Affiliation:
1. College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China
2. Institute of Innovation Research of Shengzhou, Zhejiang University of Technology, Shengzhou 312400, China
Abstract
Considering the complex flow state of the duct flow field in the exhaust system, the structural parameters can significantly impact the internal flow field and noise. This paper takes the noise generated by the duct system under operating conditions as the research object, studies the mechanism of duct noise generation through theoretical analysis, numerical simulation and experimental test, and proposes an optimization design method, that is, to improve the duct structure by adding duct guide vanes. In order to maximize the optimization effect of the guide vane, a multiobjective optimization design of its profile is required, including the parametric expression of the guide vane profile, establishing the design variables and optimization objectives, and establishing the Kriging approximation model. The IMOCS algorithm is used to accurately and efficiently calculate the Pareto front solution to obtain the optimal profile of the duct guide vane and finally improve the noise-reduction performance of the duct system. This paper applies this design method to an integrated stove head duct to verify its accuracy, and prototype tests are conducted according to the optimization results. The test results show that the optimized integrated cooker has improved the outlet flow rate of the whole machine by 1.2 m3/min and reduced the noise by 2.3 dB.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Zhejiang Province
Subject
Electrical and Electronic Engineering,Industrial and Manufacturing Engineering,Control and Optimization,Mechanical Engineering,Computer Science (miscellaneous),Control and Systems Engineering
Reference22 articles.
1. A study of air flow characteristics in the refrigerator using PIV and computational simulation;Lee;Flow Vis. Image Process,1999
2. CFD simulation-based optimization of refrigerator air ducts;Zhao;Appl. Technol.,2022
3. An experimental study of the noise and the performance of cross-flow fans in room air-conditioning systems;Koo;Noise Control. Eng. J.,2000
4. Performance optimization study of internal duct system for range hoods;Liu;J. Eng. Thermophys.,2018
5. Wang, D., Yu, W., Zhang, Y., Chen, J., and Gao, S. (2019). Exploration of new noise-reducing air ducts for range hoods and their optimal parameters. Dly. Appl., 24–28.