| EPSRC Reference: |
GR/K88361/01 |
| Title: |
CHARACTERISATION OF TIME-DEPENDENT FLOW PHENOMENA IN AGITATED VESSELS |
| Principal Investigator: |
Yianneskis, Professor M |
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| Department: |
Mechanical Engineering |
| Organisation: |
Kings College London |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
15 December 1997 |
Ends: |
14 March 2001 |
Value (£): |
130,092
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Summary on Grant Application Form |
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Stirred tanks are widely used throughout the process industries for the mixing of fluids. Fluid motion is fundamental to all aspects of process performance because of its profound influence on the blending, transport and reaction phenomena and, consequently, on power consumption and operating efficiency. This proposal is concerned with the instabilities in the flow structures which can directly affect not only the mixing and process dynamics but also power fluctuations and mechanical vibrations and thus the integrity of industrial mixing equipment. It is, therefore, essential that unsteady flow phenomena is stirred tanks are investigated. Measurements of the velocity characteristics with LDA techniques are well established. However, such measurements are time-consuming, while laser-sheet visualisation techniques employed at present can only provide information on 2-D flow patterns in a plane. It is, therefore, proposed to develop further a 3-D flow visualisation technique which has undergone preliminary testing at King's College to enable 3-D velocity information to be acquired. LDA will also be employed to study the flows to validate the 3-D technique. In the proposed programme the flows produced by axial flow impellers will be investigated. The objectives of the work are to develop a 3-D visualisation technique and to use this technique together with LDA to study flow instabilities and the effect of operating conditions and system parameters on these, so as to provide a physical understanding of the nature of such instabilities, accurate data for the development of CFD codes and guidelines for system design and operation.
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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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