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In the study, the evaporation of ethanol-water binary mixture within heated capillary is experimentally and numerically investigated. It was found that the ratio of the evaporation rates of ethanol and water equals the ratio of their…

流体动力学 · 物理学 2024-01-17 Jialing Yu , Zhenhai Pan

Dynamics of ethylene autoignition and Deflagration-to-Detonation Transition (DDT) in a one-dimensional shock tube are numerically investigated using a skeletal chemistry including 10 species and 10 reactions. Different combustion modes are…

流体动力学 · 物理学 2022-08-24 Zhiwei Huang , Huangwei Zhang

Flare ribbons form when energy released by coronal magnetic reconnection is deposited in the low solar atmosphere, so by studying the dynamics of flare ribbons, one obtains an indirect measurement of reconnection. Our aim is to quantify the…

太阳与恒星天体物理 · 物理学 2026-05-13 Hannah Collier , Säm Krucker , Laura A. Hayes , Emil Kraaikamp , David Berghmans , Daniel F. Ryan

Droplet vaporization has a great impact on combustion of liquid fuels and might greatly affects the engine performance. Physical understanding and theoretical interpretation of the droplet vaporization behavior are decisive to constitute…

流体动力学 · 物理学 2020-06-30 Dehai Yu , Zheng Chen

The realization that interfacial features play little role in diesel spray vaporization and advection has changed the modus operandi for spray modeling. Lagrangian particle tracking has typically been focused on droplet behavior, with…

The gasification of multicomponent fuel drops is relevant in various energy-related technologies. An interesting phenomenon associated with this process is the self-induced explosion of the drop, producing a multitude of smaller secondary…

流体动力学 · 物理学 2021-01-29 Sijia Lyu , Huanshu Tan , Yuki Wakata , Xianjun Yang , Chung K. Law , Detlef Lohse , Chao Sun

Droplets collide in several complex spray environments ranging from sea sprays to combustion chambers, altering their size and velocity characteristics. The present work offers a systematic investigation of such collisions within the…

流体动力学 · 物理学 2025-11-12 Narendra Dev , Varun Kulkarni , Sivakumar Deivandren

In the present work, Jet A-Hexane binary fuel droplet impact dynamics on heated solid surfaces were studied numerically. This study is crucial for practical applications such as fuel injection in combustors and thermal management of engine…

流体动力学 · 物理学 2025-09-17 Arghya Paul , Kanak Raj , Pratim Kumar

Electrospray thrusters promise compact, high specific impulse propulsion for small spacecraft, yet ground characterization remains confounded by secondary species emission and incomplete diagnostics of neutral products. To address these…

化学物理 · 物理学 2025-12-24 Nicholas Laws , Elaine Petro

The present work focuses on the large eddy simulation (LES) and the study of turbulent dilute methanol spray flames in vitiated coflow using the secondary oxidizer Flamelet Generated Model (FGM). The modified FGM model uses an additional…

流体动力学 · 物理学 2022-08-25 Bharat Bhatia , Ashoke De , Dirk Roekaerts , Assaad R. Masri

In this paper we formulate and analyze an elementary model for the propagation of advancing autoignition fronts in reactive co-flow fuel/oxidizer jets injected into an aqueous environment at high pressure. This work is motivated by the…

流体动力学 · 物理学 2024-02-27 Amanda Matson , Michael C. Hicks , Uday G. Hegde , Peter V. Gordon

This study investigates the dispersion and self-sorting dynamics of bidisperse particles, i.e., a mixture of two distinct particle sizes, during the evaporation of ethanol droplets on a heated substrate, focusing on the influence of surface…

流体动力学 · 物理学 2025-04-24 Aman Kumar Jain , Fabian Denner , Berend van Wachem

Extinction strain rate (ESR) and laminar flame speed (LFS) are fundamental properties of a fuel/air mixture that are often utilized as scaling parameters in turbulent combustion. While LFS at atmospheric and elevated pressures are…

流体动力学 · 物理学 2020-07-07 Weiqi Ji , Tianwei Yang , Zhuyin Ren , Sili Deng

Eulerian-Lagrangian simulations are conducted for two-dimensional Rotating Detonative Combustion (RDC) fueled by partially prevaporized n-heptane sprays. The influences of droplet diameter and total equivalence ratio on detonation…

流体动力学 · 物理学 2020-11-25 Majie Zhao , Huangwei Zhang

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

The present study is devoted to the detailed numerical analysis of the combustion waves propagation through the lean hydrogen-air mixtures with suspended micro-droplets of water. Considered gaseous mixtures are characterized by a relatively…

流体动力学 · 物理学 2019-09-20 I. S. Yakovenko , A. D. Kiverin

Detonation-based propulsion devices, such as rotating detonation engines (RDEs), must be able to leverage the higher energy densities of liquid fuels in order for them to be utilized in practical contexts. This necessitates a comprehensive…

流体动力学 · 物理学 2025-12-18 Michael Ullman , Ral Bielawski , Venkat Raman

The present investigation deals with the puffing and micro-explosion characteristics in the combustion of a single droplet comprising butanol/Jet A-1, acetone-butanol-ethanol (A-B-E)/Jet A-1 blends, and A-B-E. The onset of nucleation,…

流体动力学 · 物理学 2017-07-10 D. Chaitanya Kumar Rao , Srinibas Karmakar , S. K. Som

In this short Letter, the structure of a rotating detonation wave (RDW) fueled by biofuel is revealed and expounded. The simulation is carried out under an Eulerian-Lagrangian framework in which the main characteristics of the two-phase RDW…

流体动力学 · 物理学 2023-05-02 Songbai Yao , Xinmeng Tang , Wenwu Zhang

A time-lag and linear regression-based framework is developed and its performance is assessed for predicting temporally resolved spray number of droplets using flame chemiluminescence and a sparse number of droplets data. Separate pressure,…

流体动力学 · 物理学 2022-12-13 Liam Krebbers , Sajjad Mohammadnejad , Ali Rostami , Sina Kheirkhah