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The objective of this work is to investigate the coupling of fluid dynamics, heat transfer and mass transfer during the impact and evaporation of droplets on a heated solid substrate. A laser-based thermoreflectance method is used to…

流体动力学 · 物理学 2010-10-14 Rajneesh Bhardwaj , Jon P. Longtin , Daniel Attinger

We study heat transfer in plane Couette flow laden with rigid spherical particles by means of direct numerical simulations using a direct-forcing immersed boundary method to account for the dispersed phase. A volume of fluid approach is…

流体动力学 · 物理学 2016-11-08 Mehdi Niazi Ardekani , Omid Abouali , Francesco Picano , Luca Brandt

The heat transfer characteristics of thin film flow over a hot sphere resulting from a cold vertical jet of liquid falling onto the surface has been investigated. The underlying physical features have been illustrated by numerical solutions…

流体动力学 · 物理学 2014-03-10 Jian-Jun Shu , Graham Wilks

This work proposes an extensive review of laminar and turbulent forced convective heat transfer correlations inside tubes by analyzing both experimental and computational research. Convective heat transfer is influenced by fluid turbulence…

流体动力学 · 物理学 2024-01-09 Gubran A. Q. Abdulrahman , Sultan M. Alharbi

Buoyancy effect on low-flow condition convective heat transfer of non-conventional coolants, such as liquid metal and molten salts, is a crucial safety factor to advanced reactors under transient or accidental scenarios. The distinct heat…

流体动力学 · 物理学 2022-04-04 Cheng-Kai Tai , Tri Nguyen , Arsen S. Iskhakov , Elia Merzari , Nam Dinh , Igor A. Bolotnov

In this article, we demonstrate the phenomenon of thermal transpiration in a bounded convex domain. We employ the stationary Boltzmann equation with a cutoff potential. For boundary condition, we partition the boundary into diffuse…

偏微分方程分析 · 数学 2026-03-23 Kai-Li Wang , I-Kun Chen

Limited surface observations of turbulent heat fluxes result in incomplete knowledge about the surface energy balance that drives the climate system. Here, we developed a novel, purely physics-based analytical method grounded on the…

大气与海洋物理 · 物理学 2022-10-12 Mayank Gupta , Martin Wild , Subimal Ghosh

We construct the heat kernel on curvilinear polygonal domains in arbitrary surfaces for Dirichlet, Neumann, and Robin boundary conditions as well as mixed problems, including those of Zaremba type. We compute the short time asymptotic…

偏微分方程分析 · 数学 2025-03-27 Medet Nursultanov , Julie Rowlett , David A. Sher

We present a novel kernel regression framework for smoothing scalar surface data using the Laplace-Beltrami eigenfunctions. Starting with the heat kernel constructed from the eigenfunctions, we formulate a new bivariate kernel regression…

计算机视觉与模式识别 · 计算机科学 2016-06-30 Moo K. Chung , Anqi Qiu , Seongho Seo , Houri K. Vorperian

This paper introduces a Bayesian inference framework for two-dimensional steady-state heat conduction, focusing on the estimation of unknown distributed heat sources in a thermally-conducting medium with uniform conductivity. The goal is to…

应用统计 · 统计学 2024-05-07 Hanieh Mousavi , Jeff D. Eldredge

We present a model for nonlocal diffusion with Neumann boundary conditions in a bounded smooth domain prescribing the flux through the boundary. We study the limit of this family of nonlocal diffusion operators when a rescaling parameter…

偏微分方程分析 · 数学 2007-05-23 C. Cortazar , M. Elgueta , J. D. Rossi , N. Wolanski

Ultrafast and nanoscale heat conduction demands a unified theoretical framework that rigorously bridges macroscopic transport equations with microscopic material properties derived from statistical physics.Existing empirical generalizations…

材料科学 · 物理学 2025-09-08 David E. Crawford , Yi Zeng , Judith Vidal , Jianjun Dong

We present highly resolved measurements of the near-wall temperature field in thermally driven convection at a rough surface. Our measurements have been undertaken in a very large experimental facility called the "Barrel of Ilmenau". They…

流体动力学 · 物理学 2018-04-17 Ronald du Puits , Alice Loesch , Julien Salort , Francesca Chillà

We develop a two-fluid model (TFM) for heat transfer in dense non-Brownian suspensions. Specifically, we propose closure relations for the inter-phase heat transfer coefficient and the thermal diffusivity of the particle phase based on…

流体动力学 · 物理学 2021-11-05 Pranay P. Nagrani , Federico Municchi , Amy M. Marconnet , Ivan C. Christov

We present an innovative contactless method suitable to study in-plane thermal transport based on beam-offset frequency-domain thermoreflectance using a one-dimensional heat source with uniform power distribution. Using a one-dimensional…

This work addresses the conjugate heat transfer of a simplified PTT fluid flowing past an unbounded sphere in the Stokes regime ($Re = 0.01$). The problem is numerically solved with the finite-volume method assuming axial symmetry, absence…

流体动力学 · 物理学 2021-04-14 F. Pimenta , M. A. Alves

A good understanding of the heat transfer in fused filament fabrication is crucial for an accurate stress prediction and subsequently for repetitive, high quality printing. This work focuses on two challenges that have been presented when…

数值分析 · 数学 2023-05-09 Nathalie Ramos , Christoph Mittermeier , Josef Kiendl

Horizontally extended plane-layer convection flows are characterized by characteristic patterns of turbulent heat transfer due to the convective fluid motion consisting of a nearly-regular ridge network where hot fluid rises and cold fluid…

流体动力学 · 物理学 2025-10-08 Aleksandar Badza , Gary Froyland , Roshan J. Samuel , Jörg Schumacher

This paper investigates the numerical modeling of a time-dependent heat transmission problem by the convolution quadrature boundary element method. It introduces the latest theoretical development into the error analysis of the numerical…

数值分析 · 数学 2017-11-08 Tianyu Qiu , Alexander Rieder , Francisco-Javier Sayas , Shougui Zhang

We numerically investigate turbulent Rayleigh-B\'enard convection within two immiscible fluid layers, aiming to understand how the layer thickness and fluid properties affect the heat transfer (characterized by the Nusselt number $Nu$) in…

流体动力学 · 物理学 2022-05-24 Hao-Ran Liu , Kai Leong Chong , Rui Yang , Roberto Verzicco , Detlef Lohse