|
| Simulation Study on the Distortion of Inlet Flow Field Caused by Twin Centrifugal Compressors Sharing a Single Inlet Manifold |
| DOI：10.13949/j.cnki.nrjgc.2020.04.008 |
| Key Words:inlet distortion centrifugal compressor Y type pipe numerical simulation |
| Author Name | Affiliation | | TONG Ding,TIAN Hongyan,XING Weidong,LIU Ying,LIU Xinyuan | 1.National Key Laboratory of Diesel Engine Turbocharging Technology, China North Engine Research Institute, Tianjin 300400, China；2.School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China |
|
| Hits: 3829 |
| Download times: 1620 |
| Abstract:In order to improve the aerodynamic performance of twin centrifugal compressors used in a V-type turbocharged engine, the distortion of inlet flow field caused by its common inlet manifold were studied. To this end, the initial performance of the twin compressors was tested on a test bed, and the simulation model was calibrated. Then, the distribution characteristics of inlet flow fields of the twin compressors were analyzed. Results indicate that sharing a single inlet manifold has a significant impact on the aerodynamic performance of the twin compressors, resulting in a reduction of blockage flow and a decline in compressor efficiency from the blockage point to the highest efficiency point. Not only that, the performance of the right compressor is more likely to deteriorate than the left compressor. The mechanism that causes this phenomenon is that due to the limitation of installation space, the flow field distortion of the right compressor is higher than the left compressor under the superimposed effect of airflow at the throat and inlet, regardless of the circumferential and blade height direction. Moreover, the distortion of inlet flow field will continue to extend inside the compressor impeller, making the compressor performance worse. |
| View Full Text View/Add Comment Download reader |
|
|
|