Article
Thermodynamics
Najiyah Safwa Khashi'ie, Norihan M. Arifin, John H. Merkin, Rusya Iryanti Yahaya, Ioan Pop
Summary: This paper numerically analyzes the stagnation point flow of Cu-Al2O3/water hybrid nanofluid with mixed convection past a flat plate and circular cylinder. The study finds that an increase in the curvature parameter tends to extend the critical value and improve heat transfer performance. The application of hybrid Cu-Al2O3/water nanofluid can decelerate the separation of laminar boundary layer flow and generate higher heat transfer rates compared to Cu-water nanofluid and pure water.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2021)
Article
Multidisciplinary Sciences
Manoj Kr. Triveni, Rajsekhar Panua
Summary: A computational study was conducted to investigate the heat transfer around an isothermally heated circular cylinder moving at different locations within a square enclosure. The results showed that the average Nusselt number is significantly influenced by the cylinder position, with the maximum value found at a specific location. Additionally, it was observed that the average Nusselt number increases with higher nanoparticle concentrations and Rayleigh numbers, and lower Richardson numbers.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2021)
Article
Thermodynamics
Laith M. Jasim, Hudhaifa Hamzah, Cetin Canpolat, Besir Sahin
Summary: This study presents a numerical solution for the influence of an inner rotating adiabatic cylinder on mixed convection of hybrid nanofluid inside a vented cavity. The study explores the effects of various parameters on energy transport and presents the results through qualitative and quantitative figures.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Physics, Multidisciplinary
E. Ragulkumar, P. Sambath, Ali J. Chamkha
Summary: This study employs a numerical solution approach to examine the impacts of various nanofluid flows on an up straight cone with iso-thermal surface velocity and temperature. The experiment used different types of nanofluids and volume fractions to detect differences in heat transfer occurrence depending on temperature and velocity. Graphs have been used to show a parametric analysis for various flow field features.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Multidisciplinary Sciences
Hameed K. Hamzah, Farooq H. Ali, M. Hatami, D. Jing, Mohammed Y. Jabbar
Summary: Numerical Galerkin Finite Element Method (GFEM) was used to study the conjugate heat-transfer of a rotating cylinder in Fe3O4-water nanofluid, showing significant effects of parameters such as nanoparticles volume fraction and Hartmann numbers on the heat transfer performance.
SCIENTIFIC REPORTS
(2021)
Article
Mechanics
Mohammad Athar Khan, Syed Fahad Anwer, Saleem Anwar Khan, Nadeem Hasan
Summary: In this study, vortex shedding suppression of a vibrating square cylinder in a mixed convection regime was numerically investigated. The critical Richardson number (Ri(c)) was determined for different reduced velocities, and the generation of baroclinic vorticity was comprehensively explored. The results showed that Ri(c) varied for different flow regimes, with values close to Ri(c) for a stationary cylinder in certain cases.
Article
Multidisciplinary Sciences
Usman, Abid Ali Memon, Metib Alghamdi, Taseer Muhammad
Summary: The article investigates heat transfer characteristics of a water alumina nanofluid through a three-dimensional annular. The study found that the average Nusselt number at the middle of the annular increases initially with volume fraction before decreasing, while the average percentage change in temperature relative to the inner cylinder's hot temperature decreases with an increase in volume fraction.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Multidisciplinary
Sina Nouraei, Amirmasoud Anvari, Azher M. Abed, Omid Ali Akbari, Farnaz Montazerifar, Shaghayegh Baghaei, Masoud Fatholahi
Summary: This paper presents a numerical simulation of nanofluid flowing in an open cavity under mixed convection by considering various heat transfer zones. To enhance the heat transfer, water was augmented with copper nanoparticles at different volume fraction values. The results show that due to the low velocity of the fluid in the circular part of the cavity, most of the fluid exchange is due to natural convection and the hot areas strengthen the flow circulation.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Engineering, Multidisciplinary
Umair Khan, A. Zaib, A. Ishak
Summary: The research explores mixed convective stagnation point flow of a hybrid nanofluid over a yawed cylinder with radiation impact, revealing significant results related to yaw angle, hybrid nanoparticle volume fraction, mixed convection, radiation, and non-similarity phenomena. The impact of the yaw angle on the velocity and temperature profiles of the hybrid nanofluid in different flow directions is discussed, along with the effects of hybrid nanoparticles on velocity and temperature in both assisting and opposing flow scenarios.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Article
Thermodynamics
J. Tibaut, T. Tibaut, J. Ravnik
Summary: This paper presents a numerical study of laminar mixed convection of a nanofluid in a pipe and compares the results with experimental measurements. The research found that the distribution of nanoparticle concentration has a significant impact on the temperature field in both the fluid and the pipe.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Computer Science, Interdisciplinary Applications
Vali Enjilela, Elshan Soltani, Mohsen Ghadyani, Rasul Bagheri
Summary: In this paper, natural convection flow in a square cavity filled with nanofluid water-Al2O3 is numerically analyzed. The study shows that the rate of heat transfer can increase or decrease with the increase in volume fraction and temperature.
INTERNATIONAL JOURNAL OF MODERN PHYSICS C
(2021)
Article
Thermodynamics
R. Hemalatha, Peri K. Kameswaran, P. V. S. N. Murthy
Summary: The current article discusses the mixed convective flow of Graphene oxide and Clay nanoparticles suspended in a nanofluid in a non-Darcy porous medium, taking into account the shape of the nanoparticles. The findings indicate that spherical nanoparticles exhibit an enhanced temperature distribution and have a higher settling rate in the base fluid.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Chemistry, Analytical
Farizza Haniem Sohut, Umair Khan, Anuar Ishak, Siti Khuzaimah Soid, Iskandar Waini
Summary: The flow of a water-based alumina-copper hybrid nanofluid in an inclined cylinder with the impact of buoyancy force and a magnetic field is investigated in this study. The governing partial differential equations are transformed into a set of similarity ordinary differential equations, and then solved numerically using MATLAB software. The results compare well with previously published results.
Article
Thermodynamics
Amin Nikelham, Vali Enjilela, Nima Vaziri, Zahra Poolaei Moziraji
Summary: This paper investigates forced convection of Al2O3-water nanofluid over a circular cylinder inside a magnetic field. The study uses the finite element method to discretize the fluid equations and analyzes the impact of various parameters on the Nusselt number and its relationship with the volume fraction of the nanofluid.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Thermodynamics
Tahar Tayebi, Ali J. Chamkha
Summary: The study aimed to understand heat transfer and flow characteristics by natural convection of Al2O3-Cu/water-based hybrid nanofluid-filled square domain with various corrugated solid configurations under a horizontal magnetic field. Numerical solutions were obtained for the non-dimensional equations using finite volume discretization technique. It was found that maximum heat transmission rate occurred for weak Hartmann, undulation number, undulation amplitude, and high Rayleigh and nanoparticles volumic fraction values. Moreover, the fluid/solid heat conductivity ratio parameter enhanced heat transfer at weak Rayleigh while diminishing it at high Rayleigh.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Thermodynamics
Faroogh Garoosi, Faraz Hoseininejad, Mohammad Mehdi Rashidi
APPLIED THERMAL ENGINEERING
(2016)
Article
Thermodynamics
Faroogh Garoosi, Faraz Hoseininejad, Mohammad Mehdi Rashidi
Article
Thermodynamics
Faraz Hoseininejad, Saeed Dinarvand, Mohammad Eftekhari Yazdi
Summary: The study investigates the conjugate conduction and mixed convection heat transfer of a nanofluid in a rotational/stationary circular enclosure using a two-phase mixture model. Results show that inserting C.C around the heater can either increase or decrease heat transfer rate, depending on the thermal conductivity ratio. External heating and cooling enhance heat transfer compared to internal heating and cooling. Rotation direction of cylinders can be used as a parameter for controlling heat transfer rate.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2021)
Article
Chemistry, Physical
Rajalaxmi Sahoo, C. Reshma, D. S. Shankar Rao, C. V. Yelamaggad, S. Krishna Prasad
Summary: This study investigates the influence of the flexible spacer parity of a guest photoactive liquid crystalline dimer on the photonic bandgap features of the cholesteric and twist grain boundary smectic C phases of the host molecule. The results show that the parity of the photoactive dimer affects the width of the photonic bandgap and the blue-shift of the cholesteric phase. Additionally, the parity of the dimer also affects the layer spacing and two-dimensional periodicity of the liquid crystalline phases.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Sara Rozas, Alberto Gutierrez, Mert Atilhan, Alfredo Bol, Santiago Aparicio
Summary: This study presents a multiscale theoretical investigation on the use of bifunctional hydrophobic Deep Eutectic Solvent for carbon capture using tetrapropylammonium chloride, acetic acid, and ethanolamine. The characterization includes nanoscale analysis of CO2 absorption mechanisms and changes in liquid phase properties during gas capture.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Tabouli Eric Da-yang, Alhadji Malloum, Jean Jules Fifen, Mama Nsangou, Jeanet Conradie
Summary: In this study, the potential energy of different glycine tautomers and their interaction with Cu2+ cations was investigated. The results showed that the solvation medium and the presence of Cu2+ cations influenced the stability of glycine tautomers.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Xiaoliang Gou, Nan Ye, Qingqing Han, Junjie Cui, Long Yi Jin
Summary: In this study, amphiphilic rod-coil molecules with rigid DSA parts and flexible oligoether chains were designed and their assembly capacities were investigated. The morphology of the molecular aggregates was influenced by the pH of the solution and UV light, and the aggregates showed adsorption capacity for nitroaromatic compounds.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Shuang Liu, Liyan Shan, Cong Qi, Wenhui Zhang, Guannan Li, Bei Wang, Wei Wei
Summary: Optimizing the design of styrene-butadiene-styrene copolymer (SBS) is crucial for producing cost-effective SBS modifiers and improving road quality. This study examined the influence of SBS content and molecular structure on viscosity and compatibility. The results showed that the viscosity contribution of SBS is determined by its molecular structure and phase morphology.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Artem A. Petrov, Ekaterina A. Titova, Aydar A. Akhmadiyarov, Ilnaz T. Rakipov, Boris N. Solomonov
Summary: This work focuses on the thermochemistry of solvation of azeotropes. The enthalpies of dissolution of azeotropes in different mediums were determined, and the impact of the structure of the azeotropes on their properties in solution was discussed. A correlation between enthalpies of solvation and molar refraction was used to determine the vaporization enthalpies of azeotropes for the first time. The results were found to be consistent with literature data, obtained using direct and calculated methods. These findings contribute to the analysis of the structure-property relationships of azeotropes.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
L. V. Kamaeva, E. N. Tsiok, N. M. Chtchelkatchev
Summary: Understanding the correlations between liquids and solids allows us to predict the thermodynamic parameter range favorable for the formation of intriguing solid phases by studying liquids. In this study, we experimentally and theoretically investigated an Al-Cu-Co system within different composition ranges, and identified high-temperature solid phases. Our findings demonstrated the correlation between the boundaries of different solid phases and undercooling and viscosity in the concentration area.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
R. Aneesh Kumar, S. Jamelah Al-Otaibi, Y. Sheena Mary, Y. Shyma Mary, Nivedita Acharjee, Renjith Thomas, Renjith Raveendran Pillai, T. L. Leena
Summary: In this study, the interactions between doped and pristine coronenes and adenine nucleobases were investigated using Density Functional Theory. The optimal configurations, adsorption energies, charge transfer, and electrical properties of each complex were calculated. It was found that doped coronene had stronger adsorption strength and charge transfer compared to pristine coronene. The stability of the complexes was attributed to non-covalent interactions in the interactive region. The change in electrical conductivity of coronenes after adsorption suggested their sensitivity towards DNA bases. The predicted energy gap and prolonged recovery time for adenine-coronene configurations indicated the potential application of pristine/doped coronene in DNA detection.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Gang Zhou, Yongwei Liu, Biao Sun, Zengxin Liu, Cuicui Xu, Rulin Liu, Qi Zhang, Yongmei Wang
Summary: The CFD-DEM method was used to simulate the dust deposition pattern in the bronchus of anchor digging drivers, revealing the highest dust concentration in the vortex region of the working face. The study also found a positive correlation between dust particle diameter and bronchial deposition rate, and a negative correlation with alveolar deposition rate.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Yan Zhang, Yafei Luo, Lingkai Tang, Mingyan E, Jianping Hu
Summary: This study investigates the effects of different transition metal decorations on B12N12 nanocages on the adsorption properties of nitrosourea drugs using computational methods. The results reveal the presence of weak non-covalent interactions between metals and nanocages, and the interaction between drugs and nanocages plays a significant role in drug adsorption. Compared to free drugs, the adsorption of drugs on nanocages can facilitate electron transfer, reduce energy gaps and chemical hardness, indicating activity at the target site.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
C. I. Alcolado, J. Poblete, L. Garcia-Rio, E. Jimenez, F. J. Poblete
Summary: In this study, the selective oxidation of aromatic aldehydes was investigated using Ru(VI) as a catalyst and hexacyanoferrate (III) as a cooxidant in an alkaline medium. The reaction mechanism involves complex reaction orders for the oxidant and the aromatic aldehyde, while the reaction order for Ru(VI) is one. The proposed mechanism includes two catalytic cycles and the formation and decomposition of complexes. Quantitative structure-activity relationship analysis showed that deactivating groups in the para-position enhance the process.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Inez A. Barbieri, Marcos L. S. Oliveira, Franciele S. Bruckmann, Theodoro R. Salles, Leonardo Zancanaro, Luis F. O. Silva, Guilherme L. Dotto, Eder C. Lima, Mu. Naushad, Cristiano R. Bohn Rhoden
Summary: This study evaluated the adsorption of zolpidem on magnetic graphene oxide and synthesized magnetic graphene oxide adsorbents for zolpidem removal. The best magnetic nanoadsorbent was found to have a removal percentage of 87.07% at specific pH and temperature conditions. The results suggest that the removal of zolpidem is related to the surface chemistry of the adsorbent rather than the surface area of graphene oxide. The adsorbent showed excellent adsorption efficiency and magnetic behavior, making it a promising material for removing zolpidem from aqueous solutions.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Hongyan Huang, Chunquan Li, Siyuan Huang, Yuling Shang
Summary: This study examines the sensitivity of the thermal conductivity of water-based alumina nanofluids to changes in concentration, sphericity, and temperature. The results show that volume fraction and temperature have a significant impact on the thermal conductivity, while sphericity also needs to be considered. A support vector machine regression model was created to analyze the sensitivity of the thermal conductivity to different parameters. The findings indicate that temperature, sphericity, and volume fraction are the most sensitive variables.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Correction
Chemistry, Physical
V. M. Pergamenshchik, T. Bryk, A. Trokhymchuk
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Chemistry, Physical
Valentyn Rudenko, Anatolii Tolochko, Svitlana Bugaychuk, Dmytro Zhulai, Gertruda Klimusheva, Galina Yaremchuk, Tatyana Mirnaya, Yuriy Garbovskiy
Summary: This paper reports on the synthesis, structural characterization, spectral and nonlinear-optical properties of glass nanocomposites made of glass forming ionic liquid crystals and nanoparticles. The study reveals that by exciting the nanocomposites within their absorption band, a control over effective optical nonlinearities can be achieved, allowing the modification of the magnitude and sign of the effective nonlinear absorption coefficient. The proposed strategy using metal-alkanoates based glass-forming ionic liquid crystals and nanoparticles shows great potential for the development of nanophotonics and plasmonics technologies.
JOURNAL OF MOLECULAR LIQUIDS
(2024)