Limitation on the use of the retarded motion expansion

Ole Hassager, RC Armstrong, RB Bird

Research output: Contribution to journalJournal articleResearchpeer-review


The use of the retarded motion expansion as a constitutive equation has long been known to be valid only for small Deborah number flow. We demonstrate that ‘solution’ which cannot be obtained as a regular perturbation about the Newtonian solution is physically meaningless. This is discussed in connection with a recent paper in this journal.
Original languageEnglish
JournalJournal of Non-Newtonian Fluid Mechanics
Issue number2
Pages (from-to)241-245
Publication statusPublished - 1990
Externally publishedYes


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