A rheological characterization of high percent solids kraft black liquor

Christian L. Sanders, Sayavur I. Bakhtiyarov, Dennis A. Siginer

Research output: Contribution to journalArticlepeer-review


Tube flow elastic recovery is employed to measure the normal stresses of an experimental liquid, polyacrylamide, and an industrial liquid, kraft black liquor. It is shown that the elastic recovery provides a reasonable method to measure normal stresses where the conditions of interest are difficult to reproduce in standard measurement techniques. Tube flow elastic recovery assumptions are tested for the liquids under study. New normal stress measurement data is presented for the kraft black liquor and it is shown to be a function of shear rate and temperature.

Original languageEnglish
Pages (from-to)137-144
Number of pages8
JournalAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
Publication statusPublished - Dec 1 1998

All Science Journal Classification (ASJC) codes

  • General Engineering


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