Analysis of Convection Phenomenon in Enclosure Utilizing Nanofluids with Baffle Effects

被引:21
作者
Al-Farhany, Khaled [1 ]
Al-Muhja, Barik [1 ]
Loganathan, Karuppusamy [2 ,3 ]
Periyasamy, Umadevi [4 ]
Ali, Farhan [5 ]
Sarris, Ioannis E. [6 ]
机构
[1] Univ Al Qadisiyah, Dept Mech Engn, Al Qadisiyah 58001, Iraq
[2] Manipal Univ Jaipur, Dept Math & Stat, Jaipur 303007, Rajasthan, India
[3] Live4Research, Res & Dev Wing, Tiruppur 638106, Tamil Nadu, India
[4] Dr NGP Arts & Sci Coll, Dept Math, Coimbatore 641048, Tamil Nadu, India
[5] Fed Urdu Univ Arts Sci & Technol, Dept Math Sci, Karachi 75300, Pakistan
[6] Univ West Attica, Dept Mech Engn, 250 Thivon & P Ralli Str, Athens 12244, Greece
关键词
baffle; convection; enclosure; inclination angle; nanofluid; CONJUGATE NATURAL-CONVECTION; HEAT-TRANSFER; MIXED CONVECTION; SQUARE CAVITY; THIN FIN; FLOW; LENGTH;
D O I
10.3390/en15186615
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The behavior of convective heat transfer in an enclosure filled with Cu-water nanofluid with a baffle has been numerically studied using the finite element method. The enclosure's top and bottom walls were adiabatic, while the other two were maintained at various temperatures. The left hot wall had an effective thickness and a baffle was added to the bottom wall. The influence of different parameters like the nanoparticle's concentration (phi), Rayleigh number (Ra), the thermal conductivity ratio of the thick wall (Kr), baffle angle (empty set), and the hot wall thickness (D) on the isotherm and fluid flow patterns were examined. The result showed that the average Nusselt number was enhanced, owing to the strength of the buoyancy force becoming more effective. Furthermore, as the baffle inclination angle increased, the maximum stream function at the core corresponded to the angle when it reached empty set = 60% then it gradually decreased to the minimum value as the baffle angle reached close to empty set = 120 degrees.
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页数:18
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