Study on Effects of Double-Arc Non-Uniform Blades on the Flow Control and Aerodynamic Performance of Multi-Blade Centrifugal Fan

PENG Xiaokang; MA Yanpeng; TIAN Chenye; JIANG Jiwu; LIU Xiaomin

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Study on Effects of Double-Arc Non-Uniform Blades on the Flow Control and Aerodynamic Performance of Multi-Blade Centrifugal Fan

更新时间：2026-03-19

- Study on Effects of Double-Arc Non-Uniform Blades on the Flow Control and Aerodynamic Performance of Multi-Blade Centrifugal Fan
- JOURNAL OF XI’AN JIAOTONG UNIVERSITY (2026)
- 作者机构：
  
  1.西安交通大学能源与动力工程学院，710049，陕西西安
  2.美的集团厨房和热水事业部，528311，广东佛山
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH432;TK05
- Received：16 January 2026，
  
  Revised：2026-02-08，
  
  Accepted：15 February 2026，
- 稿件说明：
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PENG Xiaokang, MA Yanpeng, TIAN Chenye, et al. Study on Effects of Double-Arc Non-Uniform Blades on the Flow Control and Aerodynamic Performance of Multi-Blade Centrifugal Fan[J/OL]. JOURNAL OF XI’AN JIAOTONG UNIVERSITY, 2026.
DOI：

PENG Xiaokang, MA Yanpeng, TIAN Chenye, et al. Study on Effects of Double-Arc Non-Uniform Blades on the Flow Control and Aerodynamic Performance of Multi-Blade Centrifugal Fan[J/OL]. JOURNAL OF XI’AN JIAOTONG UNIVERSITY, 2026. DOI：

摘要

为提升集成灶气动性能并有效降低其气动噪声，提出一种具有较高流道设计自由度且设计变量较少的多翼离心风机叶片改型设计方法。以原型风机性能较优的双圆弧等厚叶片为对象，通过计算流体力学（CFD）与响应面方法对叶片吸力面双圆弧型线进行优化设计，将等厚度叶片重构为非等厚叶片，实现多翼离心风机内部流动控制。在工作工况下，以集成灶风量和轴功率为优化目标，采用Box-Behnken响应面方法对叶片吸力面型线的进口角、出口角、拱点圆直径以及叶片数进行优化，基于设计参数和样本结果的二次回归拟合，得到最优参数组合。实验结果表明：采用优化方案的集成灶较原型机风量增加了2.53%，噪声降低了1.8 dB。CFD流场和噪声计算的可视化分析表明：优化得到的非等厚叶片的吸力面更加符合气流的流线型设计，有效抑制了叶间流道的流动分离，减弱了叶片表面的声压脉动；同时，非等厚叶片的进、出口角与气流的进、出口气流角匹配的更好，有效降低了叶片前缘的压力脉动及叶片尾缘的尾迹流对蜗舌的非定常相互作用，从而达到了增风和降噪的目的。

Abstract

To enhance the aerodynamic performance of integrated cooking appliance and effectively reduce its aerodynamic noise

a blade modification design method with higher flow channel design freedom and fewer design variables is proposed for the multi-blade centrifugal fan used in the integrated cooking appliance. In this paper

taking the double-circular-arc uniform-thickness blades with superior performance of the prototype multi-blade centrifugal fan as the object

the suction surface of double-circular-arc blade is designed and optimized by using computational fluid dynamics (CFD) and response surface methodology. The uniform-thickness blades are reconstructed into non-uniform-thickness blades to achieve internal flow control in the multi-blade centrifugal fan. Under the working condition

the Box-Behnken response surface method is adopted to parameterize the suction surface inlet angle

outlet angle

arch point circle diameter and the number of blades

with the flow rate of the integrated cooking appliance and the shaft power as optimization objectives. The design parameters and sample results are subjected to quadratic regression fitting to obtain the optimal parameter combination. Experimental results show that compared to the prototype

the integrated cooking appliance with optimized solution has increased flow rate by 2.53% and reduced noise by 1.8 dB. Visualization analysis of CFD flow field and aerodynamic noise calculations indicate that the optimized non-uniform-thickness blade features a suction surface that better conforms to aerodynamic streamlined design

effectively suppressing flow separation in the inter-blade passages and weakening the sound pressure fluctuations on the blade surfaces. At the same time

the inlet and outlet angles of the non-uniform-thickness blade match better with the flow angles of airflow at the inlet and outlet

effectively reducing pressure fluctuations at the blade leading edge and the unsteady interaction between the blade wake flows and the volute tongue

thereby enabling the multi-blade centrifugal fan to obtain greater flow rate and lower aerodynamic noise.

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references

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