Effect of inlet pre-whirl on two-dimensional lobed mixer performance

3rd International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

Lei, Hongwei^1 ; Fan, Weijun^1 ; Zhang, Rongchun^1 ; Wu, Jingyi^1 ; Zhang, Yingbo^1 ; Xu, Hanqing^1

National Key Laboratory of Science and Technology on Aero-Engines Aero-Thermodynamics, School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing

100191, China^1

关键词: Mixing efficiency;    Mixing performance;    Rapid mixing;    Streamwise vortices;    Total-pressure loss;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/113/1/012118/pdf
DOI  :  10.1088/1755-1315/113/1/012118

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The temperature field downstream the lobed mixer under different pre-whirl conditions was studied by numerical method. The influence of pre-whirl on the mixing performance and total pressure loss was summarized. The results show that large-scale streamwise vortices generated by the lobe structure are the key to the rapid mixing of core and bypass airflow. The inlet pre-whirl will strengthen the interaction between streamwise vortices, thus accelerating the mixing of core and bypass airflow. The mixing efficiency and total pressure loss of the lobed mixer increase with the inlet pre-whirl.