A Numerical Study of The Heat Transfer Intensification Using High Amplitude Acoustic Waves
The current practice in the efforts aiming to improve cooling conditions is to place emphasis on the application of non-stationary flow effects, such as the unsteady jet heat transfer or the heat transfer intensification by means of a high-amplitude oscillatory motion. The research presented in this...
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| Format: | Article |
| Language: | English |
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Institute of Fundamental Technological Research Polish Academy of Sciences
2018-01-01
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| Series: | Archives of Acoustics |
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| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/2109 |
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| author | Sebastian RULIK Włodzimierz WRÓBLEWSKI |
| author_facet | Sebastian RULIK Włodzimierz WRÓBLEWSKI |
| author_sort | Sebastian RULIK |
| collection | DOAJ |
| description | The current practice in the efforts aiming to improve cooling conditions is to place emphasis on the application of non-stationary flow effects, such as the unsteady jet heat transfer or the heat transfer intensification by means of a high-amplitude oscillatory motion. The research presented in this paper follows this direction.
A new concept is put forward to intensify the heat transfer in the cooling channels with the use of an acoustic wave generator. The acoustic wave is generated by a properly shaped fixed cavity or group of cavities.
The sound generated by the cavity is a phenomenon analysed in various publications focused on the methods of its reduction. The phenomenon is related to the feedback mechanism between the vortices flowing from the leading edge and the acoustic waves generated within the cavity. The acoustic waves are generated by the interaction between the vortices and the cavity walls. Strong instabilities can be observed within a certain range of the free flow velocities. The investigations presented in this paper are oriented towards the use of the phenomenon for the purposes of the heat transfer process intensification. The first part of the work presents the numerical model used in the analysis, as well as its validation and comparison with empirical relations. The numerical model is constructed using the commercial CFD
Ansys CFX-16.0 commercial program.
The next part includes determining of the relationship between the amplitude of the acoustic oscillations and the cooling conditions within the cavity. The calculations are performed for various flow conditions. |
| format | Article |
| id | doaj-art-e96ada8ae67247f1bf49bce290ea965b |
| institution | Matheson Library |
| issn | 0137-5075 2300-262X |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Institute of Fundamental Technological Research Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Acoustics |
| spelling | doaj-art-e96ada8ae67247f1bf49bce290ea965b2025-08-02T22:23:18ZengInstitute of Fundamental Technological Research Polish Academy of SciencesArchives of Acoustics0137-50752300-262X2018-01-0143110.24425/118078A Numerical Study of The Heat Transfer Intensification Using High Amplitude Acoustic WavesSebastian RULIK0Włodzimierz WRÓBLEWSKI1Silesian Univeristy of TechnologySilesian Univeristy of TechnologyThe current practice in the efforts aiming to improve cooling conditions is to place emphasis on the application of non-stationary flow effects, such as the unsteady jet heat transfer or the heat transfer intensification by means of a high-amplitude oscillatory motion. The research presented in this paper follows this direction. A new concept is put forward to intensify the heat transfer in the cooling channels with the use of an acoustic wave generator. The acoustic wave is generated by a properly shaped fixed cavity or group of cavities. The sound generated by the cavity is a phenomenon analysed in various publications focused on the methods of its reduction. The phenomenon is related to the feedback mechanism between the vortices flowing from the leading edge and the acoustic waves generated within the cavity. The acoustic waves are generated by the interaction between the vortices and the cavity walls. Strong instabilities can be observed within a certain range of the free flow velocities. The investigations presented in this paper are oriented towards the use of the phenomenon for the purposes of the heat transfer process intensification. The first part of the work presents the numerical model used in the analysis, as well as its validation and comparison with empirical relations. The numerical model is constructed using the commercial CFD Ansys CFX-16.0 commercial program. The next part includes determining of the relationship between the amplitude of the acoustic oscillations and the cooling conditions within the cavity. The calculations are performed for various flow conditions.https://acoustics.ippt.pan.pl/index.php/aa/article/view/2109cavity noisesound wave coolingflow over a cavitytransient coolingblade cooling intensification |
| spellingShingle | Sebastian RULIK Włodzimierz WRÓBLEWSKI A Numerical Study of The Heat Transfer Intensification Using High Amplitude Acoustic Waves Archives of Acoustics cavity noise sound wave cooling flow over a cavity transient cooling blade cooling intensification |
| title | A Numerical Study of The Heat Transfer Intensification Using High Amplitude Acoustic Waves |
| title_full | A Numerical Study of The Heat Transfer Intensification Using High Amplitude Acoustic Waves |
| title_fullStr | A Numerical Study of The Heat Transfer Intensification Using High Amplitude Acoustic Waves |
| title_full_unstemmed | A Numerical Study of The Heat Transfer Intensification Using High Amplitude Acoustic Waves |
| title_short | A Numerical Study of The Heat Transfer Intensification Using High Amplitude Acoustic Waves |
| title_sort | numerical study of the heat transfer intensification using high amplitude acoustic waves |
| topic | cavity noise sound wave cooling flow over a cavity transient cooling blade cooling intensification |
| url | https://acoustics.ippt.pan.pl/index.php/aa/article/view/2109 |
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