...) camera, while fluid flow visualization is captured using a video camera microscope. Pulsed heat loads resulted in a large temperature overshoot in the test section until the fluid reached the onset of nucleate boiling (ONB), while significant vapor backflow is observed despite the presence of channel...

... from that of macrochannel is the appearance of confinement and elongation of nucleated bubbles. Markal et al. conducted saturated flow boiling experiments in parallel microchannels with simultaneous video images recorded. The flow visualization results indicated that elongated bubble flow and annular...