Influence of various volute designs on volute overall performance

Qiang, Xiaoqing; Teng, Jinfang; Du, Zhimin

doi:10.1007/s11630-010-0416-7

Cited by 14 publications

(6 citation statements)

References 7 publications

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“…With the increasing popularity of wind tunnel experimental equipment and its ability to provide a wider range of basic information, it is widely used in wind experiments [56,57].…”

Section: Research On Noise Reduction Of Leading-edge Bionic Bladesmentioning

confidence: 99%

A Review of Bionic Structures in Control of Aerodynamic Noise of Centrifugal Fans

Zhou

Xiang

et al. 2023

Energies

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Due to the complexity of the working conditions and the diversity of application scenarios, the normal operation of a fan, whether volute tongue, volute shell surface, or blade, often encounters some unavoidable problems, such as flow separation, wear, vibration, etc.; the aerodynamic noise caused by these problems has a significant impact on the normal operation of the fan. However, despite the use of aerodynamic acoustics to design low-noise fans or the use of sound absorption, sound insulation, and sound dissipation as the main traditional noise control techniques, they are in a state of technical bottleneck. Thus, the search for more efficient methods of noise reduction is looking toward the field of bionics. For this purpose, this paper first analyzes the mechanism of fan noise in the volute tongue and blades, and then, this paper reviews the noise control mechanism and improvement research using the bionic structures in the volute tongue structure, the contact surface of the volute shell, and the leading and trailing edges of the blade in the centrifugal fan. Finally, the current challenges and prospects of bionic structures for aerodynamic noise control of centrifugal fans are discussed.

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“…With the increasing popularity of wind tunnel experimental equipment and its ability to provide a wider range of basic information, it is widely used in wind experiments [56,57].…”

Section: Research On Noise Reduction Of Leading-edge Bionic Bladesmentioning

confidence: 99%

A Review of Bionic Structures in Control of Aerodynamic Noise of Centrifugal Fans

Zhou

Xiang

et al. 2023

Energies

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“…Meghnine et al 15 carried out three-dimensional Computational Fluid Dynamics (CFD) simulations for optimizing the design of quasi-rectangular shape of the volute cross sections of one mixed flow turbine. A detailed analysis of the impact of the volute cross-sectional area on performance has been carried out by Qiang et al 16 Their results showed a significant impact of the radial location of the cross-section on volute performance. Morrison et al 17 performed a set of CFD simulations for investigating the effect of the span distribution of the flow angles at the entry of the impeller on the overall performance and loss characteristics of turbocharger turbines for automotive applications.…”

Section: Introductionmentioning

confidence: 99%

A numerical study for correlating performance versus number of blades and investigating flow characteristics and loss generation of an automotive radial flow turbine

Ketata

Driss

2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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Hybridization of engines is the future technology to overcome the increasing emissions of CO2 and pollutants from internal combustion engines. So far, the current technology, called downsizing, involves reducing engine size while maintaining continuous engine boosting with a turbocharger. It is well known that the radial turbine, an essential component of turbochargers, is a seat of various loss mechanisms such as incidence losses which significantly affect performance. As a contribution for further improving performance and reducing loss generation in radial turbines, this study investigates the effect of the blade number on performance and loss generation within a radial turbine of small scale turbocharger. To this end, six radial turbines were designed with several blade numbers ranging from three up to thirteen. The flow solution was computed by solving the Navier-Stokes equations using a CFD solver. The numerical results were validated against experiments. The results revealed that the impeller of 11 blades provides better performance than the other investigated designs. The results showed a substantial effect of the number of blades on the distribution of flow characteristics and loss generation. The efficiency, mass flow rate, output torque, blade loading, and leakage flow through the clearance gap of the turbine were correlated to the number of blades.

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“…Optimizing the design of the components of a centrifugal compressor is an effective method that can be used to improve its performance. Xiaoqing Qiang [1] studied the influence of the volute design on the global performance of the volute, and compared ten kinds of volute design schemes by CFD (computational fluid dynamics) simulation. The final results show that, compared with the forward or symmetrical volute, the backward volute has a more reasonable and uniform velocity field and better comprehensive performance under different working conditions.…”

Section: Introductionmentioning

confidence: 99%

Effect of Vaneless Diffuser Shape on Performance of Centrifugal Compressor

et al. 2020

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The influence of four different vaneless diffuser shapes on the performance of centrifugal compressors is numerically studied in this paper. One of the studied shapes was a parallel wall diffuser. Two others had the width reduced only from hub and shroud and the rest had the width reduced from hub and shroud divided evenly. Then the numerical simulation was employed and the overall compressor aerodynamic performance was studied. The detailed velocity and pressure distribution and energy loss within the centrifugal compressor with different diffuser geometries and different operating conditions were analyzed. The results revealed that shroud pinch significantly improved the overall compressor aerodynamic performance more than any other pinch types, and the best performance can be achieved by pinched diffusers under the design condition compared with pinched diffusers under the near surge condition or choking condition. The range of energy loss, namely the static entropy area in the compressor, become reduced with the above three pinches diffusers.

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Influence of various volute designs on volute overall performance

Cited by 14 publications

References 7 publications

A Review of Bionic Structures in Control of Aerodynamic Noise of Centrifugal Fans

A Review of Bionic Structures in Control of Aerodynamic Noise of Centrifugal Fans

A numerical study for correlating performance versus number of blades and investigating flow characteristics and loss generation of an automotive radial flow turbine

Effect of Vaneless Diffuser Shape on Performance of Centrifugal Compressor

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