Numerical computation of the flow noise for the centrifugal pump with considering the impeller outlet width

Luan, Hengxuan; Chen, Qingguang; Weng, Liyuan; Luan, Yuanzhong; Li, Jie

doi:10.21595/jve.2016.16656

Cited by 10 publications

(8 citation statements)

References 20 publications

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“…There is only one slab in the computational domain (Bamberger et al, 2020). The logarithmic-based wall functions are used on all solid walls and periodic boundary conditions (Luan et al, 2016;Myrzakhmetov et al, 2020) are implemented. It is ensured that there will be no slip circumstances at any stable, stationary, or rotating surface and that there will be uniform inflow conditions as well as free-flow conditions at the inlet and outflow of the flow, respectively.…”

Section: Methodsmentioning

confidence: 99%

Centrifugal Pump Design: An Optimization

Nguyễn¹,

VO²

2022

EPSTEM

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A centrifugal pump is an efficient piece of machinery that is often used in the activities of our everyday lives as well as the production of industrial goods. Due to the ever-increasing demands of our contemporary lifestyle, the process of designing a pump is becoming more authoritarian and demanding. In order to assist designers in overcoming these limits, an optimization algorithm would be suggested. This algorithm would help designers use optimum design methodologies and reduce risk throughout the manufacturing stage. ANSYS's Computational Fluid Dynamics (CFD) tool was used to develop numerical models for simulation. These models were created using ANSYS. For the purpose of the multi-objective optimization design, the simulation's best-chosen model was taken into consideration. This algorithm was used throughout the process of designing the ideal solution. Several design models were created by selecting characteristics such as the size of the pump volute casing section, the tongue's length, and the tongue's angle. The findings demonstrate that the provided strategy is viable for resolving the issue with the optimal design. These findings have the potential to serve as an encouraging reference for companies that manufacture centrifugal pumps, as well as researchers who are interested in applying their invention and development to the pump design sector in the future.

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Section: Methodsmentioning

confidence: 99%

Centrifugal Pump Design: An Optimization

Nguyễn¹,

VO²

2022

EPSTEM

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“…40 ' 41 Hydrolysis is followed by condensation of the silanols, which results in the formation of an amorphous aminopropyl functional polymer layer consisting of Si-O-Si bonds and functional end groups such as hydroxyl (−OH), amine (−NH 3 +), and methyl (−CH 3 ). 42,43 These end groups interact noncovalently via hydrogen bonding, hydrophobic, and electrostatic interactions with AuNR-IgG bioconjugates resulting in the formation of a stable organosilica layer around them. Next, bifunctional PEG (methoxy-PEG-silane) was covalently grafted on to the free regions of the organosilica layer.…”

Section: Polymer Encapsulation Strategy To Achieve Refreshabilitymentioning

confidence: 99%

“…PEG chains shield the functional groups present on the polymer layer, thus minimizing nonspecific binding. 39,41,43 Biosensors with the organosilica protective layer were then exposed to a range of concentration of anti-IgG (240 pg to 24 μg) to allow antigen-antibody binding. The plasmonic biochips were subsequently exposed to an aqueous solution of SDS to overcome the noncovalent interactions, dissociate the antibodyantigen pair, and refresh the biochip.…”

Section: Polymer Encapsulation Strategy To Achieve Refreshabilitymentioning

confidence: 99%

“…34 After the formation of an organosilica layer, we observed Raman bands at 1024, 1056, 1205, and 1230 cm −1 corresponding to Si-O-R stretching, Si-O-Si stretching, and −CH 2 bending. 39,43,44 It is important to note that if the entire antibody, including its antigen binding sites, is encapsulated within the polymer layer, it will severely compromise the biorecognition capability of IgG. On the other hand, if the encapsulation is insufficient, then the protection against SDS and long-term stability of the antibody will be limited.…”

Section: Characterization and Optimization Of The Organosilica Silica Layer Thicknessmentioning

confidence: 99%

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Refreshable Nanobiosensor Based on Organosilica Encapsulation of Biorecognition Elements

Gupta

Luan

Chakrabartty

et al. 2020

ACS Appl. Mater. Interfaces

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Implantable and wearable biosensors that enable monitoring of biophysical and biochemical parameters over long durations are highly attractive for early and presymptomatic diagnosis of pathological conditions and timely clinical intervention. Poor stability of antibodies used as biorecognition elements and the lack of effective methods to refresh the biosensors upon demand without severely compromising the functionality of the biosensor remain significant challenges in realizing protein biosensors for long-term monitoring. Here, we introduce a novel method involving organosilica encapsulation of antibodies for preserving their biorecognition capability under harsh conditions, typically encountered during the sensor refreshing process, and elevated

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“…Guo et al 13 discussed that impeller blade wrap angle, blade outlet angle and blade inlet diameter have a great influence on the hydraulic and acoustic performance of centrifugal pump. Luan et al 14 studied the outlet width of the impeller by using the boundary element method and found that changing the outlet width of the impeller has a certain impact on performance and noise. Cheng et al 15 analyzed the relationship between the guide vane of the nuclear main pump and the volute, it could be concluded that the location of the guide vane has a great influence on the pressure pulsation of the nuclear main pump.…”

Section: Introductionmentioning

confidence: 99%

Study on the influence of blade outlet cutting on hydraulic noise of centrifugal pump with low specific speed

Cheng

Wang

2020

Advances in Mechanical Engineering

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In order to study the influence of blade outlet cutting width on hydrodynamic excitation noise of the centrifugal pump with low specific speed, five schemes are used to perform V-shaped cutting on the outlet of the impeller blade are studied in this study. Based on Lighthill acoustic analogy, combining computational fluid dynamics and computational acoustics, RNG k-ε turbulence model is used to calculate internal unsteady flow field of the centrifugal pump, and the acoustic solution is based on the flow field calculation. The results show that the pressure pulsation can reflect the sound pressure level to a certain extent; proper cutting of the blade outlet can improve the flow state of the rear cavity of the centrifugal pump and make the flow uniform; the V-shaped cutting of the blade outlet also can reduce the dynamic and static interference between the impeller outlet and the volute tongue, effectively reducing the sound pressure level of the internal sound field, when the blade outlet cutting width is a/ b2 = 33.33%, the inlet sound pressure level and the outlet sound pressure level are decreased by 4.8% and 7.2%, respectively. In terms of internal sound field, the sound pressure level at the outlet of the pump is obviously higher than that at the inlet.

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Numerical computation of the flow noise for the centrifugal pump with considering the impeller outlet width

Cited by 10 publications

References 20 publications

Centrifugal Pump Design: An Optimization

Centrifugal Pump Design: An Optimization

Refreshable Nanobiosensor Based on Organosilica Encapsulation of Biorecognition Elements

Study on the influence of blade outlet cutting on hydraulic noise of centrifugal pump with low specific speed

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