TY - JOUR
T1 - How roughness and thermal properties of a solid substrate determine the Leidenfrost temperature
T2 - Experiments and a model
AU - Wakata, Yuki
AU - Zhu, Ning
AU - Chen, Xiaoliang
AU - Lyu, Sijia
AU - Lohse, Detlef
AU - Chao, Xing
AU - Sun, Chao
N1 - Funding Information:
This work was supported by National Natural Science Foundation of China under Grants No. 11988102, 91852202, 51976105, and 91841302, the New Cornerstone Science Foundation through the XPLORER prize, ERC Advanced Grant DDD, Project No. 740479, and NWO through the Multiscale Catalytic Energy Conversion (MCEC) Research Center.
Publisher Copyright:
© 2023 American Physical Society.
PY - 2023/6/8
Y1 - 2023/6/8
N2 - In this Letter, we systematically investigate the Leidenfrost temperature for hot solid substrates with various thermal diffusivities and surface roughnesses. Based on the experimental results, we build a phenomenological model that considers the thermal diffusivity of a solid substrate and derive a relationship between the surface roughness and the resulting vapor film thickness. The generality of this model is supported by experimental data for different liquids and solid substrates. Our model thus allows for a theoretical prediction of the Leidenfrost temperature and develops a comprehensive understanding of the Leidenfrost effect.
AB - In this Letter, we systematically investigate the Leidenfrost temperature for hot solid substrates with various thermal diffusivities and surface roughnesses. Based on the experimental results, we build a phenomenological model that considers the thermal diffusivity of a solid substrate and derive a relationship between the surface roughness and the resulting vapor film thickness. The generality of this model is supported by experimental data for different liquids and solid substrates. Our model thus allows for a theoretical prediction of the Leidenfrost temperature and develops a comprehensive understanding of the Leidenfrost effect.
UR - https://www.scopus.com/pages/publications/85161808845
U2 - 10.1103/PhysRevFluids.8.L061601
DO - 10.1103/PhysRevFluids.8.L061601
M3 - Article
AN - SCOPUS:85161808845
SN - 2469-990X
VL - 8
JO - Physical review fluids
JF - Physical review fluids
IS - 6
M1 - L061601
ER -