The Mechanical Impact of Aerodynamic Stall on Tunnel Ventilation Fans
This paper describes work aimed at establishing the ability of a tunnel ventilation fan to operate without risk of mechanical failure in the event of aerodynamic stall. The research establishes the aerodynamic characteristics of a typical tunnel ventilation fan when operated in both stable and stall...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2012-01-01
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| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/2012/402763 |
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| _version_ | 1832557082604208128 |
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| author | A. G. Sheard A. Corsini |
| author_facet | A. G. Sheard A. Corsini |
| author_sort | A. G. Sheard |
| collection | DOAJ |
| description | This paper describes work aimed at establishing the ability of a tunnel ventilation fan to operate without risk of mechanical failure in the event of aerodynamic stall. The research establishes the aerodynamic characteristics of a typical tunnel ventilation fan when operated in both stable and stalled aerodynamic conditions, with and without an anti-stall stabilisation ring, with and without a “nonstalling” blade angle and at full, half, and one quarter design speed. It also measures the fan’s peak stress, thus facilitating an analysis of the implications of the experimental results for mechanical design methodology. The paper concludes by presenting three different strategies for tunnel ventilation fan selection in applications where the selected fan will most likely stall. The first strategy selects a fan with a low-blade angle that is nonstalling. The second strategy selects a fan with a high-pressure developing capability. The third strategy selects a fan with a fitted stabilisation ring. Tunnel ventilation system designers each have their favoured fan selection strategy. However, all three strategies can produce system designs within which a tunnel ventilation fan performs reliably in-service. The paper considers the advantages and disadvantages of each selection strategy and considered the strengths and weaknesses of each. |
| format | Article |
| id | doaj-art-2e7f07bec40240038fb97ead72d10246 |
| institution | Kabale University |
| issn | 1023-621X 1542-3034 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-2e7f07bec40240038fb97ead72d102462025-02-03T05:43:32ZengWileyInternational Journal of Rotating Machinery1023-621X1542-30342012-01-01201210.1155/2012/402763402763The Mechanical Impact of Aerodynamic Stall on Tunnel Ventilation FansA. G. Sheard0A. Corsini1Fläkt Woods Ltd., Axial Way, Colchester CO4 5ZD, UKDipartimento di Ingegneria Meccanica e Aerospaziale, Sapienza University of Rome, Via Eudossiana 18, Rome 00184, ItalyThis paper describes work aimed at establishing the ability of a tunnel ventilation fan to operate without risk of mechanical failure in the event of aerodynamic stall. The research establishes the aerodynamic characteristics of a typical tunnel ventilation fan when operated in both stable and stalled aerodynamic conditions, with and without an anti-stall stabilisation ring, with and without a “nonstalling” blade angle and at full, half, and one quarter design speed. It also measures the fan’s peak stress, thus facilitating an analysis of the implications of the experimental results for mechanical design methodology. The paper concludes by presenting three different strategies for tunnel ventilation fan selection in applications where the selected fan will most likely stall. The first strategy selects a fan with a low-blade angle that is nonstalling. The second strategy selects a fan with a high-pressure developing capability. The third strategy selects a fan with a fitted stabilisation ring. Tunnel ventilation system designers each have their favoured fan selection strategy. However, all three strategies can produce system designs within which a tunnel ventilation fan performs reliably in-service. The paper considers the advantages and disadvantages of each selection strategy and considered the strengths and weaknesses of each.http://dx.doi.org/10.1155/2012/402763 |
| spellingShingle | A. G. Sheard A. Corsini The Mechanical Impact of Aerodynamic Stall on Tunnel Ventilation Fans International Journal of Rotating Machinery |
| title | The Mechanical Impact of Aerodynamic Stall on Tunnel Ventilation Fans |
| title_full | The Mechanical Impact of Aerodynamic Stall on Tunnel Ventilation Fans |
| title_fullStr | The Mechanical Impact of Aerodynamic Stall on Tunnel Ventilation Fans |
| title_full_unstemmed | The Mechanical Impact of Aerodynamic Stall on Tunnel Ventilation Fans |
| title_short | The Mechanical Impact of Aerodynamic Stall on Tunnel Ventilation Fans |
| title_sort | mechanical impact of aerodynamic stall on tunnel ventilation fans |
| url | http://dx.doi.org/10.1155/2012/402763 |
| work_keys_str_mv | AT agsheard themechanicalimpactofaerodynamicstallontunnelventilationfans AT acorsini themechanicalimpactofaerodynamicstallontunnelventilationfans AT agsheard mechanicalimpactofaerodynamicstallontunnelventilationfans AT acorsini mechanicalimpactofaerodynamicstallontunnelventilationfans |