Chen Jihe, Yang Bin, Jiang Zhong-An, Wang Yapeng
School of Civil and Resource Engineering, University of Science and Technology Beijing, No. 30 Xueyuan Road, Haidian District, Beijing 100083, China.
China Academy of Safety Science and Technology, No. 17, Huixin West Street, Chaoyang District, Beijing 100029, China.
ACS Omega. 2019 Aug 7;4(8):13603-13616. doi: 10.1021/acsomega.9b02216. eCollection 2019 Aug 20.
As a widely used separation device, a cyclone separator is especially important to improve its separation efficiency. In this paper, a new two-stage cyclone separator is designed and modeled by the Reynolds stress model. Under the premise of determining the diameter of the second-stage cyclone (D), the effects of five first-stage cyclone diameters (Du) on the performance of the two-stage cyclone are simulated. The performance of the single-stage cyclone separator is also obtained. The results show that Du has significant effects on the internal pressure field, flow field, and vortex core of the two-stage cyclone. Compared with the single-stage cyclone separator, the separation efficiency of the two-stage cyclone separator is significantly improved. When Du = 6D, the separation efficiency is improved by 15.5% compared with that of the single-stage cyclone. In addition, the two-stage cyclone separator can effectively reduce the Euler number.
作为一种广泛应用的分离装置，旋风分离器对于提高其分离效率尤为重要。本文采用雷诺应力模型设计并模拟了一种新型两级旋风分离器。在确定二级旋风分离器直径（D）的前提下，模拟了五种一级旋风分离器直径（Du）对两级旋风分离器性能的影响。同时也获得了单级旋风分离器的性能。结果表明，Du对两级旋风分离器的内部压力场、流场和涡核有显著影响。与单级旋风分离器相比，两级旋风分离器的分离效率显著提高。当Du = 6D时，与单级旋风分离器相比，分离效率提高了15.5%。此外，两级旋风分离器能有效降低欧拉数。
