| EPSRC Reference: |
GR/R14538/01 |
| Title: |
Development of Unsteady Design Procedures For Natural Ventilation Stacks |
| Principal Investigator: |
Etheridge, Dr DW |
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| Department: |
Sch of the Built Environment |
| Organisation: |
University of Nottingham |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 October 2001 |
Ends: |
30 September 2004 |
Value (£): |
59,747
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| EPSRC Research Topic Classifications: |
| Building Ops & Management |
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| EPSRC Industrial Sector Classifications: |
| Construction |
No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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A major uncertainty in the design of naturally ventilated buildings with stacks or chimneys is the effect of the unsteady wind on the stack flow. If the stack outlets are not sited correctly, flow reversal can be induced by the wind and this reversal may become established even in the presence of buoyancy. There are no existing design methods which take account of unsteady effects for siting stacks.The overall objective is to develop two procedures which will allow the effects of unsteady wind conditions on the siting and performance of natural ventilation stacks to be taken account of in the design process (and to assess if and when steady procedures are adequate). One procedure makes use of wind tunnel modelling and is intended for buildings where the cost of wind tunnel work can be justified. The alternative procedure is simpler and makes use of nondimensional graphs derived from theoretical modelling. Both procedures include buoyancy.The underlying methodology is first to determine the effects of important parameters with simple wind tunnel models. Comparisons with theoretical predictions will also be made, using measured time records of the surface wind pressures, for both model- and full-scale situations. This will allow the experimental design procedure to be verified and any limitations to be identified. The theoretical predictions will be extended to cover the range of conditions likely to be encountered in practice. Nondimensional graphs will be produced to form the basis of a simple design procedure.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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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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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.nottingham.ac.uk |