Design of volute shape of centrifugal fans

Lv, Yukun; Lv, Zheng-Wei; Li, Hongyang; Song, Bao-Jun; Cheng, Bo; Zhang, Bo

doi:10.1177/0957650915624034

Cited by 6 publications

(5 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The designer also needs to determine in advance the desired cross-sectional shape of the volute which can affect the overall dimensions of the volute and may affect the flow losses inside the volute. As only the top wall of the volute will be solved from equation (5), the boundary on both sides of the volute (the side walls), which are shared by all the cross-sections, should be given before the design can be started. If the volute is a twin-entry type used in turbocharging turbines, the central dividing wall of the two branches shall also be described.…”

Section: Boundary Conditions and Input Parametersmentioning

confidence: 99%

“…The numerical method is required to solve the dimensionless form of equations (2)(3)(4)(5). A two-dimensional mesh is proposed and is shown in Figure 1.…”

Section: Numerical Proceduresmentioning

confidence: 99%

“…Whitfield and Mohd Noor 4 described a non-dimensional conceptual design procedure for radial turbine volutes, and the variation of the volute centroid radius and area ratio with azimuth angle can be obtained respectively. Lv et al 5 considered that the centrifugal fan volute designed by the traditional one-dimensional free vortex model only performed well under the design conditions, so they proposed a method with an area factor and flow correcting coefficients to improve the performance at off-design conditions.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A two-dimensional method for radial turbine volute design

Wang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part A:

View full text Add to dashboard Cite

In this work, a new two-dimensional method is presented for turbine volute design. In this method, the continuity equation, energy equation, free vortex equation, and streamline equation are employed to solve the velocity field and to generate the volute profile. The physical model and mathematic solution to the governing equations are described in detail. A new volute for a turbocharger turbine is generated using this method and compared with the original, well-designed baseline volute. Different turbine operating conditions, including equal and unequal admission cases, were studied by CFD to compare turbine aerodynamic performance using the new and baseline volutes. The simulation results show that the efficiency of the new volute is about 0.4%–0.6% higher than the baseline under equal admission conditions. It is found that the improvement in turbine performance is mainly due to the more reasonable A/R distribution, which reduces the losses in the turbine. This work demonstrates that the proposed new method provides an effective way for radial turbine volute design, and can quickly create high performance volutes.

show abstract

Section: Boundary Conditions and Input Parametersmentioning

confidence: 99%

“…The numerical method is required to solve the dimensionless form of equations (2)(3)(4)(5). A two-dimensional mesh is proposed and is shown in Figure 1.…”

Section: Numerical Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A two-dimensional method for radial turbine volute design

Wang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part A:

View full text Add to dashboard Cite

show abstract

“…In the work of Baloni et al, 20 the performance of centrifugal blower is enhanced with an optimization process on the volute using Taguchi method and ANOVA approach. Lv et al 21,22 found that the volute width should be comprehensively determined according to other parameters. An appropriate width could improve the uniformity of the flow field within the fan and the fan performance.…”

Section: Introductionmentioning

confidence: 99%

Orthogonal optimization design of a Sirocco fan and numerical analysis on the internal flow characteristics

Liu

Wang

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part A:

View full text Add to dashboard Cite

The forward-curved multi-blade centrifugal fan, also termed as Sirocco fan, is characterized by its complex characteristics of internal flow within the impeller and volute. Currently most of the fans are designed with modifications or optimizations for certain geometric parameters which could not ensure the well compatibility of flow in the impeller and volute, thus it is difficult to improve the aerodynamic performances of the fans. In this paper, we performed a multi-parameter design of a Sirocco fan with optimizations on the geometric parameters of the impeller and volute. The geometric parameters of the volute were designed based on analysis of the internal flow patterns, and the influence from the impeller is also considered. Optimization on the geometric parameters was carried out using the steepest descent method to improve the static pressure rise and efficiency under the designed flow rate by taking into account the relevance of flow in the impeller and volute. The effect of the parametric optimization is evaluated and analyzed by large-eddy simulation (LES). It was found that the static pressure rise and efficiency of the optimized model increase by 1.8% and 5.0% compared with the baseline model, respectively. The static pressure rise fluctuates in a regularly periodic manner. The optimized model reduces the area of low-pressure recirculating flow at the center of the fan and the separated flow on the suction surface of the blades. The near-wall flow on the volute surface is more stable, and the pressure fluctuation around the volute tongue is reduced. The outflow of the volute exhibits better uniformity than the baseline model.

show abstract

“…Jiang et al [6] studied the influence of the cut volute profile on the aerodynamic and acoustic performances of the fan by experiment, which is useful for causing a flow structure of the impeller across near the second clearance and re-organizing the circumference distribution of the impeller flow status. Lv et al [7] proposed a design method for the volute radius with a flow-correcting coefficient and area factor-the volute is designed with or without area constraint. The results showed that the 2 of 23 efficiency and static pressure of the two designed fans were improved.…”

Section: Introductionmentioning

confidence: 99%

Effects of an Inclined Blade on the Performance of a Sirocco Fan

Cao²,

Xu³

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

The impeller is the primary working component of centrifugal fans, whose internal flow directly determines the performance of the whole system. This work presents a numerical investigation by using ANSYS-Fluent on the internal flow of a Sirocco fan to investigate the effects of the inclination angle of the blades on the fan performance. The orientation of the blade for the baseline model is strictly along the axial direction, while three inclination angles, i.e., 3.5°, 7.0°, and 10.5°, are chosen for the inclined blades of the modified impeller to improve the aerodynamic performance of the fan. The effects of the inclined blade are demonstrated by the variations in static pressure, efficiency, and pressure and velocity distributions at various inclination angles. The computed results reveal that there is an optimum inclination angle, which produces the best aerodynamic performance.

show abstract

Design of volute shape of centrifugal fans

Cited by 6 publications

References 24 publications

A two-dimensional method for radial turbine volute design

A two-dimensional method for radial turbine volute design

Orthogonal optimization design of a Sirocco fan and numerical analysis on the internal flow characteristics

Effects of an Inclined Blade on the Performance of a Sirocco Fan

Contact Info

Product

Resources

About