| EPSRC Reference: |
GR/K95949/01 |
| Title: |
TAILORED DIESEL SPRAYS:NOZZLE GEOMETRY EFFECT ON SPRAY PATTERNATION,BREAK-UP,VAPORIZATION & WALL-INTERACTION |
| Principal Investigator: |
Yule, Professor A |
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| Department: |
Mechanical, Aerospace & Manufac Eng |
| Organisation: |
UMIST |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 September 1996 |
Ends: |
29 February 2000 |
Value (£): |
128,280
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Summary on Grant Application Form |
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Fuel spray combustion systems are generally designed to use axisymmetric sprays, even though these do not always provide an ideal geometrical match with the combustion chamber shape and gas flow pattern (gas turbines, furnaces etc). It is proposed that for any particular combustion system, there is a spray patternisation that may be neither homogeneous nor axisymmetric, but which gives an optimum match with the combustion chamber with respect to ignition, combustion, heat transfer etc. The methods and effects of changing spray patternation will vary according to the atomiser type and this general approach will be tested for the cases of pulsed, high pressure sprays similar to this for direct injection diesel engines, for which there are already indications that the approach should be successful. For these the break up zone also influences engine performance and break-up, spray patternisation and symmetry are affected by the internal nozzle flow via turbulence, separation and caviation. The dependency of spray structure on nozzle flow will be investigated using modified nozzle designs and realistic boundary conditions with PDA, high speed video, break-up detection instruments, and CFD models of spray development and internal nozzle flow. Large scale models of nozzles will be used to determine the internal nozzle flows. The tailoring of sprays to give combination of penetration asymmetry and premixed-prevaporised zones for ignition will be studied.
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Key Findings |
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Potential use in non-academic contexts |
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Impacts |
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| Description |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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