A numerical investigation of the mechanism of air-injection drag reduction
作者: Xiaojie ZhaoZhi ZongYichen JiangTiezhi Sun
作者单位: 1School of Shipbuilding Engineering, Dalian University of Technology, #2 Linggong Road, Dalian 116024, China
2State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian, China
3Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai, China
4Liaoning Engineering Laboratory for Deep-Sea Floating Structures, Dalian, China
刊名: Applied Ocean Research, 2020, Vol.94
来源数据库: Elsevier Journal
DOI: 10.1016/j.apor.2019.101978
关键词: Air injectionDrag reductionAxisymmetric bodyNumerical simulationsEulerian-Eulerian two-fluid modelVOF model
原始语种摘要: Abstract(#br)In order to investigate the mechanism of air-injection drag reduction, two different CFD models in OpenFOAM including the Eulerian-Eulerian two-fluid model and VOF model have been applied to study the there-dimensional drag reduction of an axisymmetric body by air injection. The calculated drag reduction rates obtained from the two models are compared against the experimental measurements. It is found that the numerical results from these two models agree well with the experimental data in two kinds of drag reduction regions: microbubble drag reduction (MBDR or BDR) region and air layer drag reduction (ALDR) region. For the transition region between BDR and ALDR, the data-coupling method based on the air flow ratio is proposed to calculate the drag reduction rates and the...
全文获取路径: Elsevier  (合作)
影响因子:1.072 (2012)

  • reduction 减少
  • injection 贯入
  • bubble 磁泡
  • numerical 数字的
  • ratio 
  • around 环绕
  • region 地域
  • mechanism 机构
  • rates 地方税
  • investigate