Experimental study on fire spread over discrete fuel bed-Part II: Combined effects of wind and packing ratio

2022 ◽  
pp. 103520
Author(s):  
Qianqian He ◽  
Naian Liu ◽  
Xiaodong Xie ◽  
Linhe Zhang ◽  
Jiao Lei ◽  
...  
Keyword(s):  
Experimental Study ◽  
Fire Spread ◽  
Combined Effects

scholarly journals Experimental study on examining the fire load of a small compartment

2021 ◽  
Author(s):  
Gabriella László ◽  
Flóra Hajdu ◽  
Rajmund Kuti
Keyword(s):  
Numerical Simulation ◽  
Experimental Study ◽  
Fire Protection ◽  
Fire Safety ◽  
Fire Spread ◽  
Negative Effects ◽  
Fire Load ◽  
Scientific Methods ◽  
Burning Process ◽  
The People

Abstract In Hungary a lot of people live in condominiums or in block of flats where fire often occurs despite of precise design and effective fire protection arrangements. This means a hazard for the people living there, for the building constructions and also for the environment. A deeper knowledge of the burning process and examining the negative effects of fire load on building constructions with scientific methods are actual questions nowadays. In order to get to know the phenomena more accurately, fire spread in a bedroom was modeled and numerical simulation was carried out, which is presented in this paper in detail. These experiences may help increasing the fire safety and preventing fires in apartments. The simulations were carried out considering the characteristics of the Hungarian architecture.

scholarly journals Experimental Study of Combined Effects of Gamma and Laser Radiations on the Properties of Silicate Glass Materials

2015 ◽  
Vol 3 (3) ◽  
pp. 39-45
Author(s):  
R. T. Khaydarov ◽  
H. B. Beisinbaeva ◽  
R. R. Khaydarov ◽  
F. R. Tojinazarov ◽  
G. R. Berdiyorov ◽  
...  
Keyword(s):  
Experimental Study ◽  
Silicate Glass ◽  
Combined Effects

Combined Effects of Severity of Cleft Impairment and Facial Attractiveness on Social Perception: An Experimental Study

1993 ◽  
Vol 30 (1) ◽  
pp. 82-86 ◽  
Author(s):  
Joyce M. Tobiasen ◽  
John M. Hiebert
Keyword(s):  
Experimental Study ◽  
Children And Adolescents ◽  
Social Perception ◽  
Negative Impact ◽  
Facial Attractiveness ◽  
Social Perceptions ◽  
Combined Effects

Children and adolescents provided their impressions of stimulus faces that systematically varied in attractiveness and severity of cleft impairment. The results indicated that facial attractiveness is a consistent characteristic of cleft-impaired faces. However, facial attractiveness did not moderate the negative impact of cleft impairment on social perception. Reduced severity of impairment did moderate the negativity of social perception. The implications of these findings for our understanding of the effects of cleft impairment on social perceptions are discussed.

Fire behaviour in wheat crops – effect of fuel structure on rate of fire spread

2020 ◽  
Vol 29 (3) ◽  
pp. 258 ◽  
Author(s):  
Miguel G. Cruz ◽  
Richard J. Hurley ◽  
Rachel Bessell ◽  
Andrew L. Sullivan
Keyword(s):  
Experimental Study ◽  
Prediction Models ◽  
Fire Spread ◽  
Propagation Rate ◽  
Forward Rate ◽  
Fire Behaviour ◽  
Natural Grass ◽  
Spread Model ◽  
Crop Condition ◽  
Fire Spread Model

A field-based experimental study was conducted in 50×50m square plots to investigate the behaviour of free-spreading fires in wheat to quantify the effect of crop condition (i.e. harvested, unharvested and harvested and baled) on the propagation rate of fires and their associated flame characteristics, and to evaluate the adequacy of existing operational prediction models used in these fuel types. The dataset of 45 fires ranged from 2.4 to 10.2kmh−1 in their forward rate of fire spread and 3860 and 28000 kWm−1 in fireline intensity. Rate of fire spread and flame heights differed significantly between crop conditions, with the unharvested condition yielding the fastest spreading fires and tallest flames and the baled condition having the slowest moving fires and lowest flames. Rate of fire spread in the three crop conditions corresponded directly with the outputs from the models of Cheney et al. (1998) for grass fires: unharvested wheat → natural grass; harvested wheat (~0.3m tall stubble) → grazed or cut grass; and baled wheat (<0.1m tall stubble) → eaten-out grass. These models produced mean absolute percent errors between 21% and 25% with reduced bias, a result on par with the most accurate published fire spread model evaluations.

scholarly journals Experimental Study and Analysis of XPS Vertical Countercurrent Fire Spread

2018 ◽  
Vol 211 ◽  
pp. 945-953 ◽  
Author(s):  
Miao-miao Yu ◽  
Guo-qing Zhu ◽  
Qing-xuan Meng
Keyword(s):  
Experimental Study ◽  
Fire Spread

Experimental Study of Cable Fire Spread in Electronic Cabinet

2013 ◽  
Vol 664 ◽  
pp. 964-969
Author(s):  
Chao Zhou ◽  
Xin Qun Wang ◽  
Jun Qin ◽  
Lu Yi Chen ◽  
Gang Xuan Lao ◽  
...  
Keyword(s):  
Experimental Study ◽  
Fire Spread ◽  
Ventilation Rate ◽  
Electronic Cabinet ◽  
Cable Fire ◽  
Real Scale ◽  
Fire Experiments

Three cases of cables fire experiments with different ventilation rate in real scale electronic cabinet have been carried out. In each experiment, five cables with 14mm in out diameter and four copper conductors with 1650mm in length were used. the insulation and cover of the cables was combustible .Temperature of the fire cables, CO ,O2as well as temperature in different location in the center of the cabinet in the fire cabinet were measured as a function of time. The key role of the ventilation rate on the temperature in the center of the cabinet and the concentration of CO and O2were clearly shown, but the influence on fire spread of cable fire was not so much significantly.

Experimental Study on Cement Mortar with Bentonite

2013 ◽  
Vol 671-674 ◽  
pp. 1741-1744 ◽  
Author(s):  
Hsien Hua Lee ◽  
C. W. Wang
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Marine Environment ◽  
Cement Mortar ◽  
Combined Effects ◽  
Concrete Material ◽  
Corrosion Resistant ◽  
Steel Bars ◽  
Reinforced Steel ◽  
Physical And Chemical

For an infrastructure construction located in marine environments, maintaining good durability for the structures always imposes serious challenges, especially for the structure made of reinforced concrete. Concrete exposed to marine environment may deteriorate as a result of combined effects of both physical and chemical actions from marine environment. Corrosion of the reinforced steel bars that are embedded in the concrete is the most serious problem. Therefore, a method to protect the reinforced concrete in the marine environment from damages due to material deterioration and corrosion is proposed in this study. The method is through the application of bentonite material by utilizing its very finely divided form so that the larger capillary pores in concrete can be filled up. In this way, the impermeability of concrete material can be enhanced and then improve the corrosion resistant ability of the material.

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