Article
Mechanics
M. Ajithkumar, P. Lakshminarayana, K. Vajravelu
Summary: The study focuses on analyzing the impact of Hall current, thermal radiation, and cross-diffusion on peristaltic pumping of a specific type of nanofluid in a porous medium. The research investigates the behavior of velocity, temperature, heat transfer coefficient, concentration, skin friction coefficient, and trapping. The findings are compared with existing studies and validated using numerical solutions.
Article
Computer Science, Artificial Intelligence
Nur Syahirah Wahid, Norihan Md Arifin, Najiyah Safwa Khashi'ie, Ioan Pop, Norfifah Bachok, Mohd Ezad Hafidz Hafidzuddin
Summary: A new kind of heat transfer fluid called hybrid nanofluid was introduced to enhance heat exchanger performance. Numerical investigation revealed that adding copper volume concentration can improve heat transfer and prevent laminar-to-turbulent transition.
NEURAL COMPUTING & APPLICATIONS
(2022)
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
Thermodynamics
M. A. El-Shorbagy, Farshad Eslami, Muhammad Ibrahim, Pouya Barnoon, Wei-Feng Xia, Davood Toghraie
Summary: This numerical study investigates the mixed convection of nanofluid flow in a trapezoidal channel with different aspect ratios, along with the presence of porous media. The results show that a decrease in Richardson number leads to increased heat transfer, with the highest heat transfer occurring at 90% porous height. The aspect ratio of 0.3 predicts more heat transfer compared to an aspect ratio of 0.5, and the Nusselt number exhibits unique behaviors with an increase in percentage of porous height.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Kezheng Zhang, Nehad Ali Shah, Mansoor Alshehri, Shalan Alkarni, Abderrahim Wakif, Sayed M. Eldin
Summary: In this study, the two-dimensional flow pattern and thermal characteristics of a radiating homogeneous hybrid nanofluidic mixture (Ag + TiO2) -H2O over a non-movable wedge surface were investigated. The conservation equations were properly stated by combining Darcy's-Brinkman and single-phase models, taking into account the hydrothermal impacts of specific variable heat and magnetic sources. The derived boundary layer equations were solved numerically using a robust iterative GDQM-NRT algorithm, and the accurate results were presented graphically and tabularly. The findings showed that the thermal buoyancy forces, as well as Lorentz's and Darcy's forces, act as assisting factors, resulting in a cooling effect throughout the hybrid nanofluidic mixture (Ag + TiO2) -H2O due to the imposed axial pressure gradient. Energetically, it was demonstrated that the silver nanoparticles play a noteworthy role in enhancing the heat transfer rate at the wedge surface with an increase in the resulting surface viscous drag forces.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Nepal Chandra Roy, Aysha Akter
Summary: This article analyzes the mixed convective hybrid nanofluid flow over a shrinking cylinder in a porous medium, taking into account the presence of a magnetic field. The study finds that the skin friction coefficient and Nusselt number increase significantly with the increase in mixed convection parameter, magnetic field parameter, and porosity parameter. The study also reveals that the boundary layer separation is delayed due to higher values of these parameters, as well as the curvature parameter and volume fractions of the nanoparticles.
Article
Engineering, Mechanical
G. K. Ramesh, J. K. Madhukesh, S. A. Shehzad, A. Rauf
Summary: Flow and heat distribution over a convergent or divergent channel have significant implications in various engineering fields. This study focuses on enhancing heat transfer in ternary nanofluid flows induced by stretched convergent or divergent channels. The addition of nanoparticles improves thermal distribution. Mathematical modeling and numerical methods are employed to investigate the impact of different factors on energy transport.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2022)
Article
Physics, Multidisciplinary
A. Sumithra, R. Sivaraj
Summary: In this study, the characteristics of mixed convection nanofluid flow inside a square enclosure saturated with porous medium are numerically investigated, taking into account the impact of chemical reaction, Joule heating, magnetic field, and viscous dissipation. The results show that free convection is more dominant than forced and mixed convection, and the increase in the chemical reaction parameter has a significant effect on fluid flow and mass transfer.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Thermodynamics
Essam M. Elsaid, Mohamed S. Abdel-wahed
Summary: This article investigates mixed convection of hybrid-nanofluid in a vertical channel, considering the influence of hybrid fluids and thermal radiation on velocity and temperature behavior. Results show that the hybrid flow of nanofluid shifts the location of Rayleigh number compared to mono nanoparticle fluid and thermal radiation improves the heat transfer rate by 12%-22% according to the ratio of hybrid nanoparticles within the base fluid.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Mechanics
Km Renu, Ashok Kumar, Abhishek K. Sharma
Summary: The study investigated the stably stratified flow in a linearly heated vertical pipe filled with a fluid-saturated porous medium, with a focus on the impact of permeability and Prandtl number on the stability of basic flow at different disturbance modes. The results demonstrate that the least stable mode depends on the values of Pr and Da, with a small range of Pr exhibiting a change in destabilizing characteristics to stabilizing characteristics for certain Da values.
Article
Engineering, Multidisciplinary
Z. Z. Rashed, Muflih Alhazmi, Sameh E. Ahmed
Summary: The non-homogenous two-phase Buongiorno's nanofluids model is applied to investigate convection in cubic enclosures filled with homogenous/heterogeneous porous medium. Different cases are considered, with the heterogeneous case in all directions showing the highest average Nusselt coefficient, while the homogenous case has the lowest heat transfer rate. Increasing Rayleigh and Darcy numbers enhances the average Nusselt number in all porous cases.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Article
Thermodynamics
Muhammad Yasir, Masood Khan, A. S. Alqahtani, M. Y. Malik
Summary: Investigation on hybrid nanofluids shows their effectiveness as heat transfer fluids for industrial applications, with nanoparticles' thermal conductivity, particle volume fractions, and mass flow rates playing a major role in enhancing heat transfer. This article aims to analyze the flow of Zn-TiO2/H2O hybrid nanofluid past an inclined shrinking surface and numerically solve the problem using Matlab software. The study reveals the impacts of controlling parameters on fluid velocity, temperature distribution, skin friction coefficient, and local Nusselt number, showing that mixed convection parameter, heat sink/source, Eckert number, and temperature ratio influence the fluid flow and thermal distribution.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Physics, Multidisciplinary
Bullo Hindebu, O. D. Makinde, Lemi Guta
Summary: This study investigates the hydrodynamic and thermal behaviors of unsteady mixed convection flow of nanofluid in a micro-channel filled with a saturated porous medium. The effects of various thermophysical parameters on the flow behavior are discussed, showing that velocity and temperature increase with certain parameters while concentration increases with others. Additionally, the study reveals that skin friction coefficient, Nusselt number, and Sherwood number are higher for specific parameter values.
INDIAN JOURNAL OF PHYSICS
(2022)
Article
Multidisciplinary Sciences
Yuanjian Lin, Sadique Rehman, Nevzat Akkurt, Tim Shedd, Muhammad Kamran, Muhammad Imran Qureshi, Thongchai Botmart, Abdulaziz N. Alharbi, Aamir Farooq, Ilyas Khan
Summary: Nanofluids are smart fluids that enhance heat and mass transfer, and have various applications in industry and engineering. This study focuses on blood-based nanofluids with carbon nanotubes as nanoparticles in the presence of a magnetic field. The effects of magnetohydrodynamics (MHD) on the heat and velocity of nanofluids are investigated, and it is found that MHD significantly influences the flow characteristics.
SCIENTIFIC REPORTS
(2022)
Article
Physics, Applied
Padma Ummeda, Surender Ontela
Summary: This research aims to analyze the significance of thermal radiative flux and entropy generation on the flow of hybrid nanofluid within a vertical channel. The equations governing the problem are solved through the Homotopy Analysis Method (HAM) after appropriate similarity conversions. The findings show the significant influence of the Brinkman number on the Bejan number and entropy regulation in the system, which are depicted through graphical representation.
MODERN PHYSICS LETTERS B
(2023)
Article
Nanoscience & Nanotechnology
Qudsia Rasheed, Huma Ajab, Maria Farooq, Sohail Anjum Shahzad, Asim Yaqub
Summary: This study aimed to synthesize a nanocomposite of Musa paradisiaca L. peels with magnetite for the detection of H2O2. The sensor showed a colorimetric response and exhibited high selectivity and sensitivity in detecting H2O2 within a wide concentration range.
APPLIED NANOSCIENCE
(2022)
Article
Environmental Sciences
Saeed Rehman, Sayyaf Yousaf, Quanyun Ye, Liu Chenhui, Muhammad Bilal, Ahson Jabbar Shaikh, Muhammad Saqib Khan, Sohail Anjum Shahzad, Pingxiao Wu
Summary: This study investigates the influence of cattle manure-derived dissolved organic matter (DOM) on the binding of mercury by bentonite clay. The results show that the presence of DOM enhances the binding of mercury to bentonite, but at the same time, it decreases the binding of mercury on the clay surface. The binding of DOM with bentonite increases the number of binding sites, resulting in higher binding capacity. XPS and FTIR analysis confirm that bentonite-DOM has distinct physico-chemical features compared to bentonite alone. DOM also promotes the reduction of Fe3+ and increases the binding of mercury by about 10%. These findings provide important insights into the interaction between mineral metals and DOM in organic matter-containing environments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Nazeer Ahmad Khan, Sara Waheed, Hafiz Muhammad Junaid, Asad Hamad, Muhammad Imran, Sajid Hussain Shah, Gul Shahzada Khan, Sohail Anjum Shahzad
Summary: This study presents the synthesis and characterization of multiple stimuli responsive organic probes with remarkable structural properties. The probes exhibit aggregation induced emission and aggregation caused quenching effects. They also demonstrate high selectivity and sensitivity for the detection of picric acid, both in solution and in the vapor phase.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Chemistry, Physical
Sanwa Rafique, Hasher Irshad, Shumaila Majeed, Khadija, Rimsha Rubab, Muhammad Imran, Asad Muhammad Khan, Sohail Anjum Shahzad
Summary: A novel stilbene-based sensor with enhanced red-shifted fluorescence emission was synthesized for sensitive and selective detection of nitrobenzene. The fluorescence intensity of the sensor was quenched upon interaction with nitrobenzene, which was attributed to the combined effect of the smaller size of nitrobenzene and photo-induced electron transfer process. This study provides a new approach for the detection of nitrobenzene in solution and vapor phase using an active bathochromic shifted fluorescent sensor with AIEE property.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Chemistry, Physical
Mohammed A. Assiri, Suman Hanif, Hafiz Muhammad Junaid, Asad Hamad, Hasher Irshad, Muhammad Yar, Waqar Rauf, Sohail Anjum Shahzad
Summary: Iron is an essential microelement and a crucial catalyst in humans, but its excess poses health risks. In this study, efficient solvatochromic and AIEE active TPA based sensors TPA 1 and TPA 2 were designed and synthesized for sensitive detection of iron. The sensors showed selective optical tracing of iron (Fe (II)) in aqueous media through fluorescence quenching mechanism with low detection limits. They were also applied in solid state Fe (II) trailing and demonstrated practical applicability in quantifying Fe (II) in wheat flour, water samples, and blood serum.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Spectroscopy
Mohammed A. Assiri, Saddam Hussain, Hafiz Muhammad Junaid, Muhammad Tahir Waseem, Asad Hamad, Huma Ajab, Jamshed Iqbal, Waqar Rauf, Sohail Anjum Shahzad
Summary: In this study, fluorescent probes SH1 and SH2 were designed for highly selective and sensitive detection of hypochlorite ion (ClO-). These probes showed aggregation-induced emission (AIE) and exhibited excellent sensing potential in various samples, including live cells, blood serum, and real water samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Spectroscopy
Mohammed A. Assiri, Muhammad Tahir Waseem, Asad Hamad, Muhammad Imran, Umar Farooq, Sohail Anjum Shahzad
Summary: Two fluorescent probes were synthesized to detect hypochlorite ions in food and industrial samples. Probe 1 showed excellent ratiometric response, while probe 2 exhibited turn-off fluorescent response. These probes have diverse practical applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Spectroscopy
Khadija, Hasher Irshad, Sanwa Rafique, Asad Muhammad Khan, Shamyla Nawazish, Habib ur Rehman, Muhammad Imran, Sohail Anjum Shahzad, Umar Farooq
Summary: A new fluorescent probe NS, based on naphthalimide with exceptional AIEE properties through the formation of J-aggregates, was synthesized via a single-step imidation reaction. The probe exhibited excellent selectivity and sensitivity for the detection of nitrobenzene based on fluorescence quenching response. The formation of J-aggregates and the nature of interaction between the probe and nitrobenzene were investigated through fluorescence titration, solid-state fluorescence spectroscopy, and theoretical analysis.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Mathematics
Reham A. Alahmadi, Jawad Raza, Tahir Mushtaq, Shaimaa A. M. Abdelmohsen, Mohammad R. Gorji, Ahmed M. Hassan
Summary: Heat transfer is essential in engineering, energy, and biology. Traditional fluids are insufficient for efficient heat transfer, thus various models have been developed. Among them, the single-phase nanofluid model is prominent. This study focuses on numerically solving the micropolar fluid problem with a single-phase model in a channel, converting the governing partial differential equations into nonlinear ordinary differential equations using similarity transformation and solving them numerically with the finite difference method. The optimization analysis is implemented using response surface methodology and sensitivity analysis. The study shows that the sensitivity of skin friction coefficient (Cf-x) to Reynolds number (R) and magnetic parameter (M) is directly proportional and inversely proportional to the micropolar parameter.
Article
Chemistry, Physical
Khanzadi Omama Khan, Mohammed A. Assiri, Hasher Irshad, Sanwa Rafique, Asad Muhammad Khan, Abida Kalsoom Khan, Muhammad Imran, Sohail Anjum Shahzad
Summary: A triphenylamine-based fluorescent sensor T-TPA was designed with high quantum yield and exhibited aggregation induced emission enhancement (AIEE) character. It was employed for the detection of 4-nitrophenol (4-NP) in solution and vapor phase, showing fluorescence turn-off response and high selectivity even in the presence of interferences. Mechanistic approaches were employed to confirm the sensing of 4-NP and non-covalent interactions were supported by NCI and QTAIM analysis.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Chemistry, Analytical
Mohammed A. Assiri, Farhan Munir, Muhammad Tahir Waseem, Hasher Irshad, Waqar Rauf, Sohail Anjum Shahzad
Summary: This study reports an active probe PAT based on geometry-dependent hydrogen bonding for detecting H2O2 molecules. Unlike common fluorescent probes, probe PAT exhibits a strong fluorescence enhancement response to H2O2 due to restrictions in intramolecular vibrations. The probe shows excellent selectivity, nanoscale level detection, fast response, and distinguished photostability. Moreover, it can be conveniently used as a portable sensing tool for rapidly recognizing H2O2 vapors and solutions, with potential applications in various fields.
MICROCHEMICAL JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Aneela Khushal, Umar Farooq, Sara Khan, Azhar Rasul, Tanveer A. Wani, Seema Zargar, Sohail Anjum Shahzad, Syed Majid Bukhari, Nazeer Ahmad Khan
Summary: This study focuses on the synthesis of phthalimide and phthalamic acid analogs to test their inhibitory activity against beta-glucosidase and their cytotoxic activity against HepG2 cancer cells. Molecular docking and MD simulations were performed to understand the mode of interaction and binding affinities. Compound 1c showed better inhibitory activity against beta-glucosidase than the standard drug, while compound 3c exhibited stronger anti-tumor activity against the HepG2 cell line than the known drug.
Article
Spectroscopy
Sanwa Rafique, Abdullah Yahya Abdullah Alzahrani, Hasher Khadija, Hasher Irshad, Asad Muhammad Khan, Sohail Anjum Shahzad
Summary: An ECO sensor based on stilbene was designed for the sensitive and selective detection of mefenamic acid using fluorescence spectroscopy for the first time. The sensor ECO exhibited fluorescence turn-off response toward MFA due to PET and hydrogen bonding. The sensing mechanism of MFA was investigated through 1H NMR titration experiment and DFT calculations, confirming the presence of non-covalent interaction.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Spectroscopy
Abdullah Yahya Abdullah Alzahrani, Khanzadi Omama Khan, Sanwa Rafique, Hasher Irshad, Asad Muhammad Khan, Sohail Anjum Shahzad
Summary: A novel sensor TTU, based on triphenylamine (TPA), was designed and synthesized with reversible mechanochromic and aggregation induced emission enhancement (AIEE) properties. The sensor showed distinguished selectivity and was employed for fluorometric detection of Fe3+ in aqueous medium. Furthermore, the sensor acted as a fluorescence sensor for the detection of deferasirox (DFX) by displacing Fe3+ and releasing sensor TTU. The proposed sensing mechanisms for Fe3+ and DFX were confirmed through experiments and calculations.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Spectroscopy
Hasher Irshad, Mohammed A. Assiri, Sanwa Rafique, Asad Muhammad Khan, Muhammad Imran, Sohail Anjum Shahzad
Summary: A triazine based fluorescent sensor TBT was synthesized for sequential detection of Hg2+ and L-cysteine. The sensor showed excellent potential for selective detection of Hg2+ ions and L-cysteine in real samples. Interaction with Hg2+ enhanced the emission intensity of the sensor, while the interaction with L-cysteine resulted in fluorescence quenching.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
