Numerical investigations on the effect of volute casing treatment for performance augmentation in a centrifugal fan

Nilugal, Manjunath L and Karanth, Vasudeva K and Madhwesh, N (2022) Numerical investigations on the effect of volute casing treatment for performance augmentation in a centrifugal fan. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 236 (6). pp. 2791-2802. ISSN 0954-4062

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Abstract

This article presents the effect of volute chamfering on the performance of a forward swept centrifugal fan. The numerical analysis is performed to obtain the performance parameters such as static pressure rise coefficient and total pressure coefficient for various flow coefficients. The chamfer ratio for the volute is optimized parametrically by providing a chamfer on either side of the volute. The influence of the chamfer ratio on the three dimensional flow domain was investigated numerically. The simulation is carried out using Re-Normalisation Group (RNG) k-e turbulence model. The transient simulation of the fan system is done using standard sliding mesh method available in Fluent. It is found from the analysis that, configuration with chamfer ratio of 4.4 is found be the optimum configuration in terms of better performance characteristics. On an average, this optimum configuration provides improvement of about 6.3% in static pressure rise coefficient when compared to the base model. This optimized chamfer configuration also gives a higher total pressure coefficient of about 3% validating the augmentation in static pressure rise coefficient with respect to the base model. Hence, this numerical study establishes the effectiveness of optimally providing volute chamfer on the overall performance improvement of forward bladed centrifugal fan.

Item Type: Article
Uncontrolled Keywords: Centrifugal fan, volute chamfer, chamfer ratio, turbulence, total pressure coefficient
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 23 Jun 2022 05:32
Last Modified: 23 Jun 2022 05:32
URI: http://eprints.manipal.edu/id/eprint/158857

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