Journal ArticleDOI
Measurement of the neutral plane of an internal fire whirl using the background-oriented Schlieren technique for a vertical shaft model of a high-rise building
ChungHwei Su,JiaHong Bai +1 more
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TLDR
In this article, the background-oriented Schlieren (BOS) technique was used to visualize the neutral plane when a fire whirl occurs in a vertical shaft with a single corner gap.About:
This article is published in Measurement.The article was published on 2016-01-01. It has received 10 citations till now. The article focuses on the topics: Fire whirl & Neutral plane.read more
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A Review of High-Rise Ventilation for Energy Efficiency and Safety
Haohan Sha,Dahai Qi +1 more
TL;DR: In this article, a review of previous studies on energy efficiency and building safety for high-rise ventilation, including natural ventilation, mechanical ventilation and hybrid ventilation, is presented, and the research gap is also discussed.
Journal ArticleDOI
Background oriented schlieren technique with fast Fourier demodulation for measuring large density-gradient fields of fluids
TL;DR: In this paper , a fast Fourier demodulation called Fast Checkerboard Demodulation (FCD) was employed to detect the apparent displacement of a background image caused by the density gradient of the fluid in front of the background.
Journal ArticleDOI
Visualization of hot flows of tall space fires in model experiments with Schlieren Photography technique.
TL;DR: Schlieren Photography was proved capable of recording and visualizing the dynamic flow of hot air immediately, directly and accurately in tall space model, and showed highly similar hot air flow patterns.
Journal ArticleDOI
Analysis of tilted neutral planes for tall space fires with unsymmetrical openings using numerical simulation and Schlieren photography technique
ChungHwei Su,ShiuanCheng Wang +1 more
TL;DR: In this paper, Wang et al. analyzed the variations in the neutral plane when a tall space with unsymmetrical openings is on fire and showed that the neutral planes of the fire scene were not always horizontal.
Journal ArticleDOI
A study of internal fire whirl in a vertical shaft model with partially open roof
TL;DR: In this paper, an internal fire whirl (IFW) can be generated readily in a tall vertical shaft model under appropriate ventilation provisions, where a 7 cm diameter fuel tray of n-propanol was used.
References
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Journal ArticleDOI
Principle and applications of the background oriented schlieren (BOS) method
Hugues Richard,Markus Raffel +1 more
TL;DR: In this article, the effect of Reynolds number on vortex formation from the blade tips of a Eurocopter BK117 and a large US utility helicopter was investigated in full-scale flight tests.
Journal ArticleDOI
Background-oriented schlieren (BOS) techniques
TL;DR: The main advantages of this technique, the experimental simplicity and the robustness of correlation-based digital analysis, mean that it is widely used, and variant versions are reviewed in the article.
Journal ArticleDOI
On the use of helium-filled soap bubbles for large-scale tomographic PIV in wind tunnel experiments
Fulvio Scarano,Sina Ghaemi,Giuseppe Carlo Alp Caridi,Johannes Bosbach,Uwe Dierksheide,Andrea Sciacchitano +5 more
TL;DR: In this article, the authors evaluated the flow tracing fidelity of sub-millimetre diameter helium-filled soap bubbles (HFSB) for low-speed aerodynamics and concluded that HFSB do represent a valid alternative for quantitative velocimetry in wind tunnel aerodynamic experiments.
Journal ArticleDOI
A comparison of three quantitative schlieren techniques
TL;DR: Three quantitative schlieren techniques applied to the measurement and visualization of a two-dimensional laminar free-convection boundary layer are compared, with good results and requires less expensive apparatus than the other methods, but lacks the simplification of parallel light that they feature.
Journal ArticleDOI
Assessment and application of quantitative schlieren methods: Calibrated color schlieren and background oriented schlieren
TL;DR: In this paper, two quantitative schlieren methods are assessed and compared: calibrated color Schlieren (CCS) and back-ground oriented schleren (BOS) for measuring the light deflection angle in two spatial directions, and hence the projected density gradient vector field.
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