- All Journals
- Al-Qadisiyah University
- Basrah University
- Kirkuk University
- Mosul University
- The Iraqi Borad for Medical Specialization
- University of Anbar
- University of Technology
- Al Mustafa University
- Al-Zahraa University for Women
- Alnoor University
- Kunooz University
- Misan University
- Ninevah University
- Tikrit University
- University of Al-Hamdaniya
- University of Kerbala
Natural Convection in a Vertical Rectangular Enclosure | ||
| Kirkuk Journal of Science | ||
| Article 1, Volume 8, Issue 4, 2013, Pages 1-16 PDF (0 K) | ||
| DOI: 10.32894/kujss.2013.87984 | ||
| Author | ||
| Manar Salih Mahdi | ||
| Abstract | ||
| In this paper an experimental work has been conducted to investigate the influence of heating the lower half and cooling the upper half of vertical surface of a rectangular enclosure on natural convection. The enclosure length is (100 cm) with a square cross section (10×10 cm). The tests are done for three mass flow rates (0, 0.003 and 0.03 kg/sec) and five heat fluxes (48, 187, 400, 706 and 1080 W/m2). The hottest region formed is observed at ( = 0.67) where the lowest Nux is found while the coldest region is observed at ( = 0.33) where the highest Nux is found. Increasing the water mass flow rate enhances the heat transfer. The same thing happens with increasing the heat flux. A correlation is found to relate Nu with Ra (Nu= 0.216 Ra1/4) for (4×105≤Ra≤4×106). Both the experimental results and the correlation found are compared with a previous work and fair agreement is found. | ||
| Keywords | ||
| natural convection; vertical enclosure; heating and cooling | ||
|
Statistics Article View: 561 PDF Download: 449 |
||