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To explore the premixed methane-air flame microstructure behavior and the flame-flow interaction,the premixed methane/air flame was studied in a semi-vented chamber.A high speed camera and schlieren images methods were used to record the processes of interaction between rarefaction wave and flame.Meanwhile,a pressure sensor was utilized to catch the pressure variation in the process of flame propagation.The experiment results showed that the interference of rarefaction wave on flame caused the flame front structure change,which led to the flame transition from laminar to turbulent quickly.The rarefaction wave intervened in the flame by turning the flame front surface into dentiform structure.The violent turbulent combustion began to appear in part of the flame front and spreaded to the whole flame front surface.The rarefaction also decreased the flame propagation speed. 相似文献
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威尼斯建筑双年展展示空间的演变与利用 总被引:1,自引:0,他引:1
威尼斯建筑双年展作为世界最为重要的建筑展览之一,其成功不仅在于先锋建筑理念的推广与优秀建筑师的参与,同样包括其对建筑展示空间与场地的利用。本文通过两个侧面对这一问题进行阐释。首先通过场地与场馆演变的介绍说明其对历史空间的利用所产生的独特场所特征;同时通过对策展理念的分析阐述其对展示空间应用的影响。 相似文献
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