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Dergiler / Sakarya University Journal of Science / 2022 / Cilt: 26 Sayı: 4

Transition Gas Flow Between Two Parallel Plates with a Slit-Type Obstacle of Various Geometry by Event Driven Molecular Dynamics Simulation

Mustafa KOÇ
İlyas KANDEMİR
Volkan Ramazan AKKAYA
Sayfa
720–744
Yayın Tarihi
2022-08-31
DOI
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

Some of the results obtained were confirmed to be consistent with the similar studies in the literature.

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Amaç & Hipotez:In this study, pressure-driven flow through a slit-type obstacle with various length (L) and height (H) placed in between two parallel plates was investigated by Event Driven Molecular Dynamics (EDMD) simulation.
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Temel Bulgular & Veri:The change in these macroscopic properties and flow rate were examined for different cases created by changing Knudsen number (Kn) of the gas, the geometry of the slit and the outlet/inlet pressure ratio of the flow.
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Sonuç & Katkı:Some of the results obtained were confirmed to be consistent with the similar studies in the literature.
🔬Tür:Modelleme & Sayısal Simülasyon
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Event Driven Molecular Dynamic Simulation · Knudsen Number · Slit Flow

Abstract

In this study, pressure-driven flow through a slit-type obstacle with various length (L) and height (H) placed in between two parallel plates was investigated by Event Driven Molecular Dynamics (EDMD) simulation. Mach number, temperature and pressure distributions were obtained along the channel in the transition regime. The change in these macroscopic properties and flow rate were examined for different cases created by changing Knudsen number (Kn) of the gas, the geometry of the slit and the outlet/inlet pressure ratio of the flow. Collision of gas molecules with plates and the obstacle were modeled with diffuse reflection boundary condition. The flow rate showed a sudden change in the transition regime and significant differences in the molecular regime depending on the pressure ratio. Except for the Kn, H and L dimensions were found to be effective in Mach disc formation. Pressure drops at the exit of the slit were shaped differently in normalized pressure profiles depending on Kn, H and L dimensions. In addition, the structure of the vortices formed at the entrance and exit of the slit varies depending on Kn. Some of the results obtained were confirmed to be consistent with the similar studies in the literature.

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Bu Makaleye Atıf Yap

KOÇ, M., KANDEMİR, İ., AKKAYA, V. R. (2022). Transition Gas Flow Between Two Parallel Plates with a Slit-Type Obstacle of Various Geometry by Event Driven Molecular Dynamics Simulation. Sakarya University Journal of Science, Cilt: 26 Sayı: 4, 720–744. https://ajindex.com/articles/941242

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Kaynakça (16)

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