Article
Thermodynamics
Atul Ranjan, Israr Ahmad, Rinku Kumar Gouda, Manabendra Pathak, Mohd Kaleem Khan
Summary: This study reports the creation of Cu(OH)2 nanoneedles on a copper surface using an anodization process, which can enhance critical heat flux (CHF) limit in pool boiling applications by improving surface wettability and wickability. Results show that the anodized surface requires higher wall superheat for nucleation and exhibits a higher CHF value compared to the plain surface.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Mechanics
Uzair Sajjad, Imtiyaz Hussain, Chi-Chuan Wang
Summary: A high-fidelity deep learning approach has been developed to accurately predict the boiling heat transfer performance of roughened surfaces, taking into account surface characteristics, testing conditions, and liquid thermophysical properties. The model identifies heat flux, surface inclination, surface roughness, among others, as prime factors affecting the nucleate boiling heat transfer coefficient. The final selected model achieved an R-squared of 0.994 and MAE of 0.65, showing high accuracy in estimating the investigated parameter.
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
(2021)
Article
Chemistry, Multidisciplinary
Shakerur Ridwan, Jordan Pollack, Matthew McCarthy
Summary: This study characterizes the impact of adding SiO2 particles to engineered surfaces for boiling enhancement, showing moderate improvement in critical heat flux but deterioration in heat transfer coefficient due to particle clogging. Various surfaces exhibited unique degradation mechanisms, with some showing size-dependent degradation of HTC and others showing degradation independent of particle size.
Article
Energy & Fuels
Amir Vasei Moghadam, Hamid Reza Goshayeshi, Issa Chaer, Alex Paurine, Saeed Zeinali Heris, Hadi Pourpasha
Summary: This study presents experimental data analysis comparing the performance of different concentrations and geometric configurations of carbon nanotubes/water nanofluids in boiling heat transfer. The results showed that a circular groove with a 45 degrees inclination and 33% higher than the base fluid on a smooth surface had the highest enhancement in heat transfer coefficient.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Youngsup Song, Chi Wang, Daniel J. Preston, Guanyu Su, Md Mahamudur Rahman, Hyeongyun Cha, Jee Hyun Seong, Bren Philips, Matteo Bucci, Evelyn N. Wang
Summary: This study investigates sandblasting as a scalable surface engineering technique for enhancing pool boiling heat transfer. The results show that surface roughness and volumetric wicking rate increase with the abrasive size, resulting in significant improvements in the critical heat flux and heat transfer coefficient.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Thermodynamics
Yonghai Zhang, Xiang Ma, Jinyu Wang, Wanbo Liu, Jinjia Wei
Summary: By designing and processing enhanced hybrid surfaces and considering the coupled effects of capillary wick and minichannels, the pool boiling heat transfer performance of these surfaces was improved. The impact of the ring groove and capillary wick on the boiling heat transfer was analyzed, and high heat flux and heat transfer coefficient were achieved with the hybrid surfaces. A correlation for predicting the critical heat flux on these hybrid surfaces covered capillary wick was proposed.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Erivelto dos Santos Filho, Igor Seicho Kiyomura, Bruno Alves de Andrade, Elaine Maria Cardoso
Summary: The evolution of surface modification/manufacturing processes has led to advancements in pool boiling research, with micro/nanostructures heating surfaces capable of increasing heat transfer coefficient (HTC) and critical heat flux (CHF). Hybrid processes combine different intensification techniques to achieve superior performance in boiling heat transfer. Experimental tests show a significant enhancement in HTC on hierarchical surfaces due to improved density of nucleation site and vapor bubble dynamics, indicating the potential for improved heat transfer enhancements.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Review
Thermodynamics
Munonyedi Egbo, Mohammad Borumand, Yahya Nasersharifi, Gisuk Hwang
Summary: This paper reviews the effects of surface orientation on pool boiling, including experimental and theoretical approaches to understand the changes in heat transfer coefficient and critical heat flux. The results show that tailored two-phase flow can enhance the performance of pool boiling. This review also discusses future research directions for engineered surfaces under different surface orientations.
APPLIED THERMAL ENGINEERING
(2022)
Article
Mechanics
Gangtao Liang, Yang Chen, Jiajun Wang, Zhao Wang, Shengqiang Shen
Summary: This study investigates pool boiling heat transfer on hybrid-wettability surfaces, showing that the nucleate boiling heat transfer coefficient is improved on these surfaces compared to the substrate and plain copper reference. However, the critical heat flux (CHF) behavior is complex on the enhanced surface. The difference in contact angles between the pattern and substrate plays a significant role in the CHF enhancement on the hybrid surface, although it affects the nucleate boiling heat transfer coefficient negatively.
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
(2021)
Article
Thermodynamics
Sanjay Kumar Gupta, Rahul Dev Misra
Summary: This study investigates the impact of microchannel geometry on heat transmission efficiency using Cu@ZnO hybrid nanofluid to develop micro/nanoporous coatings. The results show that higher nanofluid concentration and specific microchannel configuration can significantly enhance boiling heat transfer.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Nanoscience & Nanotechnology
Youngsup Song, Shuai Gong, Geoffrey Vaartstra, Evelyn N. Wang
Summary: Boiling is a fundamental process in many applications where surfaces with microcavities or biphilic wettability can enhance heat transfer efficiency. This study investigated microtube structures to simultaneously enhance heat transfer coefficient and critical heat flux, achieving significant improvements compared to smooth surfaces. The combination of micropillars and microtubes further increased critical heat flux by separating nucleating bubbles and rewetting liquids.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Thermodynamics
Vetrivel Kumar Kandasamy, Silambarasan Rajendran, S. Joseph Dominic Vijayakumar, S. Paul Singarayar
Summary: In this study, different nanofluids were used to investigate nucleate pool boiling at saturated conditions. The effect of heating surface characteristics and nanofluids on the heat transfer coefficient was studied using an experimental setup. Results showed that the rough surface and nanofluids significantly increased the heat transfer coefficient during boiling.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Mechanics
S. Mukherjee, P. C. Mishra, P. Chaudhuri, N. Ali, S. A. Ebrahim
Summary: An experimental study was conducted to investigate the thermal performance of water/titania nanofluid under nucleate pool boiling. The results showed an increase in heat transfer coefficient as heat flux and weight concentration increased, but the enhancement decreased at higher weight concentrations. New correlations with high prediction accuracies were proposed to relate wall superheat temperature with heat flux and heat transfer coefficient.
Article
Chemistry, Physical
Lukasz J. Orman, Norbert Radek, Jacek Pietraszek, Janusz Wojtkowiak, Marcin Szczepaniak
Summary: The paper discusses the use of laser treatment to improve boiling heat transfer by developing surface features. The impact of pulse duration and scanning velocity on microfins and surface roughness was analyzed. Results showed that the highest microfins and surface roughness were achieved with a pulse duration of 250 ns and scanning velocity of 200 mm/s. The study also examined the influence of macroscopic and microscopic modifications on boiling heat transfer of water and ethanol.
Article
Thermodynamics
Lin Lin, Yanxin Hu, Zipei Su, Minghan Zhu, Jin Huang, Changxiang Fan
Summary: The preparation of micro-nano hybrid structured copper surfaces through sandblasting and ultrasonic wet etching techniques has been investigated for its impact on nucleate pool boiling. The study found that the hybrid structure exhibits improved critical heat flux and heat transfer coefficient compared to smooth and individual micro or nano structured surfaces. The enhancement mechanisms are attributed to the combined effects of roughness, surface area ratio, and wettability.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Pravin O. Sharma, Surendra D. Barewar, Sandesh S. Chougule
Summary: The study investigated the enhancements in thermal properties, CHF, and HTC of novel Ag/ZnO hybrid nanofluid at various concentrations. It was found that within a certain concentration range, the nanofluid can enhance heat transfer, but exceeding a certain concentration can deteriorate the boiling heat transfer.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Physical
Deepak Rajendra Unune
Summary: This study investigated the influence of tool surface area (TSA) on micro-electrical discharge machining (μEDM) performance, revealing that TSA has a substantial impact on the process due to the scaling effect. Low-frequency workpiece vibration was applied to improve μEDM performance, with scanning electron microscopy used to examine the machined surfaces and disclose the effects of TSA and vibration frequency.
SURFACE REVIEW AND LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Siddhartha Kumar Singh, Harlal Singh Mali, Deepak Rajendra Unune, Ahmad Majdi Abdul-Rani, Szymon Wojciechowski
Summary: This study evaluates the effects of vibration on micro electrical discharge machining (m-EDM). The results show that vibrating the workpiece can increase the drilling speed but does not significantly affect the maximum achievable depth. The overcut on the entry side is highly stochastic and not significantly influenced by vibration. Vibration causes spillover from the molten pool on the machined surface for materials with higher conductivity. Gaussian Process Regression (GPR) proves to be more accurate than multivariate regression in predicting the outputs of this complex hybrid process.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Chemical
Siddhartha Kumar Singh, Harlal Singh Mali, Deepak Rajendra Unune, Szymon Wojciechowski, Dominik Wilczynski
Summary: In this study, two distinct nonparametric models (GRNN and GPR) were developed to predict the responses of micro-electric discharge machining (μ-EDM) process, and it was found that GPR outperforms GRNN. This research paves the way for the implementation of GPR in modeling and predicting the outputs of complex hybrid machining processes.
Article
Materials Science, Multidisciplinary
Pravin Pandit Harane, Szymon Wojciechowski, Deepak Rajendra Unune
Summary: This study proposes a rotary tool electrode setup for drilling Waspaloy and investigates the influence of process parameters on process performance. The results show that current is the most significant parameter, and the graphite tool electrode has the highest material removal rate at 25A current, but with poor surface quality. The brass tool electrode exhibits a higher tool wear rate due to its lower thermal conductivity and melting point.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Review
Green & Sustainable Science & Technology
Danil Yu Pimenov, Mozammel Mia, Munish K. Gupta, Alisson R. Machado, Giuseppe Pintaude, Deepak Rajendra Unune, Navneet Khanna, Aqib Mashood Khan, Italo Tomaz, Szymon Wojciechowski, Mustafa Kuntoglu
Summary: The preservation of energy and natural resources is the most important aspect of sustainability in manufacturing. Optimized processes and increased energy efficiency are key in minimizing negative impacts on the environment. Using low, clean, and renewable energy sources, as well as adopting environmentally friendly cooling methods, can help achieve more sustainable production.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Review
Chemistry, Physical
Akshat Srivastava Kulshrestha, Abhimanyu Singh Mertiya, Deepak Rajendra Unune, Ashok Kumar Dargar
Summary: This paper presents a comprehensive review of the research on electrical discharge grinding (EDG) and electrical discharge diamond grinding (EDDG). It discusses the advantages and limitations of these hybrid machining processes, highlighting the improvement in material removal through the rotating motion of the grinding wheel. The paper also explores the current research status and future research perspective in the area of EDG and EDDG processes.
SURFACE REVIEW AND LETTERS
(2023)
Review
Materials Science, Multidisciplinary
Deepak Rajendra Unune, Georgina R. Brown, Gwendolen C. Reilly
Summary: This review article discusses the importance of metallic biomaterials in clinical applications and their corrosion and wear resistance on implants. The article presents the properties of metallic biomaterials, the reasons for implant failure, and various surface modification techniques to enhance their corrosion and wear resistance.
Article
Engineering, Mechanical
Nikhil Jain, Jinesh Kumar Jain, Pravin Pandit Harane, Deepak Rajendra Unune
Summary: This study proposes and investigates a water-in-oil (W/O) nano-emulsion, synthesized from refined jatropha oil, as an alternative dielectric for electric discharge machining (EDM). The results indicate that the W/O nano-emulsion can improve the material removal rate (MRR) and reduce the relative wear ratio (RWER) compared to conventional EDM oil.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Akshat Srivastava Kulshrestha, Barun Haldar, Deepak Rajendra Unune, Ashok Kumar Dargar
Summary: This study assesses the performance of electrical discharge diamond face grinding (EDDFG) in processing super alloy Monel 400, and finds that EDDFG has better material removal rate and surface roughness compared to other machining methods. The study also evaluates the influence of diamond grit number and grinding wheel speed on the machining performance, and uses a multi-objective genetic algorithm to determine the optimal parametric settings.
MATERIALS RESEARCH EXPRESS
(2023)
Article
Engineering, Multidisciplinary
Akshat Srivastava Kulshrestha, Deepak Rajendra Unune, Ashok Kumar Dargar
Summary: This study investigates and optimizes the electro discharge face grinding (EDFG) process for processing Monel 400 alloy. The research utilizes the central composite design (CCD) and analysis of variance (ANOVA) to determine the significance of process parameters, with a focus on the grinding wheel speed (GWS). The optimal process parameters are obtained through the Desirability approach and Genetic algorithm (GA), and the GA approach is found to be more effective in optimizing the EDFG process.
SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Deepak Rajendra Unune, Harlal Singh Mali
Summary: This study introduces low-frequency workpiece vibration assistance to improve the dimensional accuracy and surface quality of fabricated micro-channels in mu-ED milling.
ADVANCES IN MATERIALS AND PROCESSING TECHNOLOGIES
(2022)
Review
Engineering, Multidisciplinary
Mohamad Zamri Md Zain, Ahmad Majdi Abdul-Rani, Md Al-Amin, S. F. Khan, Muhammad Al'Hapis Abdul Razak, M. H. Sulaiman, Deepak Rajendra Unune
Summary: BIW framing is a main assembly process in the Body Shop, using an automated system to assemble body parts into a BIW. Challenges include high investment, model or product lifecycle changes, and multiple or mixed models on a single line. The current trend is towards flexibility, with a shift from dedicated model to multiple models in framing systems.
JURNAL KEJURUTERAAN
(2021)
Article
Chemistry, Physical
Wenjing Tan, Chunmei Gao, Shifeng Ji, Yunqing Xing, Yi Guo, Baogui Liang
Summary: Membrane separation technology is widely used in wastewater treatment due to its cost-effectiveness and productivity. However, organic membrane fouling caused by humic acid is a major barrier to its further development. This study successfully addressed this issue through the production of composite materials and self-cleaning membranes, providing beneficial strategies and solutions for membrane contamination problems.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Qichang Peng, Qingdong Ruan, Bin Wang, Jinyuan Liu, Chao Huang, Xingwang Zhu, Dan Li, Liangliang Liu, Yinchuan Wang, Xiaolin Zhang, Jia Yan, Paul K. Chu, Hui Xu
Summary: The escalating issue of water pollution has led to significant attention in the field of photocatalysis. In this study, OV-Sb2WO6-X photocatalyst with oxygen vacancies was synthesized, which exhibited enhanced charge separation efficiency and improved photocatalytic activity. The introduction of oxygen vacancies was successfully controlled and characterized, and the modified photocatalyst showed superior degradation efficiency for dye wastewater treatment.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Wangcheng Zhang, Cunchuan Zheng, Hu Xie, Weichao Du
Summary: By using a specific curing agent ETB, the problem of dispersion and stability for oily epoxy resin in cement slurry system has been successfully solved. The application of the emulsified curing agent ETB in oilfield cement slurry system shows good rheological performance, resistance to high temperature and high pressure water loss, and corrosion resistance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
O. I. Krivonos, A. Babenko, O. B. Belskaya
Summary: This study synthesized biochar based on sapropel and investigated the effects of chemical modification on its textural characteristics, acid-base properties, and adsorption properties. The results showed that the chemical modification increased the fraction of micropores, specific surface area, and changed the surface properties of biochar. The experiment also revealed that biochar pretreated with alkali exhibited the maximum adsorption capacity for copper ions. A conceptual model identifying the mechanisms of copper adsorption on sapropel-based biosorbent was proposed.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
H. Lachhab, N. Benzbiria, A. Titi, S. Echihi, M. E. Belghiti, Y. Karzazi, A. Zarrouk, R. Touzani, C. Jama, F. Bentiss
Summary: The corrosion inhibitory potency of two new pyrimidine-pyrazole derivatives, PPA and PPC, was evaluated for mild steel in 1 M HCl. The results showed enhanced inhibition activities with increased concentration, reaching maximal values of 91.15% and 92.39% for PPA and PPC, respectively. However, the mitigation potency decreased with increasing temperature. SEM and XPS analysis revealed that PPA and PPC adsorbed on the mild steel surface, forming a shielding layer that prevented the dissolution of the steel in the acidic solution.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Shanmugapriya Sivalingam, D. Jeya Sundara Sharmila, Goutham Golla, Lakshmanan Arunachalam, Tarunendu Singh, G. Karthikeyan, A. Shanthi, Kannan Malaichamy
Summary: This study aims to develop a nano-biofungicide comprising of volatile essential oil molecules to enhance its efficacy in the field of agriculture through easily scalable green synthesis technique. The nano biofungicide was prepared through one pot hot melt ultrasonication technique with easy water dispersibility and long term stability. The physico-chemical analysis revealed that, nano bio-fungicides were amorphous sphere-shaped nanoparticles with low melting point. The encapsulation efficiency of major components of essential oil was determined, and it was found that they followed Higuchi model of release kinetics. The essential oil loaded nanostructured lipid carrier showed significantly higher mycelial growth inhibition compared to pure essential oil, indicating enhanced bio-efficacy.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Yinlong Li, Yingqing Zhan, Yiwen Chen, Hongshan Jia, Ximin Chen, Fei Zhu, Xulin Yang
Summary: In this study, ZnO quantum dots decorated MXene nanosheets were used as a functional filler for waterborne epoxy coating. The improved dispersion and synergy of ZnO QDs and MXene nanosheets enhanced the anticorrosion performance of the coating.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Fucheng Guan, Jing Tao, Qiang Yao, Zheng Li, Yihang Zhang, Shi Feng, Jianbin Sun, Qiang Yang, Xuecui Song, Jing Guo, Yuanfa Liu
Summary: This paper presents a method for preparing adsorbent materials based on biomass that can efficiently adsorb methylene blue. The experimental results show that the material has a hierarchical structure, high adsorption capacity, and reusability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Pengfei Hu, Zuli Mo, Weiliang Wang, Chengzhe Li, Zhaojia Guo, Guanqing Lin, Zhimin Guo
Summary: This study developed a novel in-situ particle vision and measurement (PVM) system to investigate heterocoagulation between coarse and fine particles in mineral processing. The experimental results showed that the degree of heterocoagulation decreased with increasing pH and stirring speed. Furthermore, under certain hydrodynamic conditions, coal particles were more distributed at the rear of the glass bead.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Tanveer ul Haq Zia, Anwar ul Haq Ali Shah, Behisht Ara, Kashif Gul
Summary: A label-free immunosensor for detection of hepatitis C core antigen was fabricated using a ternary nanocomposite based on polypyrrole, silver doped zinc oxide, and exfoliated graphene. The immunosensor demonstrated low detection limit, high selectivity, and stability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Xiaoyan Feng, Jiachen Li, Lijun Liang, Linli Zhu, Sa Liu, Li Ren
Summary: In this study, polystyrene divinylbenzene microspheres were surface-modified by poly(carboxybetaine methacrylate) to develop an efficient hemoperfusion adsorbent for the removal of protein-bound toxins. The modified microspheres showed increased adsorption capacity and better biocompatibility, making them promising for clinical hemoperfusion therapy.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Xiaoye Bi, Dong Xue, Yunpeng Wang, Chencheng Lv, Zexiong Li, Tao Zhao
Summary: This research aimed to develop a durable and formaldehyde-free flame retardant treatment for cotton fabrics. The results demonstrated successful grafting of phosphorous acid (PA) onto cotton fabrics, leading to enhanced flame resistance while maintaining the desired fabric characteristics.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Ruolin Wang, Wenjuan Sun, Haisheng Han, Dongping Tao
Summary: This study finds that Al-starch colloidal depressants can effectively inhibit the flotation of ultrafine calcite and chlorite, and increase the grade of valuable minerals. The chemisorption of Al-starch on mineral surface changes the functional group peaks and generates new O-Al functional groups.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Wondimu K. Wakejo, Ali Maged, Beteley T. Meshesha, Joon W. Kang, Abayneh G. Demesa, Sandip Chakrabarti, Thallada Bhaskar, Ashok Kumar Gupta, Amit Bhatnagar
Summary: Simultaneously removing different pharmaceutical pollutants from wastewater is an important environmental issue, and the use of a system that can remove multiple contaminants at once is necessary. Functionalized biochar (FBC) has been found to be effective in simultaneously removing acetaminophen and ciprofloxacin and other pharmaceutical pollutants.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Yu Wang, Fengwen Yan, Jie Wu, Zhijun Huang, Liuting Song, Shunda Yuan
Summary: In this study, Cu single atoms are anchored on the external surface of g-C3N4 nanofibers to maximize atom utilization. This catalyst exhibits excellent Fenton-like catalytic activity and good stability due to the full utilization of Cu active sites.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
