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7. Acknowledgment The authors thank the following Brazilian support entities: CAPES, CNPq, and FAPEMIG. A Mixed Convection Study in Inclined Channels with Discrete Heat Sources 31 8. A. (2007). A numerical investigation and parametric study of cooling an array of multiple protruding heat sources by a laminar slot air jet, International Journal of Heat and Fluid Flow, Vol. 28, pp. 787–805. Madhusudhana Rao, G. L. (2007). Laminar conjugate mixed convection in a vertical channel with heat generating components, International Journal of Heat and Mass Transfer, Vol.

Thus, this process of increasing temperature provides undesirable situations when cooling is aimed. Re = 10, γ = 0° Re = 100, γ = 0° Re = 10, γ = 45° Re = 100, γ = 45° Re = 10, γ = 90° Re = 100, γ = 90° Fig. 19. Velocity vectors for Gr = 105, Re = 10 and 100, and γ = 0°, 45°and 90° Figure (19) depicts the velocity vectors for Re = 10 and 100 and Gr = 105 for γ = 0°, 45°, and 90°. It can be noted that for Re = 10 and γ = 0°, 45°, and 90°, recirculations are generated by the fluid heated on the sources.

It is interesting noticing in Heater 2, that for Re = 100 and 1000, distances d = 2 and 3 do not present significant changes, but d = 1. Then, there is an optimum distance in which two heat sources can be placed apart to have lower temperatures and this is the case of d = 3 here, although d = 2 does not present a meaningful change in temperature either. This, in a certain way, can lead us to a better layout of the heat sources in an array. Of course, the presence of more heat sources and the geometry of the channel must be taken into account.

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