Application of Mass/Heat Transfer Analogy in the Investigation of Convective Heat Transfer in Stationary and Rotating Minichannels

摘要: Convective heat transfer during laminar fluid flow through channels is an important technological problem. The literature provides much research data on phenomena occurring of different dimensions and shapes based theoretical analysis, numerical calculations experimental investigations. Theoretical analysis has attempted to solve the problem convective in basic shape simplified conditions flow. Laminar pipes where velocity profile was parabolic described by Graetz (Graetz, 1885). His solution this classical further developed Sellars, Tribus Klein (Sellars et al., 1956). Alternatively, Levěque (Levěque, 1928) investigated entrance region hydraulic stabilisation occurs. All these works offer analytical Numerical investigation initiated Kays (Kays, 1955) who provided results for three types gas conditions: uniform wall temperature, flux difference between temperature. On other hand, work Sider Tite (Sider Tite, 1936) example early empirical formula coefficient calculations, regardless being heated or cooled, provided. above-mentioned were followed channels. Particularly, small diameters extensively investigated. It turned out that diameter often differed from those conventional dimensions. Mathematical equations describing cannot always be applied minior microchannels. Hence some researchers (Adams 1998), (Tso Mahulikar, 2000), (Owhaib Palm, 2004), (Lelea (Celata 2006), (Kandlikar (Yang Lin, 2007), (Yarin 2009) examined liquid circular miniand micro-channels using methods, mostly thermal balance method. However, surface temperature measurements method are difficult obtain due size tested. Application mass investigations mass/heat analogy makes it possible avoid as excludes measurements. In chapter application