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RISS 인기검색어
- 검색키워드
- 저자 : Fahim Faraji (검색결과 2 건)
- 무료
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- 유료
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Temperature profile for nanoscale Poiseuille flow: a multiscale study
Fahim Faraji,Ali Rajabpour,Farshad Kowsary 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.2
In this study, we calculated the temperature profile for a nanoscopic Poiseuille flow system via two methods. The first method involved employing the tools of Molecular dynamics (MD) simulation, and the second method involved solving Navier’s equation analytically while the rates of fluid dynamic viscosity and thermal conductivity were calculated through MD. We used a temperature jump model as the boundary condition required for the latter method, which was also calculated through MD. We repeated the calculations for various amounts of wall temperature and fluid-wall interaction strength, and we observed a satisfactory agreement between the results of the two methods.
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Fluid heating in a nano-scale Poiseuille flow: A non-equilibrium molecular dynamics study
Fahim Faraji,Ali Rajabpour 한국물리학회 2017 Current Applied Physics Vol.17 No.12
In this paper we develop a non-equilibrium molecular dynamics computer simulation to study the fluid heating in a nano scale Poiseuille flow system and discuss the effects of the fluid-wall interaction strength and wall temperature on the fluid heating. We calculate the fluid temperature distribution, as well as the heat flux from the fluid towards the walls and the interfacial thermal resistance and discuss the variations of the fluid heating caused by the viscous and surface frictions as the fluid-wall interaction strength and wall temperature vary. It is found that as the fluid-wall interactions strengthen, the fluid heating diminishes. In weak interactions, the heat flux from the fluid to the wall is almost independent of the wall temperature while the interfacial thermal resistance decreases with increased wall temperature and the surface friction is the major contribution to the fluid heating; in contrast, in large interactions, both the heat flux and thermal resistance increase with increased wall temperature and the viscous friction is the major contribution to the fluid heating.
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