THE EFFECT OF WALL FORCE FIELD ON TEMPERATURE DISTRIBUTION IN NANOCHANNEL CONTAINING LENNARD-JONES FLUID BY MOLECULAR DYNAMIC SIMULATION

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HEIDARINEJAD GHASSEM; RABANI REZA; SHIRANI EBRAHIM

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Journal: Modares Mechanical Engineering Year:2017 | Volume:17 | Issue:6 Page(s): 23-31

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Title

THE EFFECT OF WALL FORCE FIELD ON TEMPERATURE DISTRIBUTION IN NANOCHANNEL CONTAINING LENNARD-JONES FLUID BY MOLECULAR DYNAMIC SIMULATION

Author(s)

HEIDARINEJAD GHASSEM | RABANI REZA | SHIRANI EBRAHIM | Issue Writer Certificate

Keywords

SURFACE EFFECTQ1

RAREFIED GASQ1

TEMPERATURE PROFILEQ1

Abstract

In this paper heat transfer through argon gas between two stationary walls of a nano sized channel is investigated by the use of molecular dynamic method. Comparison between two and three-dimensional solutions shows that for accurate modeling of wall force field on heat transfer, the accuracy of two-dimensional molecular dynamic solution is inadequate. Two-dimensional solution predicts the value for density and temperature less than the value of three-dimensional solution near each wall. Considering the effect of domain size on accuracy of thermal solution shows that domain size should be extended for at least one mean free path in periodic direction to have domain independent results. Distribution of fluid properties in the width of the channel shows that independent of implemented temperature difference, presence of the wall force field changes the temperature and density profile in one nanometer from each wall drastically. In addition to variation in density due to the wall force filed, temperature difference between the walls causes additional variation in density profile near walls. Increasing the wall’s temperature difference more than 20 degrees, makes a notable density variation of more than 5 percent in comparison with gas density distribution in the isothermal walls case. Variation in density near walls due to temperature differences leads to mismatch between the non-dimensional TEMPERATURE PROFILEs and calculated thermal conductivity coefficient of the gas for various temperature differences.

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APA: Copy

HEIDARINEJAD, GHASSEM, RABANI, REZA, & SHIRANI, EBRAHIM. (2017). THE EFFECT OF WALL FORCE FIELD ON TEMPERATURE DISTRIBUTION IN NANOCHANNEL CONTAINING LENNARD-JONES FLUID BY MOLECULAR DYNAMIC SIMULATION. MODARES MECHANICAL ENGINEERING, 17(6 ), 23-31. SID. https://sid.ir/paper/179259/en

Vancouver: Copy

HEIDARINEJAD GHASSEM, RABANI REZA, SHIRANI EBRAHIM. THE EFFECT OF WALL FORCE FIELD ON TEMPERATURE DISTRIBUTION IN NANOCHANNEL CONTAINING LENNARD-JONES FLUID BY MOLECULAR DYNAMIC SIMULATION. MODARES MECHANICAL ENGINEERING[Internet]. 2017;17(6 ):23-31. Available from: https://sid.ir/paper/179259/en

IEEE: Copy

GHASSEM HEIDARINEJAD, REZA RABANI, and EBRAHIM SHIRANI, “THE EFFECT OF WALL FORCE FIELD ON TEMPERATURE DISTRIBUTION IN NANOCHANNEL CONTAINING LENNARD-JONES FLUID BY MOLECULAR DYNAMIC SIMULATION,” MODARES MECHANICAL ENGINEERING, vol. 17, no. 6 , pp. 23–31, 2017, [Online]. Available: https://sid.ir/paper/179259/en

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