Effect of elasticity on viscoplastic flow

M.F. Letelier, N. Díaz, D. Siginer, E. Báez

Research output: Contribution to conferencePaperpeer-review


The effect of superimposing elasticity on a viscoplastic fluid (elasto-viscoplastic fluid) is investigated through a linear combination of the simplified Phan-Thien Tanner (SPTT) model of viscoelasticity and Bingham model of viscoplastic fluid. The equation of motion is solved for the case of parallel steady flow in tubes of non-circular cross-sections. The effect of elasticity on the evolution of plug and stagnant zones, and rate of flow in terms of the Weissenberg number, a material parameter in the SPTT model, and the Bingham number is investigated. We find that elasticity tends to enhance the rate of flow for given viscoplastic conditions.
Original languageEnglish
Publication statusPublished - 2016
EventASME 2016 International Mechanical Engineering Congress and Exposition - Phoenix, United States
Duration: Nov 11 2016Nov 17 2016


ConferenceASME 2016 International Mechanical Engineering Congress and Exposition
Abbreviated titleIMECE 2016
Country/TerritoryUnited States


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