The plenum chamber of a heat setting machine is a key structure for distributing hot air to different air channels.Its outlet velocity uniformity directly determines the heating uniformity of textiles,significantly af...The plenum chamber of a heat setting machine is a key structure for distributing hot air to different air channels.Its outlet velocity uniformity directly determines the heating uniformity of textiles,significantly affecting the heat setting performance.In a traditional heat setting machine,the outlet airflow maldistribution of the plenum chamber still exists.In this study,a novel plenum chamber with an airfoil baffle was established to improve the uniformity of the velocity distribution at the outlet in a heat setting machine.The structural influence of the plenum chamber on the velocity distribution was investigated using a computational fluid dynamics program.It was found that a chamber with a smaller outlet partition thickness had a better outlet velocity uniformity.The structural optimization of the plenum chamber was conducted using the particle swarm optimization algorithm.The outlet partition thickness,the transverse distance and the longitudinal distance of the optimized plenum chamber were 20,686.2 and 274.6 mm,respectively.Experiments were carried out.The experimental and simulated results showed that the optimized plenum chamber with an airfoil baffle could improve the outlet velocity uniformity.The air outlet velocity uniformity index of the optimized plenum chamber with an airfoil baffle was 4.75%higher than that of the plenum chamber without an airfoil baffle and 5.98%higher than that of the conventional chamber with a square baffle in a commercial heat setting machine.展开更多
Miao nationality is an ancient minority with rich culture and long history,especially for its handicraft art.The Miao nationality migrated to western Hubei still retain their own cultural customs and has also experien...Miao nationality is an ancient minority with rich culture and long history,especially for its handicraft art.The Miao nationality migrated to western Hubei still retain their own cultural customs and has also experienced the integration of Tujia nationality and Han nationality,with high research and inheritance value.Based on the policy guidance of beautiful countryside construction and all-for-one tourism transformation,combined with the theory of local landscape design,the ways to revitalize the economy and inherit the culture of traditional villages of ethnic minorities in western Hubei are explored,so as to provide the reference for construction and development of traditional villages in other regions.展开更多
基金National Natural Science Foundation of China(No.62173307)the Key R&D Projects of Science and Technology Department of Zhejiang Province,China(Nos.2023C01158,2022C01065 and 2022C01188)the Fundamental Research Funds of Zhejiang Sci-Tech University,China(No.22242298-Y)。
文摘The plenum chamber of a heat setting machine is a key structure for distributing hot air to different air channels.Its outlet velocity uniformity directly determines the heating uniformity of textiles,significantly affecting the heat setting performance.In a traditional heat setting machine,the outlet airflow maldistribution of the plenum chamber still exists.In this study,a novel plenum chamber with an airfoil baffle was established to improve the uniformity of the velocity distribution at the outlet in a heat setting machine.The structural influence of the plenum chamber on the velocity distribution was investigated using a computational fluid dynamics program.It was found that a chamber with a smaller outlet partition thickness had a better outlet velocity uniformity.The structural optimization of the plenum chamber was conducted using the particle swarm optimization algorithm.The outlet partition thickness,the transverse distance and the longitudinal distance of the optimized plenum chamber were 20,686.2 and 274.6 mm,respectively.Experiments were carried out.The experimental and simulated results showed that the optimized plenum chamber with an airfoil baffle could improve the outlet velocity uniformity.The air outlet velocity uniformity index of the optimized plenum chamber with an airfoil baffle was 4.75%higher than that of the plenum chamber without an airfoil baffle and 5.98%higher than that of the conventional chamber with a square baffle in a commercial heat setting machine.
基金General Social Science Project of Hubei Department of Education in 2018(18G147)General Project of Bachu Art Development Research Center,Key Research Base of Humanities and Social Sciences in Colleges and Universities of Hubei Province in 2018(2018KF04).
文摘Miao nationality is an ancient minority with rich culture and long history,especially for its handicraft art.The Miao nationality migrated to western Hubei still retain their own cultural customs and has also experienced the integration of Tujia nationality and Han nationality,with high research and inheritance value.Based on the policy guidance of beautiful countryside construction and all-for-one tourism transformation,combined with the theory of local landscape design,the ways to revitalize the economy and inherit the culture of traditional villages of ethnic minorities in western Hubei are explored,so as to provide the reference for construction and development of traditional villages in other regions.
