Molecular dynamics simulations of nanoscale boiling on mesh-covered surfaces

Thin film liquid-vapor phase change phenomena over nano-porous substrates: A molecular dynamics perspective

“…6 , Fig. 7 ), we can observe that the pores do not dry out during the simulation time span which is consistent with previous studies [ 32 , 46 ]. Although evaporation is complete, there are always some liquid argon atoms which remains inside the pores.…”

“…Hu and Sun [ 29 ] investigated thin film evaporation and nucleate boiling on nanostructured surfaces, finding a peak heat transfer coefficient of 31MW/m 2 K. Bai et al [ 30 , 31 ] analyzed explosive boiling on simple copper surfaces and discovered that raising the surface roughness ratio resulted in a larger surface area and lower Kapitza resistance, which improves boiling heat transmission. Ahmed et al [ 32 ] investigated nanoscale boiling on mesh-covered surfaces and found that porous and simple mesh-covered surfaces increased evaporation rate by 23.89% and 19.16%, respectively compared to flat surface. Most of the simulations showed a huge heat flux transfer to fluid, such as 480 MW/m 2 by Liu et al [ 23 ], 600–1000 MW/m 2 by Diaz and Guo [ 33 ] and 1100 MW/m 2 by Shavik et al [ 28 ].…”

Pool boiling simulation using molecular dynamics approach: Comparing the effectiveness of adding nanoparticles versus creating porous nanostructures

“…Specifically, the separation of the liquid cluster and the formation of the vapor region are considered to occur when the argon density in that interface falls below 0.2 g/cm 3 . By comparing the results of this paper with Ahmad et al 23 study, it could be founded that both studies have almost a similar trend and a good consistency in plots of the argon density distribution.…”

“…To validate the simulation framework, the change in argon temperature during the simulation process on a plain surface is shown in Figure 2. The results are compared with the findings of Ahmad et al 23 and a good agreement is observed with a maximum error of 3.47% and a corresponding temperature difference of 3.79 K. This demonstrates the reliability of the simulation in capturing the temperature behavior in comparison to the reference work.…”

“…Upon comparing these findings to the study conducted by Ahmad et al, 23 it can be inferred that adding nanoparticles (with a maximum 29.60% increment) can enhance the maximum heat flux by approximately 15% more than the case of creating a porous geometry (with a maximum increment of 14.80%). This difference underscores the effectiveness of nanoparticle addition in enhancing heat transfer in this context.…”