Modelling of breakup processes in transient Diesel fuel sprays

Completed

Energy Efficiency(Transport)
Not Energy Related
Fossil Fuels: Oil Gas and Coal(Oil and Gas, Oil and gas combustion)

Basic and strategic applied research

PHYSICAL SCIENCES AND MATHEMATICS (Physics)
ENGINEERING AND TECHNOLOGY (Mechanical, Aeronautical and Manufacturing Engineering)

Not Cross-cutting

Professor S Sazhin
Sch of Engineering
University of Brighton

Standard

EPSRC

01 February 2009

30 June 2012

41 months

£268,768

Mechanical engineering

South East

Energy : Engineering

Professor S Sazhin, Sch of Engineering, University of Brighton

Dr C Crua, Sch of Engineering, University of Brighton
Professor M Heikal, Sch of Engineering, University of Brighton

Project Contact, Ricardo Consulting Engineers Ltd

Linked to grant EP/G000034/1

This proposal is concerned with the development of new mathematical models for transient Diesel fuel jets, taking into account their instabilities and acceleration, in a form suitable for implementation into computational fluid dynamics (CFD) codes. The distinction between convective, absolute and global instabilities and the effects of cavitation on the formation of Diesel fuel sprays will be taken into account. The latter effects are expected to appear via the modification of the boundaryconditions for jets at the exit of the nozzle. Effects of boundary disturbances on the breakup of the jet will be studied experiementally using a three dimensional laser vibrometer. The jet acceleration is expected to lead to partial stabilisation of the jet. The effects of jet acceleration and jet instabilities will be used to develop a new stochastic model for the primary spray breakup in a form suitable for implementation into CFD codes. This stochastic model will be implemented into a customised in-house version of the KIVA-2 CFD code. This code will be used for modelling fluid dynamics, heat transfer and combustion processes in Diesel engines. The results of the modelling will be validated against in-house experimental data. This will open the way to implement new models to other CFD codes, including commercial ones

28/05/08