A numerical approach for non-Newtonian two-phase flows using a conservative level-set method
作者: Ahmad AmaniNéstor BalcázarAlireza NaseriJoaquim Rigola
作者单位: 1Heat and Mass Transfer Technological Center (CTTC), Universitat Politécnica de Catalunya-Barcelona Tech (UPC), ESEIAAT, Colom 11, 08222 Terrassa (Barcelona), Spain
2Termo Fluids S.L. Avda Jacquard 97 1-E, 08222 Terrassa (Barcelona), Spain
刊名: Chemical Engineering Journal, 2020, Vol.385
来源数据库: Elsevier Journal
DOI: 10.1016/j.cej.2019.123896
关键词: Non-Newtonian multiphase flowConservative level-set methodViscoelastic fluidsShear-thickeningShear-thinning
英文摘要: Abstract(#br)A finite-volume based conservative level-set method is presented to numerically solve the non-Newtonian multiphase flow problems. One set of governing equations is written for the whole domain, and different phases are treated with variable material and rheological properties. Main challenging areas of numerical simulation of multiphase non-Newtonian fluids, including tracking of the interface, mass conservation of the phases, small timestep problems encountered by non-Newtonian fluids, numerical instabilities regarding the high Weissenberg Number Problem (HWNP), instabilities encouraged by low solvent to polymer viscosity ratio in viscoelastic fluids and instabilities encountered by surface tensions are addressed and proper numerical treatments are provided in the proposed...
全文获取路径: Elsevier  (合作)
影响因子:3.473 (2012)

  • thinning 狭缩
  • level 水准
  • conservative 保守
  • phase 相位
  • numerical 数字的
  • method 方法
  • thickening 浓缩
  • approach