scholarly journals EXPERIMENTAL STUDIES ON DIFFICULTY OF EVACUATION FROM UNDERGROUND SPACES UNDER INUNDATED SITUATIONS USING REAL SCALE MODELS

2011 ◽  
Vol 67 (1) ◽  
pp. 12-27
Author(s):  
Yasuyuki BABA ◽  
Taisuke ISHIGAKI ◽  
Keiichi TODA ◽  
Hajime NAKAGAWA
Keyword(s):  
Experimental Studies ◽  
Scale Models ◽  
Real Scale

scholarly journals Flow structure around an actual willow patch under different depth conditions

2018 ◽  
Vol 40 ◽  
pp. 02049
Author(s):  
Chanjoo Lee ◽  
Donggu Kim ◽  
Sungjung Kim ◽  
Un Ji ◽  
Jihyun Kim ◽  
...  
Keyword(s):  
Flow Measurement ◽  
Flash Flood ◽  
Experimental Studies ◽  
Hydrodynamic Modelling ◽  
Snow Melt ◽  
Key Factors ◽  
Environmental Aspects ◽  
Real Scale ◽  
Natural Channel ◽  
Made In

Vegetation is one of the key factors in river management where environmental aspects as well as flood protection should be taken into consideration. Because of this, numerous studies have been done including experiments and hydrodynamic modelling. Because most of experimental studies were made in indoor laboratory flumes with artificial trees, there are still limitations in transfer of their result to actual channels. REC (River Experiment Center) of Korea has been operating three real-scale, nature-like outdoor experimental channels. In a straight channel, several 4x2 m actual willow patches were planted and have been grown last three years for studies on flow vegetation interaction. A set of intensive flow measurement was made around the first upstream willow patch using ADVs together with measurement of vegetation properties. The experiments were made under several different depth conditions simulating snow-melt and flash-flood. Distribution of flow around and through the patch was characterized along with vertical profiles. The results of the experiment enhance understanding on interaction of flow and actual vegetation in a natural channel and may also provide information on flow resistance used for hydrodynamic modelling and validation.

Experimental Studies on Fire Spread Over Glass Fac¸ade

2010 ◽  
Author(s):  
C. L. Chow ◽  
W. K. Chow
Keyword(s):  
Southern China ◽  
Experimental Studies ◽  
Fire Spread ◽  
Glass Pane ◽  
Air Supply ◽  
Smoke Spread ◽  
Upper Level ◽  
Set Up ◽  
Fire Flame ◽  
Real Scale

There are concerns on the behaviour of glass fac¸ade under a big fire. Real-scale experiments on a single-skin fac¸ade were carried out at a large laboratory of a sizable aluminum manufacturing plant in Southern China. Burning behaviour of a three-storey high single-skin glass fac¸ade with double glazing due to an adjacent big room fire was studied. Part of the fac¸ade of width 12 m and height 13 m was installed in a testing tower. A glass pane of the fac¸ade was taken out with a model fire chamber placed next to the opening. Flashover in the chamber was set up by burning a 2 MW gasoline fire. Flame and smoke spread from the chamber would move up along the glass fac¸ade. Air temperature outside the glazing above the fire chamber was measured. It is observed that flame spread out of the opening will be attached to the upper levels. The glass fac¸ade at that level will be heated up and broken. Flame can spread to the room at the upper level. Another flashover fire will then occur with adequate air supply. This scenario on having a post-flashover fire in an adjacent upper room should be included in hazard assessment in buildings with glass fac¸ade.

Design of the diffuser with hemispheres using 1:10 and real scale models

2006 ◽  
Vol 120 (5) ◽  
pp. 3186-3186
Author(s):  
Shin‐ichi Sato ◽  
Jin Yong Jeon
Keyword(s):  
Scale Models ◽  
Real Scale

Acoustics on real scale models

1992 ◽  
Author(s):  
P. Gaudiani ◽  
J. L. Mari
Keyword(s):  
Scale Models ◽  
Real Scale

scholarly journals The case for examining fluid flow in municipal solid waste at the pore-scale – A review

2019 ◽  
Vol 37 (4) ◽  
pp. 315-332 ◽  
Author(s):  
Syed Muaaz-Us-Salam ◽  
Peter John Cleall ◽  
Michael John Harbottle
Keyword(s):  
Fluid Flow ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Transport Phenomena ◽  
Experimental Studies ◽  
Pore Scale ◽  
Scale Models ◽  
Scale Modelling ◽  
Flow Through ◽  
Selection Of

In this paper, we discuss recent efforts from the last 20 years to describe transport in municipal solid waste (MSW). We first discuss emerging themes in the field to draw the reader’s attention to a series of significant challenges. We then examine contributions regarding the modelling of leachate flow to study transport via mechanistic and stochastic approaches, at a variety of scales. Since MSW is a multiphase, biogeochemically active porous medium, and with the aim of providing a picture of transport phenomena in a wider context, we then discuss a selection of studies on leachate flow incorporating some of the complex landfill processes (e.g. biodegradation and settlement). It is clear from the literature survey that our understanding of transport phenomena exhibited by landfilled waste is far from complete. Attempts to model transport have largely consisted of applying representative elementary-scale models (the smallest volume which can be considered representative of the entire waste mass). Due to our limited understanding of fluid flow through landfilled waste, and the influence of simultaneously occurring biogeomechanical processes within the waste mass, elementary-scale models have been unable to fully describe the flow behaviour of MSW. Pore-scale modelling and experimental studies have proven to be a promising approach to study fluid flow through complex porous media. Here, we suggest that pore-scale modelling and experimental work may provide valuable insights into transport phenomena exhibited by MSW, which could then be used to revise elementary-scale models for improved representation of field-scale problems.

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