Adaptive Optimization of Control Points for Forward Design of Screw Rotor Profile

高宗; 何雪明; 孙维杰

doi:10.13433/j.cnki.1003-8728.20230339

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Adaptive Optimization of Control Points for Forward Design of Screw Rotor Profile

更新时间：2026-04-23

- Adaptive Optimization of Control Points for Forward Design of Screw Rotor Profile
- Mechanical Science and Technology for Aerospace Engineering Vol. 44, Issue 10, Pages: 1713-1720(2025)
- 作者机构：
  
  1. 江苏省食品先进制造装备技术重点实验室机构,江苏,无锡,214122
  2. 江南大学机械工程学院,江苏,无锡,214122
- 作者简介：
- 基金信息：
- DOI：10.13433/j.cnki.1003-8728.20230339
  CLC：
- Published：2025
- 稿件说明：
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高宗, 何雪明, 孙维杰. Adaptive Optimization of Control Points for Forward Design of Screw Rotor Profile[J]. Mechanical Science and Technology for Aerospace Engineering, 2025, 44(10): 1713-1720.
DOI：

高宗, 何雪明, 孙维杰. Adaptive Optimization of Control Points for Forward Design of Screw Rotor Profile[J]. Mechanical Science and Technology for Aerospace Engineering, 2025, 44(10): 1713-1720. DOI： 10.13433/j.cnki.1003-8728.20230339.

摘要

为解决转子型线设计开发困难和型线性能较差问题，提高转子型线设计效率，本文从转子型线的正向设计展开研究。运用NURBS理论和最小二乘法求解型线控制点，利用综合性能指标和坐标轮换法对控制点进行自适应优化，将原始型线和优化型线的性能参数进行对比，并对优化前后的转子进行流体仿真。结果表明: 在进行控制点自适应优化后，转子型线性能参数中接触线长度有所减少、泄漏三角形面积有所变小和面积利用系数略微变大，双螺杆压缩机的出口压力提高，其密封性能得到提升，说明了控制点自适应优化效果。

Abstract

In order to solve the difficulty of rotor profile design & development and the poor performance of rotor profile

and improve the efficiency of rotor profile design

the forward design of rotor profile is studied in this paper. The control points of rotor profile are solved with NURBS theory and least square method

the control points are adaptively optimized according to the comprehensive performance index and coordinate rotation method. The performance parameters of the original profile and the optimized profile are compared

and the fluid simulation of rotor before and after optimization is carried out. The results show that after adaptive optimization of control point

the length of contact line

the area of leakage triangle and the area utilization coefficient of the rotor profile are reduced

the outlet pressure of the twin-screw compressor is increased

and the sealing performance is improved

which indicates the adaptive optimization effect of control point.

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