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.
|Publication status||Published - 2016|
|Event||ASME 2016 International Mechanical Engineering Congress and Exposition - Phoenix, United States|
Duration: Nov 11 2016 → Nov 17 2016
|Conference||ASME 2016 International Mechanical Engineering Congress and Exposition|
|Abbreviated title||IMECE 2016|
|Period||11/11/16 → 11/17/16|
Letelier, M. F., Díaz, N., Siginer, D., & Báez, E. (2016). Effect of elasticity on viscoplastic flow. Paper presented at ASME 2016 International Mechanical Engineering Congress and Exposition, Phoenix, United States. https://www.scopus.com/inward/record.uri?eid=2-s2.0-85021635243&doi=10.1115%2fIMECE201665025&partnerID=40&md5=553d37b0ef22c519ffed12838de334ed