Article
Thermodynamics
Ji-Xiang Wang, Yun-Ze Li, Ming-Liang Zhong, Hong-Sheng Zhang
Summary: The study investigates the application of gas-atomized spray cooling technology in electronics cooling, validates its advantages in improving the heat transfer coefficient through experimental data, and provides a mechanism explanation.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Thermodynamics
S. Hatte, R. Pitchumani
Summary: An analytical model is developed in this study for structured non-wetting surfaces, which provides optimal design maps for maximizing convective heat transfer and thermal-hydraulic performance in fluid flow over cylinder surfaces. It is found that structured non-wetting surfaces are most effective for low Reynolds numbers and small cylinder radii.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Nanoscience & Nanotechnology
Byungseok Yoo, David Bowen, Nathan Lazarus, Darryll Pines
Summary: This research successfully demonstrated the fabrication of circuits using superflexible biocompatible silicone and laser direct structuring process. By adjusting the laser power and copper chromite concentration, the material stiffness and trace peel strength can be increased.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Asif Ur Rehman, Muhammad Ahsan Saleem, Tingting Liu, Kai Zhang, Fatih Pitir, Metin Uymaz Salamci
Summary: This research presents a slurry-based approach to fabricate ceramic components, which is an alternative to the traditional powder bed selective laser process (PBSLP). The study found that a high SiC content leads to chemical interaction that disrupts the melt pool and affects the sintering and melting quality. The analysis of the microstructure shows that the weight fraction of SiC has a significant impact on it, and a content lower than 2wt% leads to improved microstructure during the PBSLP process.
Article
Automation & Control Systems
Diana Marisa Monteiro Faria, Bruno Alexandre Pacheco de Castro Henriques, Anne Caroline Bernardes De Souza, Filipe Samuel Correia Pereira da Silva, Oscar Samuel Novais Carvalho
Summary: This study explored a new design for implants surface functionalization through the manufacture of 45S5 Bioglass-coated zirconia structured surfaces using a hybrid laser technique. The results showed promising outcomes in terms of morphology, bioactivity preservation, surface wettability, friction performance, and mechanical resistance of zirconia. The synergistic effect of physical and chemical changes on the zirconia surface with advanced laser methods seems to be a promising approach for producing implants with enhanced bioactivity.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Manufacturing
Hanyu Song, Weidong Liu, Benxin Wu
Summary: Short pulse duration lasers, such as those with nanosecond scale durations, have potential advantages in terms of good spatial resolutions and small heat-affected zones. Previous research on selective laser sintering with nanosecond lasers has been limited, and this paper presents physics-based modeling work for plasma generated by nanosecond-pulsed laser interaction with a metallic micro powder bed. The modeling results are in good agreement with the experimental data, supporting the hypothesis that the plasma can be properly described by solving gas dynamic equations in the gaseous phase and heat transfer equation in the powder bed condensed phase.
ADDITIVE MANUFACTURING
(2022)
Article
Engineering, Electrical & Electronic
Vladislav A. Oleshchenko, Alexander Uskov, Victor V. Bezotosnyi
Summary: A new approach for cooling Laser Diode Arrays (LDAs) is proposed in this study, where a coolant is used to remove heat directly from the Laser Diode Bars (LDBs) in the LDA. Simulation results demonstrate that this cooling method can achieve an output optical power density of about 20 kW/cm(2) in continuous wave operation mode, and maintaining a turbulent flow of the coolant can improve the cooling efficiency and output characteristics of the device.
IEEE JOURNAL OF QUANTUM ELECTRONICS
(2022)
Article
Engineering, Industrial
Simon S. Park, Robin Jeong, Jihyun Lee, Pinak Bhatt
Summary: Directly written circuits on polymeric housings offer weight reduction and enhanced flexibility in automotive and aerospace parts. A hybrid copper-based ink with self-healing capabilities has been developed to maintain electrical conductivity after deformations. The new generation devices utilizing printable hybrid copper-based ink can be sintered and healed within milliseconds using intense pulsed light (IPL).
CIRP ANNALS-MANUFACTURING TECHNOLOGY
(2022)
Article
Optics
Hanyu Song, Mengchen Wu, Weidong Liu, Benxin Wu
Summary: This paper develops a thermal model for nanosecond laser irradiation of a powder bed of micro metal particles and validates the model through in-situ transient temperature measurements. The results show that nanosecond laser pulses can induce significant thermal accumulation effect in a metal powder bed and have the potential advantage of adjustability and flexibility in laser sintering, but parameter selection is challenging due to complicated parameter-thermal response relations.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Engineering, Multidisciplinary
Joerg Volpp
Summary: Laser light absorption is a fundamental effect in laser material processing, and plays a crucial role in calculating process efficiency and predicting material impact. However, measuring absorption can be challenging, especially at high temperatures where limited experimental data is available. To improve theoretical models, this study proposes a radiometric measurement method using a heating laser to create a metal melt pool, while measuring temperature and reflection using a second laser beam. Measurements confirmed general tendencies but showed scattered absorption values at increasing temperatures. An increase in absorption between melting and boiling temperatures (35% to 38%) suggests the need to consider both interband and intraband absorption mechanisms in this regime. At higher temperatures, intraband absorption becomes the dominant mechanism, reaching absorption values above 45%.
Review
Materials Science, Ceramics
Stefan Pfeiffer, Kevin Florio, Dario Puccio, Marco Grasso, Bianca Maria Colosimo, Christos G. Aneziris, Konrad Wegener, Thomas Graule
Summary: Laser additive manufacturing (LAM) of ceramics faces challenges due to low thermal shock resistance, weak densification, and low light absorptance at room temperature. Further research is needed to improve accuracy and mechanical strength, enabling LAM of oxide ceramics to enter new fields of application.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Bujingda Zheng, Ganggang Zhao, Zheng Yan, Yunchao Xie, Jian Lin
Summary: 3D conformable electronic devices on freeform surfaces have superior performance and have witnessed exponential growth in various applications. However, their potential is limited by a lack of advanced fabrication techniques. To overcome this challenge, a new direct freeform laser fabrication method for directly fabricating 3D conformable electronics on targeted arbitrary surfaces is reported.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Thermodynamics
Johannes Kohler Mendizabal, Mahsa Montazeri, David Huitink, Nenad Miljkovic
Summary: The power densification of magnetic converters is hindered by the ineffective heat removal. The existing thermal management technologies for PCB transformers have limitations in improving overall thermal conductance and reducing temperature gradients. Direct liquid cooling technique reduces thermal resistances and temperature gradients. The choice between Novec 7300 and ethylene glycol depends on flow rate, pressure drop, and pumping power.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
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)
Article
Physics, Multidisciplinary
S. F. Vazquez-Carson, Q. Sun, J. Dai, D. Mitra, T. Zelevinsky
Summary: We demonstrate optical cycling and laser cooling of a cryogenic buffer-gas beam of calcium monohydride (CaH) molecules. We measure vibrational branching ratios for laser cooling transitions and successfully lower the transverse temperature of a molecular beam of CaH. This work provides a clear pathway for the production of ultracold hydrogen gas.
NEW JOURNAL OF PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Francesco Maria Bellussi, Otello Maria Roscioni, Edoardo Rossi, Annalisa Cardellini, Marina Provenzano, Luca Persichetti, Valeriya Kudryavtseva, Gleb Sukhorukov, Pietro Asinari, Marco Sebastiani, Matteo Fasano
Summary: The wetting properties of soft interfaces with different liquids are challenging to predict in surface engineering. In this article, a molecular dynamics simulations-based workflow is proposed to predict the wettability of polymer surfaces and tested against experimental contact angles of several liquids. The results show a discrepancy of less than 3% for water. This work represents the initial step towards predicting the wettability of more complex soft interfaces using an integrated multiscale framework.
Article
Automation & Control Systems
Vincenza Mercurio, Flaviana Calignano, Luca Iuliano
Summary: Laser powder bed fusion (L-PBF) is an additive manufacturing technology that produces complex and lightweight parts without specific tooling. However, its use in mass production is limited by problems such as low productivity, high material consumption, and quality issues. This study presents good practices to reduce resource consumption and increase production rate using L-PBF. By analyzing process parameters and observing samples with non-destructive testing, the study provides insights into improving density and mechanical properties while maintaining surface roughness.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Chemistry, Physical
Letizia Aghemo, Luca Lavagna, Eliodoro Chiavazzo, Matteo Pavese
Summary: To expand the application scope of renewable energy, the development of storage systems is essential. Sorption thermal energy storage (STES) has gained interest for long-term thermal energy storage. This study provides a comprehensive review of existing sorbent-sorbate pairs, with a focus on their costs.
ENERGY STORAGE MATERIALS
(2023)
Editorial Material
Green & Sustainable Science & Technology
Eliodoro Chiavazzo
Summary: A study examines the effects of afforestation enabled by desalination plants using renewable electricity on the environment and the economy.
NATURE SUSTAINABILITY
(2023)
Article
Materials Science, Multidisciplinary
D. Bruson, M. Galati, F. Calignano, L. Iuliano
Summary: This study proposes a novel approach to obtain a specimen with a gradation of lattice density, which can achieve uniform stress distribution. It is found that the elongation at break in different lattice structures is only 50% of the corresponding bulk material. Therefore, the relationship between process, design, and material is crucial for accurately representing the behavior of polymeric lattice structures.
EXPERIMENTAL MECHANICS
(2023)
Article
Multidisciplinary Sciences
Sachit Mishra, Rajat Srivastava, Atta Muhammad, Amit Amit, Eliodoro Chiavazzo, Matteo Fasano, Pietro Asinari
Summary: Machine Learning (ML) algorithms were used to determine the impact of various physicochemical properties of carbon-based materials on the capacitive performance of supercapacitors. The specific surface area, nitrogen doping, and potential window were found to be the most significant descriptors for specific capacitance. This study provides a modular and open-source application for estimating supercapacitor capacitance based on the features of carbon-based electrodes, electrolyte, and testing method.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Manufacturing
Manuela Galati, Paolo Antonioni, Flaviana Calignano, Eleonora Atzeni
Summary: Additive manufacturing technologies for metallic materials enable the production of high-performance components with optimized weight, geometry, and mechanical properties. However, post-processing operations are necessary, including part removal from the build platform, which must be performed quickly, accurately, and with a smooth surface finish. This study investigates the wire electric discharge machining (W-EDM) process for Ti6Al4V specimens produced by AM technologies and analyzes the influence of cutting parameters compared to those of conventional technology. Models of cutting speed and surface roughness are derived from collected data, highlighting the significance of the manufacturing process in defining surface roughness and the key parameters affecting machining performance.
JOURNAL OF MANUFACTURING AND MATERIALS PROCESSING
(2023)
Review
Energy & Fuels
Assunta Andreozzi, Pietro Asinari, Antonio Barletta, Vincenzo Bianco, Johan Augusto Bocanegra, Pedro Vayssiere Brandao, Bernardo Buonomo, Roberta Cappabianca, Michele Celli, Eliodoro Chiavazzo, Paolo De Angelis, Andrea Diani, Sauro Filippeschi, Marcello Iasiello, Oronzio Manca, Sergio Nardini, Carlo Nonino, Luisa Rossetto
Summary: In the past decade, innovative methods for the design of heating, cooling, and heat storage devices have focused on the use of nanofluids, metal foams, and phase change materials (PCMs). A network of nine Italian universities has achieved significant results by collaboratively researching and evaluating the enhancement in heat transfer and thermal performance through the combined use of these materials.
Review
Energy & Fuels
Roberta Cappabianca, Paolo De Angelis, Matteo Fasano, Eliodoro Chiavazzo, Pietro Asinari
Summary: The nature of the electrode-electrolyte interface has a significant impact on the performance and durability of lithium-ion batteries (LIBs). The formation and growth of the solid electrolyte interphase (SEI) layer at the anode-electrolyte interface play a crucial role in maintaining the electrochemical stability of the battery. However, the growth of the SEI layer can lead to irreversible battery capacity fade. This article provides an overview of current computational efforts to study lithium ion transport within the SEI, ranging from electronic/atomistic scale simulations to macroscopic models, and highlights the need for new multiscale models to improve our understanding of this important transport phenomenon.
Article
Materials Science, Multidisciplinary
Marina Provenzano, Francesco Maria Bellussi, Matteo Morciano, Edoardo Rossi, Mario Schleyer, Pietro Asinari, Thomas Straub, Marco Sebastiani, Matteo Fasano
Summary: Surfaces with tailored wettability have gained significant attention for their various potential applications. Traditional theories are insufficient in describing intermediate and metastable states, leading to a lack of comprehensive understanding of the combined chemical and morphological effects on surface wettability. This study proposes a numerical method based on the phase-field model to predict and assist in the design of micro-structured surfaces with desired wettability. The validated model can aid in the design and prototyping of surfaces with tailored wettability, representing the final step of a predictive multi-scale model.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Atta Muhammad, Carlos Saenz Ezquerro, Rajat Srivastava, Pietro Asinari, Manuel Laspalas, Agustin Chiminelli, Matteo Fasano
Summary: This research presents a multiscale model for determining the thermophysical properties of nanofiller-enhanced thermoset polymer composites. By analyzing the properties of an epoxy resin containing bisphenol-A diglyceryl ether as the epoxy monomer and cross-linking agents, we developed a coarse-grained molecular dynamics model that accurately reproduces their thermophysical properties. Furthermore, we simulated nanocomposites made of this epoxy with graphene nanofillers and verified the results against continuum approaches, demonstrating the potential for designing composites with tunable thermophysical properties for various applications.
Article
Energy & Fuels
Matteo Morciano, Matteo Alberghini, Matteo Fasano, Mariella Almiento, Flaviana Calignano, Diego Manfredi, Pietro Asinari, Eliodoro Chiavazzo
Summary: The low thermal conductivity of Phase Change Materials (PCMs) can be improved by adding highly conductive fillers, but ensuring their stable and homogeneous dispersion is challenging. Metal 3D printing allows for the design of optimal heat conduction paths within the PCM. In this study, a device-scale latent heat storage system was manufactured using metal additive manufacturing and demonstrated high specific power densities.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Materials Science, Multidisciplinary
Giovanni Trezza, Eliodoro Chiavazzo
Summary: This study compares several classifiers, focusing on the selection and construction of a minimal set of suitable material features. The investigation is conducted on a high quality database of low temperature superconductors using composition-based descriptors. General strategies to reduce the number of descriptors for material classification are proposed and discussed. Bayesian type classifiers are found to be particularly convenient when combined with a multi-objective optimization procedure for reducing the set of composition-based material descriptors.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Operations Research & Management Science
Flaviana Calignano, Vincenza Mercurio
Summary: This paper provides an overview of the impact of integrating additive manufacturing (AM) into the supply chain, its correlation with reshoring, and its effect on environmental sustainability. Implementing AM technologies simplifies the traditional supply chain, leading to cost reductions in transportation and warehousing. Additionally, it enables significant reduction in waste production. However, the high cost of machinery and limited knowledge hinders widespread adoption.
CLEANER LOGISTICS AND SUPPLY CHAIN
(2023)
Article
Engineering, Manufacturing
F. Calignano, V. Mercurio
Summary: This study investigated the robustness of different instruments for roughness measurements on AlSi10Mg parts produced by PBF-LB/M process, as well as the effect of aspect ratio on the surface roughness obtained from WEDM. The results showed a better correspondence between P- and S- parameters and revealed variations in roughness values across different areas of the components, requiring constant adjustment of cutting parameters for uniform surface roughness.
INTERNATIONAL JOURNAL OF INTERACTIVE DESIGN AND MANUFACTURING - IJIDEM
(2023)
Article
Thermodynamics
Cong Li, Jiali Wang, Chenhui Wang, Yanke Jin, Yina Yao, Rui Yang
Summary: This study investigates the impact of NaCl water droplets with various concentrations on a heated surface. The results show that the impact patterns can be categorized into different types, and models are established to predict the spreading behavior of droplets with different concentrations. Additionally, high concentration droplets exhibit more violent boiling and have lower residual energy and rebound time.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
C. Barrera, V. Castro, F. Escudero, J. J. Cruz, I. Verdugo, J. Yon, A. Fuentes
Summary: This study focuses on the characterization of soot maturity and sooting propensity of anisole fuel in a controlled laminar coflow diffusion flame. The results show that the spatial distribution of soot volume fraction is enhanced near the flame centerline, while soot production is promoted near the flame wings. The temperature increase also affects the maturity of soot particles.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Roman W. Morse, Jason Chan, Tiago A. Moreira, Jared J. Valois, Evan T. Hurlburt, Jean-Marie Le Corre, Arganthael Berson, Kristofer M. Dressler, Gregory F. Nellis
Summary: This study investigates the dryout of liquid film and the role of disturbance wave frequency. Experimental results indicate that the heat transfer coefficient associated with optimal boiling conditions is maximized when the surface is dry 5% of the time, independent of pulse amplitude and frequency. Liquid-film measurements, dryout statistics, and direct observation suggest that disturbance-wave frequency can be manipulated by density-wave oscillations in the flow field.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
E. J. Vega, J. M. Montanero
Summary: In this study, we experimentally investigated the bursting of a bubble covered with a surfactant. We found that the bubble bursting time is longer compared to a surfactant-free bubble due to interfacial elasticity. Furthermore, the Marangoni stress drives liquid flow that allows the jet to escape from the end-pinching mechanism within a certain surfactant concentration range.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Guofu Sun, Yi Zhan, Tomio Okawa, Mitsuhiro Aoyagi, Akihiro Uchibori, Yasushi Okano
Summary: Experiments were conducted on liquid jets ejected from oval nozzles to investigate the effects of nozzle orifice shape on jet behavior. The study found that the liquid jet exhibited different characteristics at different liquid flow rates. Correlations were established to predict the liquid jet state and characteristics of the secondary droplets produced during jet impact onto a solid surface. This research extended the available knowledge on liquid jet behavior.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Jeonghoon Lee, Laurent Zimmer, Takeshi Saito, Shinji Nakaya, Mitsuhiro Tsue
Summary: This study investigates the effects of spatial resolution on DMD amplitudes and spatial mode strengths, and proposes scaling factors to correct for the resolution differences. The results show that the proposed scaling factors successfully normalize the amplitudes and spatial modes, allowing for quantitative comparison of data obtained with different spatial resolutions. This study is significant for analyzing spatiotemporal data in various fields.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Yanli Zhao, Shibing Kuang, Xiaoliang Zhang, Mingjun Xu
Summary: This study experimentally investigates the dynamic process of water droplet impacting different wood surfaces and analyzes and discusses the impacting phenomena, phenomena distribution, droplet spreading dynamics, and maximum spread factor. The results show that the impacting process can be distinguished by Weber numbers and Reynolds numbers, and can be predicted by mathematical expressions.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Aakhash Sundaresan, Atul Srivastava, Callum Atkinson
Summary: This study presents the first-ever application of an advanced methodology, combining two-color laser-induced phosphorescence and particle image velocimetry, to investigate the heat transfer mechanisms on the surface of a cylinder placed inside a confined square duct. The technique allows for simultaneous measurement of velocity and temperature fields, reducing the complexity and costs associated with separately measuring temperature distributions. Experimental observations show that increasing the mass flow rate enhances heat removal from the cylinder surface, and increasing the cylinder heat input enhances heat transfer in the rear portion of the cylinder.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Harish K. Patel, Sukhjeet Arora, Rutuja Chavan, Bimlesh Kumar
Summary: This study experimentally analyzed the multiscale statistical assessment of scour depth surrounding spur dikes with downward seepage. The research found that seepage affects the morphological behavior and hydrodynamic characteristics of the channel bed, leading to changes in scour formation. The rate of scour depth changes initially increases with higher seepage velocity but eventually becomes constant over time.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Justas Sereika, Paulius Vilkinis, Gediminas Skarbalius, Algis Dziugys, Nerijus Pedisius
Summary: This study experimentally investigated the pulsatile flow structure based on a transitional-type cavity. It was found that the pulsation amplitude has a more significant effect on the dynamics of recirculation zone than the pulsation frequency. Pulsatile flow can reduce the size of the recirculation zone.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Merav Arogeti, Eran Sher, Tali Bar-Kohany
Summary: This study provides a detailed exploration of the events that occur when a droplet hits a dry solid surface of various small sizes, with a focus on the deposition, receding breakup, and prompt splash phases. By utilizing non-dimensional analysis and graphical representation, the boundaries between different events are defined, and criteria for differentiation based on target-to-drop ratio, Reynolds, and Webber numbers are presented.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Tianxiong Li, Fei Wen, Yingchun Wu, Botong Wen, Lei Wang, Jinxin Guo, Xuecheng Wu
Summary: This study investigates the structure of the flow field induced by a strut in a scramjet and its influence on flame stabilization. Experimental and numerical analyses reveal that the flow field exhibits features beneficial for flame stabilization, but the asymmetry of the flow poses a challenge to flame establishment.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Syed Ehtisham Gillani, Yasir M. Al-Abdeli
Summary: This study investigates the asymmetry in bluff-body stabilised annular jets and finds that swirl can significantly mitigate the asymmetry and restore the symmetry of the jets. Moreover, increasing the Reynolds number and the swirl intensity can both decrease the asymmetry of the jets.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Utsav Bhardwaj, Rabindra Kumar, Shyama Prasad Das
Summary: This study presents an experimental investigation on flooding phenomenon in a pulsating heat pipe (PHP) unit cell, and analyzes the impact of flooding on the performance of PHP. The study recognizes three different flooding mechanisms and finds that currently accepted correlations for predicting flooding velocity are inaccurate. The study emphasizes the need for further research on flooding in PHPs.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)
Article
Thermodynamics
Yunpeng Xue, Yongling Zhao, Shuo-Jun Mei, Yuan Chao, Jan Carmeliet
Summary: This study investigates the impact of building morphology on local climate, air quality, and urban microclimate. The researchers conducted an experimental investigation in a large-scale water tunnel, analyzing heat and flow fields using Laser-induced Fluorescence (LIF) and Particle Image Velocimetry (PIV). The findings show that factors such as canyon configuration, buoyant force, and approaching flow magnitude significantly influence fluid flow in street canyons, and the morphology of the street canyon dominates ventilation rate and heat flux. For example, changing the aspect ratio of a street canyon can lead to a significant change in air ventilation rate, ranging from 0.02 to 1.5 under the same flow conditions.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2024)