• norsk
    • English
  • English 
    • norsk
    • English
  • Login
View Item 
  •   Home
  • Universitetet i Stavanger
  • Faculty of Science and Technology
  • Department of Mathematics and Physics (TN-IMF)
  • Studentoppgaver (TN-IMF)
  • View Item
  •   Home
  • Universitetet i Stavanger
  • Faculty of Science and Technology
  • Department of Mathematics and Physics (TN-IMF)
  • Studentoppgaver (TN-IMF)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Describing mechanical degradation in polymer solution using the FENE-P bead-spring-chain non-Newtonian fluid model.

Subedi, Ramesh
Master thesis
Thumbnail
View/Open
masterthesisramesh.pdf (1.010Mb)
URI
http://hdl.handle.net/11250/2623949
Date
2019-06
Metadata
Show full item record
Collections
  • Studentoppgaver (TN-IMF) [52]
Abstract
Polymer solutions are non-Newtonian fluids used in enhanced oil recovery due to their specific properties: Adding high-molecular-weight polymers to injected water significantly increases the apparent viscosity of the latter, which leads to improved sweep efficiency and allows to recover more oil from a reservoir.

Under certain flow conditions, polymer molecules can undergo mechanical degradation: rupture of polymer chains under large stresses. This effect is undesirable, since the polymer solution gradually loses its important properties when it degrades.

Although the impact of degradation on shear viscosity is well understood from experiments, it is not clear how degradation affects the polymer behavior in complex flows, when non-trivial geometries and time-dependent effects are involved.

The first step to understanding of the role of mechanical degradation can play in complex flows is realizing how it affects different material functions,describing the polymer dynamics at various flow regimes. To do that, use of the differential tensor FENE-P Bead-Spring-Chain model of polymeric liquids, based on kinetic theory plays important role. In this model, each polymer molecule is represented by a very long linear chain consisting of identical spherical beads connected by non linear springs. Mechanical degradation i.e.rupture of polymeric chains, can therefore be described by a simultaneous change in bead number and number density of polymer molecules. For this a simple degradation scheme is considered which is gradual erosion from the ends. The material functions for FENE-P Bead-Spring-Chain model are derived and scaled plots, through which the impact of degradation on the material functions including viscosity can be studied, are made.
Description
Master's thesis in Mathematics and physics
Publisher
University of Stavanger, Norway
Series
Masteroppgave/UIS-TN-IMF/2019;

Contact Us | Send Feedback

Privacy policy
DSpace software copyright © 2002-2019  DuraSpace

Service from  Unit
 

 

Browse

ArchiveCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsDocument TypesJournalsThis CollectionBy Issue DateAuthorsTitlesSubjectsDocument TypesJournals

My Account

Login

Statistics

View Usage Statistics

Contact Us | Send Feedback

Privacy policy
DSpace software copyright © 2002-2019  DuraSpace

Service from  Unit