Verification and validation of large eddy simulation with Nek5000 for cold leg mixing benchmark
作者: Jonathan K. LaiElia MerzariYassin A. HassanPaul FischerOana Marin
作者单位: 1Texas A&M University, United States
2Argonne National Laboratory, United States
刊名: Nuclear Engineering and Design, 2020, Vol.358
来源数据库: Elsevier Journal
DOI: 10.1016/j.nucengdes.2019.110427
英文摘要: Abstract(#br)Large eddy simulation (LES) of an experimental benchmark investigating buoyant mixing among two fluids is developed for verification and validation. Flow physics involve a completely closed system where after a valve is opened, two initially stationary fluids with different densities are allowed to mix. The Boussinesq approximation and low-Mach equations are coded into spectral element code Nek5000 to predict the buoyancy forces, and miscibility is accounted for using the advection-diffusion equation for concentration. Due to computational costs of higher order solutions, current analysis consists of initial flow development after the valve is opened. Minor differences between the models and Schmidt number are found within the turbulent spectrum and time integrated...
全文获取路径: Elsevier  (合作)
影响因子:0.805 (2012)

  • benchmark 基准点
  • validation 证实
  • large 大的
  • mixing 混合
  • simulation 模拟