Surface Topography Effects on Pool Boiling via Non-equilibrium Molecular Dynamics Simulations

نویسندگان

چکیده

In this work, we investigate nucleate pool boiling via non-equilibrium molecular dynamics simulations. The effect of nano-structured surface topography on nucleation and transition to a film-like regime is studied at the scale, by varying cavity aspect ratio, wall superheat, wettability through systematic parametric analysis conducted Lennard-Jones (LJ) system. interplay aforementioned factors rationalized means classical theory-based model. solid heated uniformly from bottom in order induce nanobubble nucleation. Insight into behavior heat transfer problems achieved looking temperature flux profiles inside itself, as well time nucleation, for different operating conditions. role size controlling vapor embryo formation highlighted, its dependence other investigated parameters summarized phase diagram. Our results show that heterogeneity nanoscale plays key determining performance, suggesting promising approach optimize nanostructured surfaces energy thermal management applications.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

On multiscale non-equilibrium molecular dynamics simulations

In this work, we set forth a multiscale non-equilibrium molecular dynamics (MS-NEMD) model. The main objectives of MS-NEMD model are: (1) establishing a rigorous NEMD that provides direct threedimensional simulations of thermal–mechanical motions at atomistic scale, and (2) providing a general computational paradigm for non-equilibrium multiscale simulations. The proposed MS-NEMD combines a coa...

متن کامل

Non-equilibrium Molecular Dynamics

Statistical mechanics provides a well-established link between microscopic equilibrium states and thermodynamics. If one considers systems out of equilibrium, the link between microscopic dynamical properties and nonequilibrium macroscopic states is more difficult to establish [1,2]. For systems lying near equilibrium, linear response theory provides a route to derive linear macroscopic laws an...

متن کامل

Dynamical Non-Equilibrium Molecular Dynamics

In this review, we discuss the Dynamical approach to Non-Equilibrium Molecular Dynamics (D-NEMD), which extends stationary NEMD to time-dependent situations, be they responses or relaxations. Based on the original Onsager regression hypothesis, implemented in the nineteen-seventies by Ciccotti, Jacucci and MacDonald, the approach permits one to separate the problem of dynamical evolution from t...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Langmuir

سال: 2021

ISSN: ['1520-5827', '0743-7463']

DOI: https://doi.org/10.1021/acs.langmuir.1c00779