Optimal Design of a Variable-Pitch Axial Flow Fan by Applying Optimization Algorithm to Design, Through-Flow Analysis and CFD Simulation Methods

Chan Lee, Jimin Choi, Jiseok Hwang, Hyeongjin Lee, Sangyeol Lee, Sang Yang

2024

Abstract

In order to develop a variable-pitch axial fan, an optimal three-dimensional fan blade is designed by using the 2-stage design optimization strategy to combine aerodynamic fan design program, CFD technique, and optimization algorithm. At the 1 st stage of fan design optimization, the aerodynamic fan design program of this study is the FANDAS code where the chord length, setting angle, and camber angle of the fan blade are considered as design variables, and the performance, efficiency, and power of the fan are predicted by applying the through-flow analysis method to the designed fan. By applying a optimization algorithm to the FANDAS program, a three-dimensional fan blade shape is optimized and constructed for maximizing fan efficiency. At the 2 nd stage of fan design optimization, CFD analysis method is also applied on the optimized fan from the first design optimization study, and additional design optimization for the blade setting angles is conducted by applying an optimization algorithm to the CFD model and simulation results. Furthermore the total pressure, efficiency, and power characteristic curves of the fan according to the variable-pitch operation conditions are calculated by applying the CFD technique to the final optimal fan model obtained through the 2-stage design optimization processes. From the CFD results on the characteristic curves of optimal fan, it is found that the optimal fan model of this study shows the highest efficiency of 91% at the design point, maintains high efficiency level of 80% in a wide flow range through variable-pitch operation.

Paper Citation

in Harvard Style

Lee C., Choi J., Hwang J., Lee H., Lee S. and Yang S. (2024). Optimal Design of a Variable-Pitch Axial Flow Fan by Applying Optimization Algorithm to Design, Through-Flow Analysis and CFD Simulation Methods. In Proceedings of the 14th International Conference on Simulation and Modeling Methodologies, Technologies and Applications - Volume 1: SIMULTECH; ISBN 978-989-758-708-5, SciTePress, pages 363-369. DOI: 10.5220/0012798200003758

in Bibtex Style

@conference{simultech24,
author={Chan Lee and Jimin Choi and Jiseok Hwang and Hyeongjin Lee and Sangyeol Lee and Sang Yang},
title={Optimal Design of a Variable-Pitch Axial Flow Fan by Applying Optimization Algorithm to Design, Through-Flow Analysis and CFD Simulation Methods},
booktitle={Proceedings of the 14th International Conference on Simulation and Modeling Methodologies, Technologies and Applications - Volume 1: SIMULTECH},
year={2024},
pages={363-369},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0012798200003758},
isbn={978-989-758-708-5},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 14th International Conference on Simulation and Modeling Methodologies, Technologies and Applications - Volume 1: SIMULTECH
TI - Optimal Design of a Variable-Pitch Axial Flow Fan by Applying Optimization Algorithm to Design, Through-Flow Analysis and CFD Simulation Methods
SN - 978-989-758-708-5
AU - Lee C.
AU - Choi J.
AU - Hwang J.
AU - Lee H.
AU - Lee S.
AU - Yang S.
PY - 2024
SP - 363
EP - 369
DO - 10.5220/0012798200003758
PB - SciTePress