Linear stability Analysis of Viscoelastic Flows
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Linjär stabilitet-analys av viskoelastiska flöden (Swedish)
The goal of present work is to investigate the instability of jet ow, mixing layer and Poiseuille ow of viscoelastic uids. According to Boeta et al: , small elastic eect in Kolmogorov ow will result in increasing critical Re for hydrodynamic instability, however, at high elasticity a new instability of elastic nature occurs even at vanishing Re. This thesis aims to test this result in jet and mixing layer. In addition, linear stability analysis (modal and non-modal) of viscoelastic Poiseuille ow is carried out to understand the elastic eects on the ows of both Oldroyd-B and FENE-P model uids. Energy analysis is used to reveal the instability mechanism.
Place, publisher, year, edition, pages
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-95137OAI: oai:DiVA.org:kth-95137DiVA: diva2:526641
Brandt, Luca, Professor