Heatline approach for visualization of heat flow and efficient thermal mixing with discrete heat sources

Modelling conjugate flow and heat transfer in a ventilated room for indoor thermal comfort assessment

“…In the conjugate mixed convection study, it was revealed that the locations of vertical heat source and horizontal ventilation opening slot would have major influences on the strength and pattern of flow circulation and the level of heat transfer [9]. Despite most of the two-dimensional conjugate heat transfer studies have shown basic fluid flow and heat transfer characteristics using stream lines and heat lines [10][11], there are limited studies on modelling more general and complicated flow and heat transfer features in a threedimensional (3-D) configuration. Furthermore, there are not many studies on analysing the relationships between indoor thermal condition and conjugate conduction and convection heat transfer performance.…”

Sensitivity of heatfunction boundary conditions on invariance of Bejan’s heatlines for natural convection in enclosures with various wall heatings

“…The reference of heatfunction (P ¼ 0) is generally considered at the adiabatic wall of the cavity or any convenient point (origin or cold-cold junction) as mentioned in previous studies [17,[20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39]. However, in this study, various possible locations of datum of heatfunction (P ¼ 0) and heatfunction boundary conditions are explored and discussed for systems with more than one (case 1) and no adiabatic wall (case 3).…”

“…They considered adiabatic top wall and reference of heatfunction (P ¼ 0) was considered at the top adiabatic wall irrespective of thermal boundary conditions of bottom/side walls. Further, studies on natural convection via heatlines for discretely heated square cavities were carried out for various possible positions of heater on the side as well as bottom wall(s) by Kaluri and Basak [23] and Kaluri et al [24] with the Dirichlet heatfunction boundary condition (P ¼ 0) at the top adiabatic wall.…”

Using of Bejan's Heatline Technique for Analysis of Natural Convection in a Divided Cavity with Differentially Changing Conductive Partition

“…(13) and (14), the following dimensionless heatfunction equation can be obtained from Eqs. (19) and (20).…”

“…They studied a wide range of Rayleigh numbers (10 0 -10 6 ). Laminar natural convection in a square cavity with distributed heat sources was studied by Kaluri et al [20]. They found that heatlines a suitable guidelines to assemble discrete heat sources.…”