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Title: Analysis of shear forces during mash disk formation
Authors: Allwright, David
Ballu, Marin
Correia, Joaquim M C
Chakraborty, Abishek
Cuminato, José
Ewetola, Michael
Grinfeld, Michael
Hall, Cameron
Hinch, John
Lacey, Andrew
Luong, Karen
Moreton, Gavin
Ockendon, John
Purvis, Richard
Sobral, Yuri D
Costa, Rita Teixeira da
Zhou, Yang
Keywords: Mash disk
Shear forces
Mash rheology
Knife mechanics
Lubrication flow
Yield stress
Velocity profiles
Issue Date: Sep-2019
Publisher: Mathematics in Industry, European Study Groups with Industry
Citation: Report on "Analysis of shear forces during mash disk formation", Problem presented by PepsiCo R&D at the 145th European Study Group with Industry, Centre for Mathematical Sciences, University of Cambridge, Cambridge, UK, September, 2019
Abstract: This report concerns a forming process in which mash is forced from a spreading manifold into moulds on a rotating drum, transported in the moulds underneath a surface held flush with the drum (the shoe), and ejected from the moulds. The quality of the final product is understood to be related to the shear stresses experienced by the mash in the moulds as it is transported under the shoe. We describe and analyse mathematical models of the forming process, focusing on the fluid mechanics of mash in a mould. We treat this as a driven cavity flow and obtain flow profiles, stress profiles, and expressions for the maximum shear stress for different rheological models of the mash (Newtonian fluid, power-law fluid, and Bingham plastic).
Type: report
Appears in Collections:CIMA - Relatórios

Files in This Item:

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ESGI145_Problem_Booklet.pdf145th ESGI's Industrial Problems Booklet1.89 MBAdobe PDFView/Open
PepsiCoReport-Public-Final.pdfReport to PepsiCo R&D736.19 kBAdobe PDFView/Open
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