Abstract
The transition process from steady convection to chaos is experimentallystudied in thermocapillary convections of floating half zone. The onsetof temperature oscillations in the liquid bridge of floating half zoneand further transitions of the temporal convective behaviour aredetected by measuring the temperature in the liquid bridge. The fastFourier transform reveals the frequency and amplitude characteristics ofthe flow transition. The experimental results indicate the existence ofa sequence of period-doubling bifurcations that culminate in chaos. Themeasured Feigenbaum numbers are δ2 = 4.69 and δ4 = 4.6,which are comparable with the theoretical asymptotic value δ = 4.669.
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