Consider steady two-dimensional in a long solid bar of (a) square and 9b) ectangular cross sections as shown in the figure. The measured temperatures at elected points of the outer surfaces are as shown. The thermal conductivity of e body is k = 20 W/m. °C and there is no heat generation. Using the finite ifference method with a mesh size Ax = Ay = 1 cm, obtain the finite difference prmulation for the nodes.

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Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.