Uncertainty quantification and global sensitivity analysis of mechanistic one-dimensional models and flow pattern transition boundaries predictions for two-phase pipe flows

详细信息    查看全文

• 作者：Davide Picchi ; ¹ ; ^{davide.picchi@gmail.com} ; Pietro Poesio ^{pietro.poesio@unibs.it}
• 关键词：Uncertainty quantification ; Sobol&rsquo ; s indices ; Two-fluid model ; Confidence level ; Pressure drop ; Flow pattern transition
• 刊名：International Journal of Multiphase Flow
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：90
• 期：Complete
• 页码：64-78
• 全文大小：2473 K
• 卷排序：90

文摘

A method to rigorously quantify the confidence of 1D-TFM predictions is proposed. The global sensitivity indices (Sobol’s) are computed for 1D-TFM predictions. UQ and GSA are performed on hold-up, pressure drop, stability boundary predictions. The most dangerous input parameters in terms of uncertainty are identified. Practical gas/liquid and liquid/liquid cases are discussed.