PROSES PIROLISIS BIOMASA GELOMBANG MIKRO

2013 ◽  
Vol 14 (2) ◽  
Author(s):  
Noor Fachrizal
Keyword(s):  
Large Scale ◽  
Continuous Model ◽  
Biomass Energy ◽  
Scale Model ◽  
Small Scale ◽  
Laboratory Apparatus ◽  
Liquid Form ◽  
Large Scale Model ◽  
Bio Oil ◽  
Pyrolysis Of Biomass

Biomass such as agriculture waste and urban waste are enormous potency as energy resources instead of enviromental problem. organic waste can be converted into energy in the form of liquid fuel, solid, and syngas by using of pyrolysis technique. Pyrolysis process can yield higher liquid form when the process can be drifted into fast and flash response. It can be solved by using microwave heating method. This research is started from developing an experimentation laboratory apparatus of microwave-assisted pyrolysis of biomass energy conversion system, and conducting preliminary experiments for gaining the proof that this method can be established for driving the process properly and safely. Modifying commercial oven into laboratory apparatus has been done, it works safely, and initial experiments have been carried out, process yields bio-oil and charcoal shortly, several parameters are achieved. Some further experiments are still needed for more detail parameters. Theresults may be used to design small-scale continuous model of productionsystem, which then can be developed into large-scale model that applicable for comercial use.

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