A Study on Centrifugal Impeller and Diffuser FlowSource: Journal of Engineering for Gas Turbines and Power:;1981:;volume( 103 ):;issue: 004::page 688Author:H. Krain
DOI: 10.1115/1.3230791Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The flow field development within a centrifugal compressor stage was analyzed using an advanced laser velocimetry [4]. A splitter blade impeller coupled with a vaned and vaneless diffuser has been found to have similar internal flow patterns for both the vaneless and vaned diffuser design. Different velocity profiles have been analyzed for adjacent channels behind the splitter blade leading edge. A considerable wake flow was observed near the impeller exit. Detailed optical measurements within the vaned diffuser entrance region gave evidence of a periodically fluctuating, highly distorted diffuser inlet flow. Unsteady flow angle deviations of 13 degrees have been discovered within the diffuser throat. Maximum flow angle differences up to 27 degrees occurred from hub to shroud.
keyword(s): Flow (Dynamics) , Impellers , Diffusers , Blades , Entrance region , Laser velocimetry , Unsteady flow , Vaneless diffusers , Internal flow , Design , Wakes , Channels (Hydraulic engineering) , Optical measurement AND Compressors ,
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| contributor author | H. Krain | |
| date accessioned | 2017-05-08T23:10:58Z | |
| date available | 2017-05-08T23:10:58Z | |
| date copyright | October, 1981 | |
| date issued | 1981 | |
| identifier issn | 1528-8919 | |
| identifier other | JETPEZ-26769#688_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/94471 | |
| description abstract | The flow field development within a centrifugal compressor stage was analyzed using an advanced laser velocimetry [4]. A splitter blade impeller coupled with a vaned and vaneless diffuser has been found to have similar internal flow patterns for both the vaneless and vaned diffuser design. Different velocity profiles have been analyzed for adjacent channels behind the splitter blade leading edge. A considerable wake flow was observed near the impeller exit. Detailed optical measurements within the vaned diffuser entrance region gave evidence of a periodically fluctuating, highly distorted diffuser inlet flow. Unsteady flow angle deviations of 13 degrees have been discovered within the diffuser throat. Maximum flow angle differences up to 27 degrees occurred from hub to shroud. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | A Study on Centrifugal Impeller and Diffuser Flow | |
| type | Journal Paper | |
| journal volume | 103 | |
| journal issue | 4 | |
| journal title | Journal of Engineering for Gas Turbines and Power | |
| identifier doi | 10.1115/1.3230791 | |
| journal fristpage | 688 | |
| journal lastpage | 697 | |
| identifier eissn | 0742-4795 | |
| keywords | Flow (Dynamics) | |
| keywords | Impellers | |
| keywords | Diffusers | |
| keywords | Blades | |
| keywords | Entrance region | |
| keywords | Laser velocimetry | |
| keywords | Unsteady flow | |
| keywords | Vaneless diffusers | |
| keywords | Internal flow | |
| keywords | Design | |
| keywords | Wakes | |
| keywords | Channels (Hydraulic engineering) | |
| keywords | Optical measurement AND Compressors | |
| tree | Journal of Engineering for Gas Turbines and Power:;1981:;volume( 103 ):;issue: 004 | |
| contenttype | Fulltext |