| Investigations on an Axial Flow Fan Stage subjected to Circumferential Inlet Flow Distortion and Swirl |
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| 作者姓名： | M. Govardhan K. Viswanath |
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| 作者单位： | Thermal Turbomachines Laboratory Department of Mechanical Engineering，Indian Institute of Technology，Madras 600 036，India |
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| 摘 要： | INTRODUCTIONInletfiowdistortionisatermusedtodenotethewriationofflowpropertiesasafunctionofthespa-tialcoordinatesandtime.Thenonuniformityoc-cursinconunonflowpropertiessuchastotalpressure,staticpressure'velocity,temperature,flowangleandgasconstituency.Swirlisthetermusedtodescribetherotationoffiowinrelationtotherotationoftheforor.Swirlmaybegeneratedasaconsequenceofsec-ondaryflowsinducedduetoflowcurvaturesorduetothepresenceofInletGuideVanes(IGV).DistortionandSwirl(inducedduetocurvatureoffl…
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| 关 键 词： | 轴流叶片 转子 圆周畸变 |
| 收稿时间： | 15 May 1997 |
Investigations on an axial flow fan stage subjected to circumferential inlet flow distortion and swirl |
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| M. Govardhan, K. Viswanath.Investigations on an Axial Flow Fan Stage subjected to Circumferential Inlet Flow Distortion and Swirl[J].Journal of Thermal Science,1997,6(4):241-250. |
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| Authors: | M Govardhan K Viswanath |
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| Affiliation: | (1) Thermal Turbomachines Laboratory, Department of Mechanical Engineering, Indian Institute of Technology, 600 036 Madras, India |
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| Abstract: | The combined effects of swirl and circumferential inlet flow distortion on the flow field of an axial flow fan stage are reported in this paper. The study involves measurements at the inlet of the rotor and exit of the rotor and stator at design and off design now conditions. The study indicated that at the design flow condition, swirl had caused deterioration of the performance in addition to that caused by distortfou. Pressure rise imparted in the distortion zone is higher than in the free zone. The attenuation of distortion is high in the presence of swirl. |
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| Keywords: | circumferential distortion swirl inlet guide vanes distortion index |
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