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Three-dimensional laminar flow structures with mixing, chemical reaction, normal strain, and shear strain qualitatively representative of turbulent combustion at the small scales are analyzed. A mixing layer is subjected to counterflow in…

流体动力学 · 物理学 2020-12-16 William A. Sirignano

An interface-resolved simulation of the combustion of a fuel droplet suspended in normal gravity is presented in this work, followed by an extensive analysis on the physical aspects involved. The modeling is based on DropletSMOKE++, a…

计算工程、金融与科学 · 计算机科学 2020-11-10 Abd Essamade Saufi , Alessio Frassoldati , Tiziano Faravelli , Alberto Cuoci

Design of efficient, downsized piston engines requires an understanding of transient wall heat losses. Measurements of the spatially and temporally evolving thermal boundary layer (TBL) are required to facilitate this knowledge. This work…

流体动力学 · 物理学 2021-08-19 Anthony O. Ojo , David Escofet-Martin , Joshua Collins , Gabriele Falconetti , Brian Peterson

This paper presents new results which may constitute a breakthrough in the effort to develop fuel cells truly suitable for use in cars and trucks. For decades, researchers have known that the alkaline fuel cell (AFC) is much cheaper to…

化学物理 · 物理学 2007-05-23 Mirna Urquidi-Macdonald , Ayusman Sen , Patrick Grimes , Ashutosh Tewari , Varun Sambhy

This work presents an experimental study of a nanosecond repetitively pulsed dielectric barrier discharge interacting with a transient laminar flame propagating in a channel of height near the quenching distance of the flame. The discharge…

等离子体物理 · 物理学 2022-12-07 Colin A. Pavan , Carmen Guerra-Garcia

The energy balance of a plasma holds fundamental information not only about basic plasma physics, but it is also important for tailoring plasmas to specific applications. Especially RF-driven atmospheric pressure plasma jets (APPJs)…

等离子体物理 · 物理学 2021-02-25 Tristan Winzer , Natascha Blosczyk , Jan Benedikt , Judith Golda

Butanol has received significant research attention as a second-generation biofuel in the past few years. In the present study, skeletal mechanisms for four butanol isomers were generated from two widely accepted, well-validated detailed…

化学物理 · 物理学 2017-06-08 Xin Hui , Kyle E. Niemeyer , Kyle B. Brady , Chih-Jen Sung

The temperature is a central parameter affecting the chemical and physical properties of dense cores of interstellar clouds and their evolution to star formation. The chemistry and the dust properties are temperature dependent and the…

星系天体物理 · 物理学 2015-06-03 M. Juvela , J. Harju , N. Ysard , T. Lunttila

In this contribution, we develop a model based on classical electrodynamics that describes light extinction in the presence of arbitrary aerosols. We do this by combining aerosol and light-intensity measurements performed with the…

. Plasma jets are a high temperature flows, then all physical parameters are temperature dependent. This work aims to address the issue of simulating plasma-jet from the point of view of extending the applications to simulating flows with…

材料科学 · 物理学 2011-02-24 Rhida Djebeli , Bernard Pateyron , Mohamed Elganaoui , Habib Sammouda

The effect of thermal annealing on wurtzite ZnO, terminated by two surfaces, (0 0 0 $\bar 1$) (which is oxygen-terminated) and (0 0 0 1) (which is Zn-terminated), is investigated via molecular dynamics simulation using reactive force field…

材料科学 · 物理学 2017-03-07 Tjun Kit Min , Tiem Leong Yoon , Chuo Ann Ling , Shahrom Mahmud , Thong Leng Lim , Kim Guan Saw

A one dimensional (1-D), isothermal model for a direct methanol fuel cell (DMFC) is presented. This model accounts for the kinetics of the multi-step methanol oxidation reaction at the anode. Diffusion and crossover of methanol are modeled…

化学物理 · 物理学 2020-03-10 Brenda L. Garcia , Vijay A. Sethuraman , John W. Weidner , Roger Dougal , Ralph E. White

Methanol masers at 6.7 GHz are known to be tracers of high-mass star formation in our Galaxy. In this paper, we study the large scale physical conditions in the star forming clumps/cores associated with 6.7 GHz methanol masers using…

太阳与恒星天体物理 · 物理学 2015-06-05 J. D. Pandian , F. Wyrowski , K. M. Menten

Turbulent mixing layers (TMLs) are ubiquitous in multiphase gas. They can potentially explain observations of high ions such as O VI, which have significant observed column densities despite short cooling times. Previously, we showed that…

星系天体物理 · 物理学 2021-09-01 Brent Tan , S. Peng Oh

Numerical qualification of an eco-friendly alternative gas mixture for avalanche mode operation of Resistive Plate Chambers is the soul of this work. To identify the gas mixture, a numerical model developed elsewhere by the authors has been…

仪器与探测器 · 物理学 2021-08-11 Jaydeep Datta , Sridhar Tripathy , Nayana Majumdar , Supratik Mukhopadhyay

Our series of articles is devoted to high-precision molecular dynamics simulation of mixed actinide-oxide (MOX) fuel in the approximation of rigid ions and pair interactions (RIPI) using high-performance graphics processors (GPU). In this…

材料科学 · 物理学 2015-03-13 S. I. Potashnikov , A. S. Boyarchenkov , K. A. Nekrasov , A. Ya. Kupryazhkin

The surface of a thin liquid film with nonconstant curvature is unstable, as the Laplace pressure drives a flow mediated by viscosity. We present the results of experiments on one of the simplest variable curvature surfaces: a stepped…

软凝聚态物质 · 物理学 2015-06-11 Joshua D. McGraw , Thomas Salez , Oliver Bäumchen , Elie Raphaël , Kari Dalnoki-Veress

We present several numerical results on granular mixtures. In particular, we examine the efficiency of diffusion as a mixing mechanism in these systems. The collisions are inelastic and to compensate the energy loss, we thermalize the…

统计力学 · 物理学 2009-10-31 C. Henrique , G. Batrouni , D. Bideau

Nighttime monitoring of the aerosol content of the lower atmosphere is a challenging task, because appropriate reference natural light sources are lacking. Here we show that the anthropogenic night sky brightness due to city lights can be…

天体物理仪器与方法 · 物理学 2020-11-18 Miroslav Kocifaj , Salvador Bará

The precise control and knowledge over the atomic dynamics is central to the advancement of quantum technology. The different experimental conditions namely, atoms in a vacuum, an anti-relaxation coated and a buffer gas filled atomic cell…

原子物理 · 物理学 2022-07-21 Swarupananda Pradhan , Saptarshi Roy Chowdhury