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Wenping Shao, Jingan Feng, Feng Zhang, Shu Wang, Yuhang Li and Jiangfeng Lv
To enhance the working efficiency and aerodynamic performance of the centrifugal fan in the air system of a cotton picker, a new type of centrifugal fan blade was designed by extracting the mid-arc section from the prototype blade and integrating an airf...
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Ce Zhang, Duanyang Geng, Haigang Xu, Xinao Li, Jiarui Ming, Duanxin Li and Qihuan Wang
The air distribution and speed uniformity of the cleaning fan in the cleaning room have a great influence on the working quality of the cleaning system of the harvester. In view of the problem of uneven air distribution in the cleaning room caused by imp...
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Madhwesh Nagaraj and Kota Vasudeva Karanth
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Jiangnan Zhang and Mehrdad Zangeneh
In this paper, we present the design and optimization of a centrifugal fan with requirements of maximizing the total-to-static pressure rise and total-to-static efficiency at two operating points and the maximum torque provided by the motor power using a...
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Shuang Sun, Jinhui Kang, Zhijun Lei, Zhen Huang, Haixv Si and Xiaolong Wan
The horseshoe vortex system at the leading edge of a low-pressure turbine (LPT) has unsteady flow characteristics, and the flow field in the downstream cascade channel also has unsteady characteristics. In this study, CFD simulations are performed with t...
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Martin Ottersten, Hua-Dong Yao and Lars Davidson
In this study, unsteady low-frequency characteristics in a voluteless low-speed centrifugal fan operating at a high mass flow rate are studied with improved delayed detached eddy simulation (IDDES). This study is motivated by a recent finding that the no...
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Martin Ottersten, Hua-Dong Yao and Lars Davidson
In this study, three voluteless centrifugal fans are compared for their aeroacoustic performances. The tonal noise is predicted by coupling the IDDES with Formulation 1A of Farassat. The sources of the tonal noise at the blade passing frequency (BPF" rol...
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Nicola Aldi, Nicola Casari, Michele Pinelli, Alessio Suman, Alessandro Vulpio, Ottavio Mantovani and Paolo Saccenti
In industrial applications such as chemical plants, cement factories, and glassmakers, large-sized centrifugal fans are commonly used for dust-laden flow processing. In many cases, the contamination is due to solid particles responsible for fouling and e...
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Frieder Lörcher, Sandra Hub, Marlène Sanjosé and Stéphane Moreau
For a backward curved centrifugal fan, reducing volume flow rate from design operating point towards part load yields an increase in noise emission together with a reduction of efficiency. The spectral content of the emerging noise emission can be charac...
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Rebecca Schäfer and Martin Böhle
Due to the fact that legal and market requirements are becoming stricter, fan noise reduction, in addition to energy efficiency, represent a challenge for fan product designers. Most experimental studies are associated with trial-and-error approaches. Th...
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