Numerical and Experimental Investigation of the Effect of Cavitation on Dual Clearance Squeeze Film Damper
A new dynamic model is developed for the dual clearance squeeze film damper (DCSFD) considering the effect of cavitation in this paper. The relationship between the eccentricities of the inner and outer films is achieved based on the equations of motion. The Reynolds equation and Rayleigh–Plesset eq...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/3293708 |
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| author | Zhaojun Feng Guihuo Luo Hai Yang Wangqun Deng Wei Chen Cheng Shen |
| author_facet | Zhaojun Feng Guihuo Luo Hai Yang Wangqun Deng Wei Chen Cheng Shen |
| author_sort | Zhaojun Feng |
| collection | DOAJ |
| description | A new dynamic model is developed for the dual clearance squeeze film damper (DCSFD) considering the effect of cavitation in this paper. The relationship between the eccentricities of the inner and outer films is achieved based on the equations of motion. The Reynolds equation and Rayleigh–Plesset equation are employed to describe the kinetic properties of DCSFD and the cavitation effect of film, respectively. Under the assumption of compressible fluid, the pressure distribution of DCSFD is finally obtained by the numerically iterative method. The film pressure distribution in the outer layer (including the positive and negative pressure zones) obtained from the experimental test agrees well with the numerical prediction, which verifies the validity of the proposed numerical model. In Section 5, the effects of oil temperature, inlet pressure, eccentricity, and whirling frequency on the cavitation in the film are investigated systematically and experimentally. The experimental results indicate that cavitation mainly affect the pressure in the negative pressure zone of the inner and outer film of DCSFD, but has little influence on the pressure in the positive pressure zone. The area of cavitation increased with eccentricity; when the inner eccentricity reached 0.1 or above, the area near the injection hole of film also generated a small zone of negative pressure. The numerical model and the experimental results in this paper are valuable for further research and engineering applications of DCSFD. |
| format | Article |
| id | doaj-art-39a02378348f412c8bd92d7941163935 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-39a02378348f412c8bd92d79411639352025-02-03T06:11:59ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/32937083293708Numerical and Experimental Investigation of the Effect of Cavitation on Dual Clearance Squeeze Film DamperZhaojun Feng0Guihuo Luo1Hai Yang2Wangqun Deng3Wei Chen4Cheng Shen5College of Energy and Power Engineering of Nanjing University of Aeronautics and Astronautics, Key Laboratory of Jiangsu Aviation Powerplant, Nanjing, 210001, ChinaCollege of Energy and Power Engineering of Nanjing University of Aeronautics and Astronautics, Key Laboratory of Jiangsu Aviation Powerplant, Nanjing, 210001, ChinaAECC Hunan Aviation Powerplant Research Institute, Key Laboratory of Aero-engine Vibration Technology, Aero Engine Corporation of China, Zhuzhou, 412002, ChinaAECC Hunan Aviation Powerplant Research Institute, Key Laboratory of Aero-engine Vibration Technology, Aero Engine Corporation of China, Zhuzhou, 412002, ChinaCollege of Energy and Power Engineering of Nanjing University of Aeronautics and Astronautics, Key Laboratory of Jiangsu Aviation Powerplant, Nanjing, 210001, ChinaCollege of Energy and Power Engineering of Nanjing University of Aeronautics and Astronautics, Key Laboratory of Jiangsu Aviation Powerplant, Nanjing, 210001, ChinaA new dynamic model is developed for the dual clearance squeeze film damper (DCSFD) considering the effect of cavitation in this paper. The relationship between the eccentricities of the inner and outer films is achieved based on the equations of motion. The Reynolds equation and Rayleigh–Plesset equation are employed to describe the kinetic properties of DCSFD and the cavitation effect of film, respectively. Under the assumption of compressible fluid, the pressure distribution of DCSFD is finally obtained by the numerically iterative method. The film pressure distribution in the outer layer (including the positive and negative pressure zones) obtained from the experimental test agrees well with the numerical prediction, which verifies the validity of the proposed numerical model. In Section 5, the effects of oil temperature, inlet pressure, eccentricity, and whirling frequency on the cavitation in the film are investigated systematically and experimentally. The experimental results indicate that cavitation mainly affect the pressure in the negative pressure zone of the inner and outer film of DCSFD, but has little influence on the pressure in the positive pressure zone. The area of cavitation increased with eccentricity; when the inner eccentricity reached 0.1 or above, the area near the injection hole of film also generated a small zone of negative pressure. The numerical model and the experimental results in this paper are valuable for further research and engineering applications of DCSFD.http://dx.doi.org/10.1155/2021/3293708 |
| spellingShingle | Zhaojun Feng Guihuo Luo Hai Yang Wangqun Deng Wei Chen Cheng Shen Numerical and Experimental Investigation of the Effect of Cavitation on Dual Clearance Squeeze Film Damper Shock and Vibration |
| title | Numerical and Experimental Investigation of the Effect of Cavitation on Dual Clearance Squeeze Film Damper |
| title_full | Numerical and Experimental Investigation of the Effect of Cavitation on Dual Clearance Squeeze Film Damper |
| title_fullStr | Numerical and Experimental Investigation of the Effect of Cavitation on Dual Clearance Squeeze Film Damper |
| title_full_unstemmed | Numerical and Experimental Investigation of the Effect of Cavitation on Dual Clearance Squeeze Film Damper |
| title_short | Numerical and Experimental Investigation of the Effect of Cavitation on Dual Clearance Squeeze Film Damper |
| title_sort | numerical and experimental investigation of the effect of cavitation on dual clearance squeeze film damper |
| url | http://dx.doi.org/10.1155/2021/3293708 |
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