NDLI: Numerical study of the combined effects of inertia, slip, and compressibility in extrusion of yield stress fluids

Content Provider	Springer Nature Link
Author	Kountouriotis, Zacharias Georgiou, Georgios C. Mitsoulis, Evan
Copyright Year	2014
Abstract	The axisymmetric extrudate swell flow of a compressible Herschel–Bulkley fluid with wall slip is solved numerically. The Papanastasiou-regularized version of the constitutive equation is employed, together with a linear equation of state relating the density of the fluid to the pressure. Wall slip is assumed to obey Navier’s slip law. The combined effects of yield stress, inertia, slip, and compressibility on the extrudate shape and the extrudate swell ratio are analyzed for representative values of the power-law exponent. When the Reynolds number is zero or low, swelling is reduced with the yield stress and eventually the extrudate contracts so that the extrudate swell ratio reaches a minimum beyond which it starts increasing asymptotically to unity. Slip suppresses both swelling and contraction in this regime. For moderate Reynolds numbers, the extrudate may exhibit necking and the extrudate swell ratio initially increases with yield stress reaching a maximum; then, it decreases till a minimum corresponding to contraction, and finally, it converges asymptotically to unity. In this regime, slip tends to eliminate necking and may initially cause further swelling of the extrudate, which is suppressed if slip becomes stronger. Compressibility was found to slightly increase swelling, this effect being more pronounced for moderate yield stress values and wall slip.
Starting Page	791
Ending Page	804
Page Count	14
File Format	PDF
ISSN	00354511
Journal	Rheologica Acta
Volume Number	53
Issue Number	10-11
e-ISSN	14351528
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-10-08
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Herschel–Bulkley fluids Yield stress Extrusion Extrudate swell Reynolds number Navier slip Compressibility Characterization and Evaluation of Materials Polymer Sciences Soft and Granular Matter, Complex Fluids and Microfluidics Mechanical Engineering Food Science
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Condensed Matter Physics Materials Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Rheo-PIV of a yield-stress fluid in a capillary with slip at the wall

Analysis on creeping channel flows of compressible fluids subject to wall slip

Flow of soft solids squeezed between planar and spherical surfaces

Confined viscoplastic flows with heterogeneous wall slip

Numerical simulations of complex yield-stress fluid flows

Progress in numerical simulation of yield stress fluid flows

Numerical prediction of extrudate swell of branched polymer melts

Slip yield stress effects in start-up Newtonian Poiseuille flows

Numerical simulation of the extrusion of strongly compressible Newtonian liquids

Numerical study of the combined effects of inertia, slip, and compressibility in extrusion of yield stress fluids

Similar Documents

Rheo-PIV of a yield-stress fluid in a capillary with slip at the wall

Analysis on creeping channel flows of compressible fluids subject to wall slip

Flow of soft solids squeezed between planar and spherical surfaces

Confined viscoplastic flows with heterogeneous wall slip

Numerical simulations of complex yield-stress fluid flows

Progress in numerical simulation of yield stress fluid flows

Numerical prediction of extrudate swell of branched polymer melts

Slip yield stress effects in start-up Newtonian Poiseuille flows

Numerical simulation of the extrusion of strongly compressible Newtonian liquids

Numerical study of the combined effects of inertia, slip, and compressibility in extrusion of yield stress fluids