Title: The design of two-stage gas and liquid cylindrical cyclone and numerical simulation of internal flow field characteristics

Authors: Zhaoming Yang; Jianlei Chen; Yunrui Han; Limin He; Xiaoming Luo

Addresses: College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, Shandong, 266580, China ' Sinopec Petroleum Engineering Corporation, Dongying, Shandong, 257026, China ' College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, Shandong, 266580, China ' Shandong Provincial Key Laboratory of Oil and Gas Storage and Transportation Security, College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, Shandong, 266580, China ' College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, Shandong, 266580, China

Abstract: In underwater gas fields, the ratio of gas phase and liquid phase has become higher and higher. Focusing on the special condition above, the design of a new kind of two-stage gas and liquid cylindrical cyclone (GLCC) has been proposed which is different from the traditional one with rectangle inlet. The equivalent volume transforming method has been used in the design of size. Based on the research of the liquid drops breaking in swirl field, a new test method of GLCC diameter has been proposed, according to Navier-Stokes equations. For the structure of this cyclone separator, the optimised numerical simulation has been used to study the internal flow field, which adopts better turbulence models, meshing schemes and discrete formats after comparison. The effects of parameters such as H and Dc on the asymmetric characteristics and vortex-core boundary have also been obtained and analysed. [Received: February 12, 2018; Accepted: May 21, 2018]

Keywords: cyclone separator; numerical simulation; asymmetry characteristics; vortex-core boundary; gas-liquid cylindrical cyclone; GLCC; flow field characteristics; undersea separator; gas-liquid separation; oil-gas technology.

DOI: 10.1504/IJOGCT.2020.106149

International Journal of Oil, Gas and Coal Technology, 2020 Vol.23 No.4, pp.474 - 503

Received: 12 Feb 2018
Accepted: 21 May 2018

Published online: 24 Mar 2020 *

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