@Article{cmes.2023.026657,
AUTHOR = {Ningbo Guo, Xianming Gao, Duanling Li, Jixing Zhang, Penghui Yin, Mengyi Hua},
TITLE = {Experimental and Numerical Analysis of the Influence of Microchannel Size and Structure on Boiling Heat Transfer},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {136},
YEAR = {2023},
NUMBER = {3},
PAGES = {3061--3082},
URL = {http://www.techscience.com/CMES/v136n3/51818},
ISSN = {1526-1506},
ABSTRACT = {Computational fluid dynamics was used and a numerical simulation analysis of boiling heat transfer in 
microchannels with three depths and three cross-sectional profiles was conducted. The heat transfer coefficient
and bubble generation process of three microchannel structures with a width of 80 μm and a depth of 40, 60, and
80 μm were compared during the boiling process, and the factors influencing bubble generation were studied. A
visual test bench was built, and test substrates of different sizes were prepared using a micro-nano laser. During
the test, the behavior characteristics of the bubbles on the boiling surface and the temperature change of the
heated wall were collected with a high-speed camera and a temperature sensor. It was found that the
microchannel with a depth of 80 μm had the largest heat transfer coefficient and shortest bubble growth period,
the rectangular channel had a larger peak heat transfer coefficient and a lower frequency of bubble occurrence,
while the V-shaped channel had the shortest growth period, i.e., the highest frequency of bubble occurrence, but
its heat transfer coefficient was smaller than that of the rectangular channel.},
DOI = {10.32604/cmes.2023.026657}
}