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Details of Grant 

EPSRC Reference: GR/S70340/01
Title: FARADAY: Developing a Paste Formulation Criterion
Principal Investigator: Wilson, Professor DI
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Egide UK Ltd Enthone-O M I (U K) Ltd Metal Injection Mouldings Ltd
Nestle Procter & Gamble Rolls-Royce Plc (UK)
Tenmat Ltd
Department: Chemical Engineering and Biotechnology
Organisation: University of Cambridge
Scheme: Faraday (PreFEC)
Starts: 01 October 2003 Ends: 31 March 2007 Value (£): 72,333
EPSRC Research Topic Classifications:
Complex fluids & soft solids Materials Processing
EPSRC Industrial Sector Classifications:
Manufacturing Food and Drink
Pharmaceuticals and Biotechnology Aerospace, Defence and Marine
Related Grants:
GR/S70333/01
Panel History:  
Summary on Grant Application Form
Pastes are very high volume fraction suspensions and formulation development methods are currently empirically based. This project aims to develop a formulation criterion for selecting the solids matrix for a paste assembly, with the prime concern being to avoid liquid phase migration and its attendant problems. Model pastes featuring mixtures of three solids fractions and a range of liquid phase rheologies will be studied, both in terms of flow behaviour and permeability (using a measurement cell). This information will be compared with the predictions of two numerical models: I - a lumpedparameter model of paste flow subject to phase migration, where permeability will be based on simple flow rules such as Darcy s law; II - a particulatelevel model, featuring Discrete Element Model simulation of the solids matrix and a separate fluid phase simulation (either simple Navier-Stokes or Lattice Boltzmann). The experimental and model predictions will be compared in order to develop a formulation criterion, hypothesised to be linked to the percolation velocity of the liquid through the (moving) solids bed. Later experiments will investigate more complex fluids and solids phases.
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Organisation Website: http://www.cam.ac.uk