In this work, the experiments for each inlet section were conducted
so the air flow rate increased by small increments while
the water flow rate was constant at the desired value. To keep
the flow from boiling conditions, the heat load of 80W was provided
by a DC power supply during the experiments. The system
was allowed to approach a steady state before the flow pattern
and relevant data are recorded. The uncertainties associated with
different parameters are given in Table 1.