Bifurcation phenomenon of inertial viscoelastic flow through gradual expansions

Verfasser / Beitragende:
[Mahmood Norouzi, Mohammad Shahmardan, Amin Shahbani Zahiri]
Ort, Verlag, Jahr:
2015
Enthalten in:
Rheologica Acta, 54/5(2015-05-01), 423-435
Format:
Artikel (online)
ID: 60546670X
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024 7 0 |a 10.1007/s00397-015-0841-3  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00397-015-0841-3 
245 0 0 |a Bifurcation phenomenon of inertial viscoelastic flow through gradual expansions  |h [Elektronische Daten]  |c [Mahmood Norouzi, Mohammad Shahmardan, Amin Shahbani Zahiri] 
520 3 |a In this paper, viscoelastic fluid flows in planar gradual expansions are studied numerically for the first time. Expansion ratio is considered to be 1:3, and exponential Phan Thien-Tanner (EPTT) model is used as the constitutive equation. The investigation is carried out based on a numerical approach using finite volume method (FVM) and Pressure Implicit with Splitting of Operator (PISO) algorithm. Three angles of 30, 45, and 60° are selected to clarify the effects of gradual expansion angles. Combined effects of dynamics and rheological parameters on bifurcation phenomenon are investigated in detail. An analysis is conducted to elucidate the influences of Reynolds and Weissenberg numbers on the dynamics, shapes, length, and intensity of vortices in stable and unstable situations. The results proved that an increment in expansion angles destabilizes the flow regime. 
540 |a Springer-Verlag Berlin Heidelberg, 2015 
690 7 |a Gradual expansion  |2 nationallicence 
690 7 |a Expansion angle  |2 nationallicence 
690 7 |a Asymmetric flow  |2 nationallicence 
690 7 |a Coanda effect  |2 nationallicence 
690 7 |a Polymeric fluid  |2 nationallicence 
690 7 |a EPTT model  |2 nationallicence 
700 1 |a Norouzi  |D Mahmood  |u Department of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran  |4 aut 
700 1 |a Shahmardan  |D Mohammad  |u Department of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran  |4 aut 
700 1 |a Shahbani Zahiri  |D Amin  |u Department of Mechanical Engineering, University of Birjand, Birjand, Iran  |4 aut 
773 0 |t Rheologica Acta  |d Springer Berlin Heidelberg  |g 54/5(2015-05-01), 423-435  |x 0035-4511  |q 54:5<423  |1 2015  |2 54  |o 397 
856 4 0 |u https://doi.org/10.1007/s00397-015-0841-3  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00397-015-0841-3  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Norouzi  |D Mahmood  |u Department of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Shahmardan  |D Mohammad  |u Department of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Shahbani Zahiri  |D Amin  |u Department of Mechanical Engineering, University of Birjand, Birjand, Iran  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Rheologica Acta  |d Springer Berlin Heidelberg  |g 54/5(2015-05-01), 423-435  |x 0035-4511  |q 54:5<423  |1 2015  |2 54  |o 397