Next Article in Journal
Configuration Optimization and Performance Comparison of STHX-DDB and STHX-SB by A Multi-Objective Genetic Algorithm
Previous Article in Journal
Investigation of Thermal Comfort Responses with Fuzzy Logic
Open AccessArticle

Optimal Design of a Novel ‘S-shape’ Impeller Blade for a Microbubble Pump

1
Department of Mechanical Engineering, Hanyang University, 55 Hanyangdeahak-ro, Sangnok-gu, Ansan, Gyeonggi-do 15588, Korea
2
Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology, 283, Goyangdae-ro, Ilsanseo-gu, Goyang-si, Gyeonggi-do 10223, Korea
*
Author to whom correspondence should be addressed.
Energies 2019, 12(9), 1793; https://doi.org/10.3390/en12091793
Received: 13 April 2019 / Revised: 3 May 2019 / Accepted: 8 May 2019 / Published: 11 May 2019
(This article belongs to the Section Energy and Environment)
The newly designed impeller blade, a so-called novel ‘S-shape’ blade, used for microbubble pumps has been introduced to enhance pump performance. Unlike a conventional blade having separated blades, like cantilever-shape blades, the newly designed impeller has a continuous blade, thus having a relatively robust structure as compared to a conventional impeller. The optimal blade design of the ‘S-shape’ blade has been demonstrated to obtain a higher pump efficiency. To analyze the three-dimensional flow field inside the pump by numerical simulation, a general analysis code, ANSYS CFX, is employed in the present work. The computed pump efficiency has a maximum error of 4 percent compared to the experimental data. The optimal design of the pump impeller blade is based on geometric constraints considering blade manufacturing, and uses three design variables: the number of blades, the blade thickness and the radius of the blade rib. The response surface method, a global optimization method, is employed to optimize the pump impeller blade. Throughout the blade optimization of the ‘S-shape’ blade, it is found that the chief influence on the pump efficiency is the number of the impeller blades. Pump efficiency, an object function, is increased by up to 35.3 percent, which corresponds to a 3.7 percent increase compared to the reference one. It is no use to say that the ‘S-shape’ blade having a continuously connected blade has more rigid characteristics. The larger pressure increases of the optimized pump along with the volute casing wall is observed from the middle position of the rotational direction, which comes from the increase of momentum energy due to larger circulating flow inside each blade passage as compared to the reference one. The detailed flow field inside the pump blades is also analyzed and compared. View Full-Text
Keywords: microbubble pump; ANSYS CFX; experimental validation; blade optimization; pump efficiency; response surface method microbubble pump; ANSYS CFX; experimental validation; blade optimization; pump efficiency; response surface method
Show Figures

Figure 1

MDPI and ACS Style

Jeon, S.-Y.; Yoon, J.-Y.; Jang, C.-M. Optimal Design of a Novel ‘S-shape’ Impeller Blade for a Microbubble Pump. Energies 2019, 12, 1793. https://doi.org/10.3390/en12091793

AMA Style

Jeon S-Y, Yoon J-Y, Jang C-M. Optimal Design of a Novel ‘S-shape’ Impeller Blade for a Microbubble Pump. Energies. 2019; 12(9):1793. https://doi.org/10.3390/en12091793

Chicago/Turabian Style

Jeon, Seok-Yun; Yoon, Joon-Yong; Jang, Choon-Man. 2019. "Optimal Design of a Novel ‘S-shape’ Impeller Blade for a Microbubble Pump" Energies 12, no. 9: 1793. https://doi.org/10.3390/en12091793

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop