Numerical Model for Cavitational Flow in Hydraulic Poppet Valves
The paper presents a numerical simulation and analysis of the flow inside a poppet valve. First, the single-phase (liquid) flow is investigated, and an original model is introduced for quantitatively describing the vortex flow. Since an atmospheric outlet pressure produces large negative absolute pr...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Modelling and Simulation in Engineering |
| Online Access: | http://dx.doi.org/10.1155/2012/742162 |
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| _version_ | 1832565553202462720 |
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| author | Sandor I. Bernad Romeo Susan-Resiga |
| author_facet | Sandor I. Bernad Romeo Susan-Resiga |
| author_sort | Sandor I. Bernad |
| collection | DOAJ |
| description | The paper presents a numerical simulation and analysis of the flow inside a poppet valve. First, the single-phase (liquid) flow is investigated, and an original model is introduced for quantitatively describing the vortex flow. Since an atmospheric outlet pressure produces large negative absolute pressure regions, a two-phase (cavitating) flow analysis is also performed. Both pressure and density distributions inside the cavity are presented, and a comparison with the liquid flow results is performed. It is found that if one defines the cavity radius such that up to this radius the pressure is no larger than the vaporization pressure, then both liquid and cavitating flow models predict the cavity extent. The current effort is based on the application of the recently developed full cavitation model that utilizes the modified Rayleigh-Plesset equations for bubble dynamics. |
| format | Article |
| id | doaj-art-ff4c063b107f406192d89d8d403ed75c |
| institution | Kabale University |
| issn | 1687-5591 1687-5605 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Modelling and Simulation in Engineering |
| spelling | doaj-art-ff4c063b107f406192d89d8d403ed75c2025-02-03T01:07:20ZengWileyModelling and Simulation in Engineering1687-55911687-56052012-01-01201210.1155/2012/742162742162Numerical Model for Cavitational Flow in Hydraulic Poppet ValvesSandor I. Bernad0Romeo Susan-Resiga1Center of Advanced Research in Engineering Sciences, Romanian Academy, Timisoara Branch, 300223 Timisoara, RomaniaDepartment of Hydraulic Machinery, Politehnica University of Timisoara, 300222 Timisoara, RomaniaThe paper presents a numerical simulation and analysis of the flow inside a poppet valve. First, the single-phase (liquid) flow is investigated, and an original model is introduced for quantitatively describing the vortex flow. Since an atmospheric outlet pressure produces large negative absolute pressure regions, a two-phase (cavitating) flow analysis is also performed. Both pressure and density distributions inside the cavity are presented, and a comparison with the liquid flow results is performed. It is found that if one defines the cavity radius such that up to this radius the pressure is no larger than the vaporization pressure, then both liquid and cavitating flow models predict the cavity extent. The current effort is based on the application of the recently developed full cavitation model that utilizes the modified Rayleigh-Plesset equations for bubble dynamics.http://dx.doi.org/10.1155/2012/742162 |
| spellingShingle | Sandor I. Bernad Romeo Susan-Resiga Numerical Model for Cavitational Flow in Hydraulic Poppet Valves Modelling and Simulation in Engineering |
| title | Numerical Model for Cavitational Flow in Hydraulic Poppet Valves |
| title_full | Numerical Model for Cavitational Flow in Hydraulic Poppet Valves |
| title_fullStr | Numerical Model for Cavitational Flow in Hydraulic Poppet Valves |
| title_full_unstemmed | Numerical Model for Cavitational Flow in Hydraulic Poppet Valves |
| title_short | Numerical Model for Cavitational Flow in Hydraulic Poppet Valves |
| title_sort | numerical model for cavitational flow in hydraulic poppet valves |
| url | http://dx.doi.org/10.1155/2012/742162 |
| work_keys_str_mv | AT sandoribernad numericalmodelforcavitationalflowinhydraulicpoppetvalves AT romeosusanresiga numericalmodelforcavitationalflowinhydraulicpoppetvalves |