Molecular-level Control of Heat and mass transfer using by surface with nano-size holes

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This study have focused on heat and mass transport on the surface with micro-scale (from micro meter to nano meter) holes. Study is conducted theoretically and experimentally. Results of this study contained three parts ; (1) theoretical discussion on the model of development of anodizing film, (2) development of simulation code of molecular dynamics for micro-hole growth at anodizing, (3) heat transfer experiments and development of measurement methods for it.On the theoretical discussion, reexamination of existing models was conducted. Porous Alumina surface is treated as representative nano-hole surface.On simulation, numerical code of molecular dynamics is developed. Johnson potential function is used in order to adapt to various metallic surface. Computer code are examined by solving on the thermal problem of Sodium.Heat Transfer experiments are conducted on natural convection in a horizontal fluid layer with and without internal heating. Existing of micro-scale hole on the heat transfer surface is not affected on heat transfer, and flow motion. For boiling experiment as the phase-change system, new measurement methods for heat transport experiments were developed. Element analysis by PIXE and flow visualization by proton radiography were adapted to the heat transport phenomena.