Numerical study of ice accretion inside an inertial particle separator
The inertial particle separator (IPS) installed before a helicopter engine runs the risk of ice accretion. This paper describes a numerical study of ice accretion inside an IPS. The effects of the droplet diameter (MVD = 5, 10, and 20 µm), liquid water content (LWC = 0.5, 2, and 4 g/m3), and incomin...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2022-05-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0093145 |
| _version_ | 1811250649293127680 |
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| author | Changbo Qiu Ningli Chen Yaping Hu Biao Wang Songjun Hu |
| author_facet | Changbo Qiu Ningli Chen Yaping Hu Biao Wang Songjun Hu |
| author_sort | Changbo Qiu |
| collection | DOAJ |
| description | The inertial particle separator (IPS) installed before a helicopter engine runs the risk of ice accretion. This paper describes a numerical study of ice accretion inside an IPS. The effects of the droplet diameter (MVD = 5, 10, and 20 µm), liquid water content (LWC = 0.5, 2, and 4 g/m3), and incoming velocity (U0 = 45, 60, and 90 m/s) on ice accretion are studied. The results show that ice accretes on the windward side of the hub, the bent surface of the shroud, and the leading edge of the splitter. The ice thickness on all the surfaces of the IPS generally increases with increasing U0, MVD, and LWC, with the exception that the ice layer thickness on the splitter surface decreases as the MVD increases. This exception arises because the mass of water droplets impinging on the upper surface of the splitter wall decreases with increasing MVD. The effect of ice accretion on the aerodynamic performance of the IPS is also studied. It is found that ice accretion can block the flow area of the “throat” and the inlet of the scavenge flow channel, thus modifying the aerodynamic shape of the inner surface of the IPS and the internal flow field. When MVD = 10 µm and LWC = 4 g/m3, the scavenge ratio after icing decreases with increasing ice thickness. With the exception of LWC = 0.5 g/m3, the total pressure recovery coefficient of the core flow path of the IPS obviously decreases as the ice layer thickens. |
| first_indexed | 2024-04-12T16:07:49Z |
| format | Article |
| id | doaj.art-332378ccc60944a8bc49aabb700b2505 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-04-12T16:07:49Z |
| publishDate | 2022-05-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-332378ccc60944a8bc49aabb700b25052022-12-22T03:25:59ZengAIP Publishing LLCAIP Advances2158-32262022-05-01125055027055027-910.1063/5.0093145Numerical study of ice accretion inside an inertial particle separatorChangbo Qiu0Ningli Chen1Yaping Hu2Biao Wang3Songjun Hu4AECC Hunan Aviation Powerplant Research Institute, Zhuzhou 412002, ChinaCollege of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaAECC Hunan Aviation Powerplant Research Institute, Zhuzhou 412002, ChinaThe inertial particle separator (IPS) installed before a helicopter engine runs the risk of ice accretion. This paper describes a numerical study of ice accretion inside an IPS. The effects of the droplet diameter (MVD = 5, 10, and 20 µm), liquid water content (LWC = 0.5, 2, and 4 g/m3), and incoming velocity (U0 = 45, 60, and 90 m/s) on ice accretion are studied. The results show that ice accretes on the windward side of the hub, the bent surface of the shroud, and the leading edge of the splitter. The ice thickness on all the surfaces of the IPS generally increases with increasing U0, MVD, and LWC, with the exception that the ice layer thickness on the splitter surface decreases as the MVD increases. This exception arises because the mass of water droplets impinging on the upper surface of the splitter wall decreases with increasing MVD. The effect of ice accretion on the aerodynamic performance of the IPS is also studied. It is found that ice accretion can block the flow area of the “throat” and the inlet of the scavenge flow channel, thus modifying the aerodynamic shape of the inner surface of the IPS and the internal flow field. When MVD = 10 µm and LWC = 4 g/m3, the scavenge ratio after icing decreases with increasing ice thickness. With the exception of LWC = 0.5 g/m3, the total pressure recovery coefficient of the core flow path of the IPS obviously decreases as the ice layer thickens.http://dx.doi.org/10.1063/5.0093145 |
| spellingShingle | Changbo Qiu Ningli Chen Yaping Hu Biao Wang Songjun Hu Numerical study of ice accretion inside an inertial particle separator AIP Advances |
| title | Numerical study of ice accretion inside an inertial particle separator |
| title_full | Numerical study of ice accretion inside an inertial particle separator |
| title_fullStr | Numerical study of ice accretion inside an inertial particle separator |
| title_full_unstemmed | Numerical study of ice accretion inside an inertial particle separator |
| title_short | Numerical study of ice accretion inside an inertial particle separator |
| title_sort | numerical study of ice accretion inside an inertial particle separator |
| url | http://dx.doi.org/10.1063/5.0093145 |
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