Effect of Impeller Diameter on Dynamic Response of a Centrifugal Pump Rotor
This paper investigates the effect of impeller diameter on the dynamic response of a centrifugal pump using an inverse dynamic method. For this purpose, the equations of motion of the shaft and the impeller are derived based on Timoshenko beam theory considering the impeller as a concentrated mass d...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-02-01
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| Series: | Vibration |
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| Online Access: | https://www.mdpi.com/2571-631X/4/1/10 |
| _version_ | 1797412150321348608 |
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| author | Alireza Shooshtari Mahdi Karimi Mehrdad Shemshadi Sareh Seraj |
| author_facet | Alireza Shooshtari Mahdi Karimi Mehrdad Shemshadi Sareh Seraj |
| author_sort | Alireza Shooshtari |
| collection | DOAJ |
| description | This paper investigates the effect of impeller diameter on the dynamic response of a centrifugal pump using an inverse dynamic method. For this purpose, the equations of motion of the shaft and the impeller are derived based on Timoshenko beam theory considering the impeller as a concentrated mass disk. For practical modeling, the model of Jones and Harris is added to the equation to include the effect of bearings. As a case study, the model is applied to a process pump used in an oil refinery. Computing the eigenvalues of the model and comparing them with the natural frequencies of the structure, the model updating of the problem is performed through an indirect method. Three impellers with different diameters are applied to the updated model. The results show that increasing the diameter of the pump impeller can increase the amplitude of vibration up to 52% at critical speeds of the rotor. It is found that in addition to the hydraulic condition and efficiency, the impeller diameter should be considered as an important factor in the selection of centrifugal pumps. |
| first_indexed | 2024-03-09T04:57:57Z |
| format | Article |
| id | doaj.art-387eeefd2d78472185d752f7a0ee437e |
| institution | Directory Open Access Journal |
| issn | 2571-631X |
| language | English |
| last_indexed | 2024-03-09T04:57:57Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Vibration |
| spelling | doaj.art-387eeefd2d78472185d752f7a0ee437e2023-12-03T13:03:46ZengMDPI AGVibration2571-631X2021-02-014111712910.3390/vibration4010010Effect of Impeller Diameter on Dynamic Response of a Centrifugal Pump RotorAlireza Shooshtari0Mahdi Karimi1Mehrdad Shemshadi2Sareh Seraj3Department of Mechanical Engineering, Bu-Ali Sina University, Hamedan 65175-4161, IranDepartment of Mechanical Engineering, Bu-Ali Sina University, Hamedan 65175-4161, IranDepartment of Mechanical Engineering, Bu-Ali Sina University, Hamedan 65175-4161, IranAutomotive Engineering Department, Tehran 16846-13114, IranThis paper investigates the effect of impeller diameter on the dynamic response of a centrifugal pump using an inverse dynamic method. For this purpose, the equations of motion of the shaft and the impeller are derived based on Timoshenko beam theory considering the impeller as a concentrated mass disk. For practical modeling, the model of Jones and Harris is added to the equation to include the effect of bearings. As a case study, the model is applied to a process pump used in an oil refinery. Computing the eigenvalues of the model and comparing them with the natural frequencies of the structure, the model updating of the problem is performed through an indirect method. Three impellers with different diameters are applied to the updated model. The results show that increasing the diameter of the pump impeller can increase the amplitude of vibration up to 52% at critical speeds of the rotor. It is found that in addition to the hydraulic condition and efficiency, the impeller diameter should be considered as an important factor in the selection of centrifugal pumps.https://www.mdpi.com/2571-631X/4/1/10rotor dynamicbearingcentrifugal pumpimpeller diameterLagrangian equations |
| spellingShingle | Alireza Shooshtari Mahdi Karimi Mehrdad Shemshadi Sareh Seraj Effect of Impeller Diameter on Dynamic Response of a Centrifugal Pump Rotor Vibration rotor dynamic bearing centrifugal pump impeller diameter Lagrangian equations |
| title | Effect of Impeller Diameter on Dynamic Response of a Centrifugal Pump Rotor |
| title_full | Effect of Impeller Diameter on Dynamic Response of a Centrifugal Pump Rotor |
| title_fullStr | Effect of Impeller Diameter on Dynamic Response of a Centrifugal Pump Rotor |
| title_full_unstemmed | Effect of Impeller Diameter on Dynamic Response of a Centrifugal Pump Rotor |
| title_short | Effect of Impeller Diameter on Dynamic Response of a Centrifugal Pump Rotor |
| title_sort | effect of impeller diameter on dynamic response of a centrifugal pump rotor |
| topic | rotor dynamic bearing centrifugal pump impeller diameter Lagrangian equations |
| url | https://www.mdpi.com/2571-631X/4/1/10 |
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