A statistical method for simulation of boiling flow inside a Platinum microchannel

Sara Rostami, Hossein Ahmadi-Danesh-Ashtiani, Davood Toghraie and Reza Fazaeli

Physica A: Statistical Mechanics and its Applications, 2020, vol. 548, issue C

Abstract: This paper presents molecular dynamics simulations to study on the effects of external driving force and boundary wall temperature on the density, velocity and temperature profiles of Argon fluid atoms, flowed in a platinum microchannel with square section. The Argon atoms are structured in three regions. Two thin liquid film of Argon sandwich central vapor zone. Applying wall temperatures in the range of 84K to 133K prepares boiling condition which causes liquid atoms move from lateral layers to central bins of microchannel. Afterward, density of central layers of microchannel increases which is highlighted by sampling data after equilibrium condition of system energy in 4 time steps. It is concluded that augmentation of external driving forces on the Argon atoms from 0.002 to 0.01 and 0.02 eV/Angstrom can increase flow temperature from 180K to 1920K and 7570K, respectively which is noticeable for practical application such as medical especially in Cryosurgery. Moreover, augmentation of external forces can increase velocity profiles of Argon fluid flow. Generally, density was independent from variation of external force and boundary wall temperature in the studied limits. Also, alteration of boundary wall temperature does not play very important role on the velocity and temperature of Argon fluid inside microchannel.

Keywords: Microchannel; Boiling flow; Molecular dynamic simulation (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:548:y:2020:i:c:s0378437119321545

DOI: 10.1016/j.physa.2019.123879

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