PFG NMR and Bayesian analysis to characterise non-Newtonian fluids

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• 作者：Thomas W. Blythe^a ; Andrew J. Sederman^a ; ^{ajs40@cam.ac.uk} ; E. Hugh Stitt^b ; Andrew P.E. York^c ; Lynn F. Gladden^a
• 关键词：PFG ; NMR ; Rheology ; Bayesian analysis ; Complex fluid ; Propagator ; Yield stress ; Herschel-Bulkley
• 刊名：Journal of Magnetic Resonance
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：274
• 期：Complete
• 页码：103-114
• 全文大小：2199 K
• 卷排序：274

文摘

Rheological characterisation of Herschel-Bulkley fluid from simple PFG measurement. Bayesian model is developed to calculate rheological parameters. Simulations show robustness to low SNR data (<100) and reduced sampling. Experimental results demonstrate measurement can be achieved in <60 s. In situ measurement accounts for history-dependent shear.