Article
Materials Science, Coatings & Films
Yongang Zhang, Steve Matthews, Dongting Wu, Yong Zou
Summary: This study investigates the interactions between droplets in plasma spraying and their effects on the microstructure and bonding properties of the coating. Experimental characterization and numerical simulations reveal that the impact position and temperature of the droplets play a crucial role in the solidification behavior of the coating, affecting grain growth and pore formation.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Vishnu Teja Mantripragada, Krishanu Kumar, Pankaj Kumar, Sabita Sarkar
Summary: The study investigates the process of producing metal powders using a centrifugal atomizer through numerical simulation, validating the results with experimental measurements, and exploring different mechanisms of powder production. The impact of liquid slag properties on powder size distribution was studied using a mathematical model, and conclusions were drawn correlating powder size distribution with slag properties.
JOURNAL OF SUSTAINABLE METALLURGY
(2021)
Article
Engineering, Chemical
Yan Pang, Yao Lu, Qiang Zhou, Xiang Wang, Ju Wang, Mengqi Li, Zhaomiao Liu
Summary: The performance of emulsion droplets is determined by the size and dispersibility, which are controlled by the breakup characteristics of interfaces. This study investigates the breakup characteristics of interfaces under different flow rates by using a four-phase glass capillary device. The results show the distribution of different generation modes and the influence of inner droplets on the interfaces.
JOURNAL OF FOOD ENGINEERING
(2022)
Article
Thermodynamics
Akanksha Tiwari, Runa Samanta, Himadri Chattopadhyay
Summary: This paper reviews the research on droplet solidification over the past 20 years, with a focus on modelling strategies. The paper enumerates modelling approaches at macro, micro and meso-scales and presents the progress in understanding the physics of droplet solidification through literature results. Additionally, applications of droplet solidification in various fields are introduced.
APPLIED THERMAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Zhongquan Yu, Mingchao Chen, Chong Ma, Site Luo, Chundong Zhu
Summary: Double-roll rotary forging is a promising plastic forming technology for large diameter thin-walled disks due to its advantages, but there is limited research on the deformation characteristics and the influence of three key parameters.
Article
Green & Sustainable Science & Technology
Xuekui Niu, Minting Li, Hongbin Wang, Liping Ma, Shuting Wang, Tao Zhou, Wei Wang
Summary: Through an industrialized test with a co-treatment of LSS and zinc oxide ore in a rotary kiln, it was found that valuable metals can be effectively recovered and harmful elements can be solidified, providing an economical and feasible technical route for the treatment of historical LSS.
Article
Metallurgy & Metallurgical Engineering
Ri-jin Cheng, Hua Zhang, Yang Li, Qing Fang, Bao Wang, Hong-wei Ni
Summary: Dry centrifugal granulation method can granulate blast furnace slag, but the granulation results are easily affected by parameters such as slag flow rate, disk rotating speed, and material. The optimal parameters can produce round particles with a diameter of 3.43 mm.
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
(2021)
Article
Automation & Control Systems
Zhongquan Yu, Chundong Zhu, Mingchao Chen, Site Luo, Chong Ma
Summary: This study investigates the double-roll rotary forging technology of large-diameter thin-walled discs by establishing a 3D finite element model. The distribution of stress field and velocity field, as well as the impact of die preheating and initial workpiece size on uniformity and maximum axial load, were studied.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Peng Li, Shizhong Wei, Xianqing Lei, Lu Yang, Bo Sun
Summary: Centrifugal spray deposition forming technology, used in the preparation of near-net forming billets, reduces segregation and refines microstructures. The trajectory, velocity, heat transfer and solidification of metal droplets affect the shape and microstructure of the billet. A dynamic and heat transfer solidification model for liquid metal droplets in flight was established, analyzing the effect of centrifugal disc speed on droplet diameter, flight trajectory and velocity. The results showed consistency with previous research, with droplet diameter, superheat and other factors influencing heat transfer and solidification. The conclusions provide a theoretical basis for process parameter determination.
Article
Thermodynamics
Qingyang Meng, Majie Zhao, Yong Xu, Liangqi Zhang, Huangwei Zhang
Summary: In this study, the spray detonation in n-heptane droplet/vapour/air mixtures was simulated using the Eulerian-Lagrangian method. The effects of droplet diameter and liquid equivalence ratio on detonation propagation, structure, and dynamics were investigated. The results showed that the average detonation propagation speed exhibited a non-monotonic change with the liquid equivalence ratio and peaked at a higher ratio for larger droplets. The spray detonation structure was significantly influenced by the liquid fuel equivalence ratio and droplet diameter. The leading shock Mach number slightly decreased with droplet size. The spray detonation also exhibited pronounced unsteadiness, such as instantaneous or complete extinction, under high liquid equivalence ratio conditions.
COMBUSTION AND FLAME
(2023)
Article
Engineering, Marine
Howan Kim, Dev Ranmuthugala, Martin Renilson
Summary: During the early design stage of a submarine, it is important to accurately estimate the linear manoeuvring coefficients. This study focuses on determining the values of linear rotary coefficients for an axisymmetric underwater body as functions of Length to Diameter (L/D) ratio. Validated simulations were used to obtain forces and moments on the body. The developed expressions for the linear rotary coefficients can be used to size and locate appendages in the design stage.
JOURNAL OF MARINE SCIENCE AND TECHNOLOGY
(2023)
Article
Construction & Building Technology
Houqiang Wang, Zhixiang Liu, Tengfei Guo
Summary: Rock-mortar structures used in mines can be compromised by imperfect bonding between rock and mortar, leading to initial cracks at the interface. This study developed numerical models and conducted laboratory tests to understand how interface cracks affect fracture properties. The results showed that the peak load decreased with increasing length-to-diameter ratio and increased with increasing crack inclination angle.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Energy & Fuels
Shuilin Jiang, Huixin Yuan, Faqi Zhou, Shuangcheng Fu
Summary: The separation efficiency of the electrostatic-cyclone demister is significantly improved, especially for droplets smaller than 4 µm. The inlet velocity has an effect on the separation efficiency, but this effect is reduced by the coupling of the electrostatic and cyclonic fields.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2021)
Article
Construction & Building Technology
Wei-Jen Chen, Tun-Ping Teng
Summary: This study tested the impact of temperature-relative humidity sensor pair differences on system operation and proposed a compensation algorithm to reduce measurement errors. Experimental results showed that the compensation algorithm can significantly reduce humidity measurement errors.
BUILDING AND ENVIRONMENT
(2021)
Article
Engineering, Aerospace
Anjith Kumar, Srikrishna Sahu, T. Sundararajan
Summary: In this study, a novel rotary atomizer with micro-channel grooves is investigated using optical diagnostics. The atomization and spray characteristics are studied, focusing on the effects of air swirler orientation and injector rotational speed. Visualizations of the primary jet breakup process are performed, and the droplet size, number density, and velocity components are measured. The results show that the rotary injector has the potential to dynamically control the spray characteristics as per requirement.
AEROSPACE SCIENCE AND TECHNOLOGY
(2023)
Article
Thermodynamics
Hai Zhao, Puzhen Gao, Xiaochang Li, Ruifeng Tian, Hongyang Wei, Sichao Tan
Summary: This study numerically investigates the interaction between flow-induced vibration and forced convection heat transfer in a tube bundle. The results show that the impact of flow-induced vibration on heat transfer varies in different flow velocity regions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rohit Chintala, Jon Winkler, Sugirdhalakshmi Ramaraj, Xin Jin
Summary: The current state of fault detection and diagnosis for residential air-conditioning systems is expensive and not suitable for widespread implementation. This paper proposes a cost-effective solution by introducing an automated fault detection algorithm as a screening step before more expensive tests can be conducted. The algorithm uses home thermostats and local weather information to identify thermodynamic parameters and detect high-impact air-conditioning faults.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
A. Azimi, N. Basiri, M. Eslami
Summary: This paper presents a novel optimization algorithm for improving the water-film cooling system of photovoltaic panels, resulting in a significant increase in net energy generation.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Duc-Thuan Phung, Chin-Hsiang Cheng
Summary: In this study, a novel CFDMD model is used to analyze and investigate the behavior of thermal-lag engines (TLE). The study shows that the CFDMD model effectively captures the thermodynamic behavior of the working gas and the dynamic behavior of the engine mechanism. Additionally, the study explores the temporal evolution of engine speed and the influence of various parameters on shaft power and brake thermal efficiency. The research also reveals the existence of a thermal-lag phenomenon in TLE.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Haiying Yang, Yinjie Shen, Lin Li, Yichen Pan, Ping Yang
Summary: The purpose of this article is to find a measure to improve the interfacial thermal transfer of graphene/silicon heterojunction. Through molecular dynamics simulation, it is found that surface modification can significantly reduce the thermal resistance, thereby improving the thermal conductivity of the graphene/silicon interface.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Qiong Wu, Yancheng Wang, Haonan Zhou, Xingye Qiu, Deqing Mei
Summary: This article introduces a visible methanol steam reforming microreactor, which uses an optical crystal as an observation window and measures the reaction temperature in real-time using infrared thermography. The results show that under lower oxygen to carbon ratio conditions, the microreactor has a higher heating rate and a stable gradient in temperature distribution.
APPLIED THERMAL ENGINEERING
(2024)
Review
Thermodynamics
Giulia Manco, Umberto Tesio, Elisa Guelpa, Vittorio Verda
Summary: In the past decade, there has been a growing interest in studying energy systems for the combined management of power vectors. Most of the published works focus on finding the optimal design and operations of Multi Energy Systems (MES). However, for newcomers to this field, understanding how to achieve the desired optimization details while controlling computational expenses can be challenging and time-consuming. This paper presents a novel approach to analyzing the existing literature on MES, with the aim of guiding practical development of MES optimization. Through the discussion of six case studies, the authors provide a mathematical formulation as a reference for building the model and emphasize the impact of different aspects on the problem nature and solver selection. In addition, the paper also discusses the different approaches used in the literature for incorporating thermal networks and storage in the optimization of multi-energy systems.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xuepeng Yuan, Caiman Yan, Yunxian Huang, Yong Tang, Shiwei Zhang, Gong Chen
Summary: In this study, a multi-scale microgroove wick (MSMGW) was developed by laser irradiation, which demonstrated superior capillary performance. The surface morphology and performance of the wick were affected by laser scan pitch, laser power, repetition frequency, and scanning speed. The MSMGW showed optimal capillary performance in alumina material and DI water as the working fluid.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Maofei Mei, Feng Hu, Chong Han
Summary: This paper proposes an effective local search method based on detection of droplet boundaries for understanding the dynamic process of droplet growth during dropwise condensation. The method is validated by comparing with experimental data. The present simulation provides an effective approach to more accurately predict the nucleation site density in future studies.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rahul Kumar Sharma, Ashish Kumar, Dibakar Rakshit
Summary: The study explores the use of phase change materials (PCM) as a retrofit with Heating Ventilation and Air-conditioning systems (HVAC) to reduce energy consumption and improve air quality. By incorporating PCM with specific thickness and fin configurations, significant energy savings can be achieved in comparison to standard HVAC systems utilizing R134a. This research provides policymakers with energy-efficient and sustainable solutions for HVAC systems to combat climate change.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Zhenhua Ren, Xiangjin Meng, Xingang Qi, Hui Jin, Yunan Chen, Bin Chen, Liejin Guo
Summary: This paper investigates the heat transfer mechanism and factors influencing thermal radiation in the process of supercritical water gasification (SCWG) of coal, and proposes a comprehensive numerical model to simulate the process. Experimental validation results show that thermal radiation accounts for a significant proportion of the total heat exchange in the reactor and a large amount of radiant energy exists in the important spectral range of supercritical water. Enhancing radiative heat transfer can effectively increase the temperature of the reaction medium and the gasification rate.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Mauro Abela, Mauro Mameli, Sauro Filippeschi, Brent S. Taft
Summary: Pulsating Heat Pipes (PHP) are passive two-phase heat transfer devices with a simple structure and high heat transfer capabilities. The actual unpredictability of their dynamic behavior during startup and thermal crisis hinders their large-scale application. An experimental apparatus is designed to investigate these phenomena systematically. The results show that increasing the number of evaporator sections and condenser temperature improves the performance of PHP. The condenser temperature also affects the initial liquid phase distribution and startup time.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Ke Gan, Ruilian Li, Yi Zheng, Hui Xu, Ying Gao, Jiajie Qian, Ziming Wei, Bin Kong, Hong Zhang
Summary: A 3-dimensional enhanced heat pipe radiator has been developed to improve heat dissipation and temperature uniformity in cooling high-power electronic components. Experimental results show that the radiator has superior heat transfer performance compared to a conventional aluminum fin radiator under different heating powers and wind speed conditions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xinyi Zhang, Shuzhong Wang, Daihui Jiang, Zhiqiang Wu
Summary: This study focuses on recovering waste heat from blast furnace slag using dry centrifugal pelletizing technology. A comprehensive two-dimensional model was developed to analyze heat transfer dynamics and investigate factors influencing heat exchange efficiency. The findings have important implications for optimizing waste heat recovery and ensuring safe operations.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xincheng Wu, An Zou, Qiang Zhang, Zhaoguang Wang
Summary: The boosting heat generation rate of high-performance processors is challenging traditional cooling techniques. This study proposes a combined design of active jet intermittency and passive surface modification to enhance heat transfer.
APPLIED THERMAL ENGINEERING
(2024)