Rapid boiling and subsequent cooling of water in ultra-thin vapor chamber: A molecular dynamics study

Luo, Kailong1; Ji, Pengfei2,3

2022-04-01

10.1016/j.surfin.2022.101794

Surfaces and Interfaces   影响因子和分区

2468-0230

The interfacial interaction between water (H2O) molecules and hot/cold surface is of crucial importance to enhance thermal energy transport in ultra-thin vapor chamber. In this regard, a typical case focusing on the rapid boiling of liquid H2O film on hot surface (900K) and subsequent cooling of vapor H2O molecules on cold surface (300K) is carried out firstly, by tracking the spatiotemporal motion of H2O molecules and investigating the associated thermal energy transport. The potential energy of H2O molecules plays a dominant role in conveying thermal energy from the hot surface to the cold surface. Moreover, the impacts of hot surface temperature and surface wettability are studied. It is found that the higher degree of heating at the hot surface above 900K is detrimental to the overall performance of thermal energy transport. The combination of hydrophilic hot surface and hydrophilic cold surface brings the highest performance of thermal energy transport than the other three combinations (hydrophilic hot surface and hydrophobic cold surface, hydrophobic hot surface and hydrophilic cold surface, hydrophobic hot surface and hydrophobic cold surface). The present work provides atomistic insights into the rapid boiling and subsequent cooling related interfacial interaction between H2O molecules and hot/cold surface, as well as the impacts of surface heating and wettability, which are informative to the design of ultra-thin vapor chamber in thermal management.

Rapid boiling Cooling Surface heating Surface wettability Thermal energy transport

SCI

英语

通讯

National College Students Innovation and Entrepreneurship Training Program[BIT2021JX258] ; National Natural Science Foundation of China[51705234]

Chemistry ; Materials Science ; Physics

Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter

WOS:000765030500001

ELSEVIER

2-s2.0-85125437841

Web of Science

1.Beijing Inst Technol, Jinggong Coll, Beijing 100081, Peoples R China
2.Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China
3.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China

Luo, Kailong,Ji, Pengfei. Rapid boiling and subsequent cooling of water in ultra-thin vapor chamber: A molecular dynamics study[J]. Surfaces and Interfaces,2022,29.

Luo, Kailong,&Ji, Pengfei.(2022).Rapid boiling and subsequent cooling of water in ultra-thin vapor chamber: A molecular dynamics study.Surfaces and Interfaces,29.

Luo, Kailong,et al."Rapid boiling and subsequent cooling of water in ultra-thin vapor chamber: A molecular dynamics study".Surfaces and Interfaces 29(2022).