Tundish is the last refractory vessel in the steelmaking process. The fluid flow phenomena in tundish have a strong influence on the separation of non-metallic inclusions. The dispersive bubble wall （DBW） is a new m...Tundish is the last refractory vessel in the steelmaking process. The fluid flow phenomena in tundish have a strong influence on the separation of non-metallic inclusions. The dispersive bubble wall （DBW） is a new method in tundish metallurgy. A water model of a multi-strand tundish has been set up based on the Froude number and Reynold number similarity criteria. The effect of DBW＋weir on the flow pattern has been studied. The results show that this new structure of DBW＋weir is beneficial not only to uniform the temperature among different submerge entry nozzles but also to separate non-metallic inclusions from liquid steel. The DBW can capture the particles of non-metallic inclusions and make them float up to the surface.展开更多
Traditional medicine has not only made important contributions to the reproduction and prosperity of the Chinese nation for a long time,and it has also had a positive impact on human health and world civilization.Phar...Traditional medicine has not only made important contributions to the reproduction and prosperity of the Chinese nation for a long time,and it has also had a positive impact on human health and world civilization.Pharmaceutical policies have a significant impact on the development of the pharmaceutical industry.In this article,the research on the development of pharmaceutical policies after the founding of the People's Republic of China is summarized.This is of great significance to formulate scientific and efficient policy measures to promote the development of the pharmaceutical industry.展开更多
基金This work is financially supported by the National Natural Science Foundation of China (No. 50274007).
文摘Tundish is the last refractory vessel in the steelmaking process. The fluid flow phenomena in tundish have a strong influence on the separation of non-metallic inclusions. The dispersive bubble wall （DBW） is a new method in tundish metallurgy. A water model of a multi-strand tundish has been set up based on the Froude number and Reynold number similarity criteria. The effect of DBW＋weir on the flow pattern has been studied. The results show that this new structure of DBW＋weir is beneficial not only to uniform the temperature among different submerge entry nozzles but also to separate non-metallic inclusions from liquid steel. The DBW can capture the particles of non-metallic inclusions and make them float up to the surface.
基金Key Research Base of Humanities and Social Sciences in Guangxi Universities and Colleges:Development and Research Center for China-ASEAN Traditional Medicine(0501906419).
文摘Traditional medicine has not only made important contributions to the reproduction and prosperity of the Chinese nation for a long time,and it has also had a positive impact on human health and world civilization.Pharmaceutical policies have a significant impact on the development of the pharmaceutical industry.In this article,the research on the development of pharmaceutical policies after the founding of the People's Republic of China is summarized.This is of great significance to formulate scientific and efficient policy measures to promote the development of the pharmaceutical industry.
