Figure 1
Modelling prototype used in the present study. Working session of Putra’s experimental device (A) [12]. Details: On 19th August 2014, Prof. Nandy Putra at the University of Indonesia authorized us to use his original figure which was published in [12]. Schematic experimental model, in which D is the cylinder diameter, L is the cylinder length, T C is the temperature of the cooling wall and T H is the temperature of the heating wall (B).