Effect of Vibration on the Heat Transfer Process in the Developing Region of Annulus with Rotating Inner Cylinder
Experimental investigation has been carried out to study the effect of induced vibration on the heat transfer process in the simultaneously developing of hydrodynamic and thermal boundary layer region of a concentric vertical annulus with uniformly heated outer cylinder and rotating solid inner cyli...
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| Format: | Article |
| Language: | English |
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Unviversity of Technology- Iraq
2015-04-01
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| Series: | Engineering and Technology Journal |
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| Online Access: | https://etj.uotechnology.edu.iq/article_101926_f334b51b8e9c18f351a020d705d54e6c.pdf |
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| author | Mauwafak A. Tawfik Akeel A. Mohammed Hayder Zuhair Zain |
| author_facet | Mauwafak A. Tawfik Akeel A. Mohammed Hayder Zuhair Zain |
| author_sort | Mauwafak A. Tawfik |
| collection | DOAJ |
| description | Experimental investigation has been carried out to study the effect of induced vibration on the heat transfer process in the simultaneously developing of hydrodynamic and thermal boundary layer region of a concentric vertical annulus with uniformly heated outer cylinder and rotating solid inner cylinder.The experimental setup consists of an annulus, which has a radius ratio of 0.365 and outer cylinder with a heated length 1.2 m subjected to the constant heat flux. The investigation covers Reynolds number (Re) range from 514 to 1991, Taylor number (Ta) values are 10.44×104& 82.23×104, heat flux varied from 468 W/m2 to 920 W/m2 and frequency (Fr) values are 32 & 77 Hz. Results showed for all frequency values that the local Nusselt number values increase as the heat flux increases when the value of frequency near the natural frequency and the value of the surface radiation decrease.Correlation equations have been deduced to calculate the rate of heat transfer, represented by the average Nusselt number (Num) as a function of (Ta), (Ra) and (Fr). A comparison has been made between the present work and the previous works for temperature and local Nusselt number variations and it has given a good agreement. |
| first_indexed | 2024-03-08T06:14:29Z |
| format | Article |
| id | doaj.art-62ee4fa5390d4a79a84486d8e4c05d23 |
| institution | Directory Open Access Journal |
| issn | 1681-6900 2412-0758 |
| language | English |
| last_indexed | 2024-03-08T06:14:29Z |
| publishDate | 2015-04-01 |
| publisher | Unviversity of Technology- Iraq |
| record_format | Article |
| series | Engineering and Technology Journal |
| spelling | doaj.art-62ee4fa5390d4a79a84486d8e4c05d232024-02-04T17:28:17ZengUnviversity of Technology- IraqEngineering and Technology Journal1681-69002412-07582015-04-01333A59061110.30684/etj.33.3A.6101926Effect of Vibration on the Heat Transfer Process in the Developing Region of Annulus with Rotating Inner CylinderMauwafak A. TawfikAkeel A. MohammedHayder Zuhair ZainExperimental investigation has been carried out to study the effect of induced vibration on the heat transfer process in the simultaneously developing of hydrodynamic and thermal boundary layer region of a concentric vertical annulus with uniformly heated outer cylinder and rotating solid inner cylinder.The experimental setup consists of an annulus, which has a radius ratio of 0.365 and outer cylinder with a heated length 1.2 m subjected to the constant heat flux. The investigation covers Reynolds number (Re) range from 514 to 1991, Taylor number (Ta) values are 10.44×104& 82.23×104, heat flux varied from 468 W/m2 to 920 W/m2 and frequency (Fr) values are 32 & 77 Hz. Results showed for all frequency values that the local Nusselt number values increase as the heat flux increases when the value of frequency near the natural frequency and the value of the surface radiation decrease.Correlation equations have been deduced to calculate the rate of heat transfer, represented by the average Nusselt number (Num) as a function of (Ta), (Ra) and (Fr). A comparison has been made between the present work and the previous works for temperature and local Nusselt number variations and it has given a good agreement.https://etj.uotechnology.edu.iq/article_101926_f334b51b8e9c18f351a020d705d54e6c.pdfheat transferannulusrotating inner cylindervibration |
| spellingShingle | Mauwafak A. Tawfik Akeel A. Mohammed Hayder Zuhair Zain Effect of Vibration on the Heat Transfer Process in the Developing Region of Annulus with Rotating Inner Cylinder Engineering and Technology Journal heat transfer annulus rotating inner cylinder vibration |
| title | Effect of Vibration on the Heat Transfer Process in the Developing Region of Annulus with Rotating Inner Cylinder |
| title_full | Effect of Vibration on the Heat Transfer Process in the Developing Region of Annulus with Rotating Inner Cylinder |
| title_fullStr | Effect of Vibration on the Heat Transfer Process in the Developing Region of Annulus with Rotating Inner Cylinder |
| title_full_unstemmed | Effect of Vibration on the Heat Transfer Process in the Developing Region of Annulus with Rotating Inner Cylinder |
| title_short | Effect of Vibration on the Heat Transfer Process in the Developing Region of Annulus with Rotating Inner Cylinder |
| title_sort | effect of vibration on the heat transfer process in the developing region of annulus with rotating inner cylinder |
| topic | heat transfer annulus rotating inner cylinder vibration |
| url | https://etj.uotechnology.edu.iq/article_101926_f334b51b8e9c18f351a020d705d54e6c.pdf |
| work_keys_str_mv | AT mauwafakatawfik effectofvibrationontheheattransferprocessinthedevelopingregionofannuluswithrotatinginnercylinder AT akeelamohammed effectofvibrationontheheattransferprocessinthedevelopingregionofannuluswithrotatinginnercylinder AT hayderzuhairzain effectofvibrationontheheattransferprocessinthedevelopingregionofannuluswithrotatinginnercylinder |