Article
Engineering, Multidisciplinary
Nepal Chandra Roy, Ioan Pop
Summary: This study investigates the dual solutions for mixed convection flow of an Oldroyd-B fluid with alumina nanoparticles over a shrinking sheet, considering the effects of magnetic field and heat source/sink. The results show that some published findings are unrealistic. It is observed that with higher values of Deborah numbers, suction parameter, and magnetic field parameter, the occurrence of dual solutions becomes wider and the local skin friction coefficient and local Nusselt number increase. Additionally, dual solutions exist in a broader domain when the volume fraction of alumina nanoparticles is less than or equal to 0.05.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Thermodynamics
Sana Mumraiz, Aamir Ali, M. Awais, Meshal Shutaywi, Zahir Shah
Summary: This paper investigates the influence of entropy production on MHD hybrid nanofluid flow in the presence of an electric field. By numerically solving the dimensionless model, it is concluded that magnetic field and suction decelerate fluid motion, while high electric field values may resolve sticky effects. Friction factor and heat transfer rate are evaluated and results show good agreement with existing data.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Thermodynamics
K. Venkata Ramana, K. Gangadhar, T. Kannan, Ali J. Chamkha
Summary: This study analyzed the hydromagnetic transverse flow of an Oldroyd-B-type liquid with variable thickness using the Cattaneo-Christov model, considering additional impacts of thermal conductivity and heat generation, and numerical solutions were obtained using the Runge-Kutta-Fehlberg method. The physical response related to velocity and temperature was investigated, showing that the momentum boundary-layer thickness affects the magnetic field strength and thermal boundary layer in opposite ways, while retardation and relaxation time effects have opposite impacts on the temperature field. The results are valuable for understanding transport phenomena involving hydromagnetic rheological fluids.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Engineering, Multidisciplinary
Hassan Waqas, Abderrahim Wakif, Qasem Al-Mdallal, Mostafa Zaydan, Umar Farooq, Mohib Hussain
Summary: The study examines the effects of enhanced nanofluids on velocity, temperature, nanoparticles concentration, and microorganisms concentration by introducing different physical parameters. By applying the generalized Fourier's and Fick's laws, along with activation energy and multiple stratified boundary conditions, the bioconvection aspects of couple-stress nanofluid flows are investigated to reveal mathematical patterns and physical features.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Mathematics, Applied
Shuguang Li, Sami Ullah Khan, Kamel Al-Khaled, Ezza Ali, M. Ijaz Khan, Khalda Mohamed Ahmed Elamin, Bandar M. Fadhl, Basim M. Makhdoum
Summary: This study addresses the phenomenon of heat and mass transfer due to ferromagnetic flow of Oldroyd-B nanofluid. By implementing additional thermal sources and features such as heat source, thermal radiation, and activation energy, the dynamic of the flow problem is extended. The flow source is a moving stretching surface with magnetic dipole impact, and convective boundary conditions are implemented. The Boungrino nanofluid model is used to observe the consequences of thermophoresis and Brownian motion.
ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK
(2023)
Review
Green & Sustainable Science & Technology
Mehmet Gurdal, Kamil Arslan, Engin Gedik, Alina Adriana Minea
Summary: Recent studies in thermal engineering found that there is little research on employing nanofluid as a working fluid in a specific channel while considering both turbulators and magnetic field effect. This review focuses on the single and combined effects of nanofluid type, volume fraction, channel and turbulator geometry, magnetic field type, and flow regime on the heat transfer enhancement of these systems.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Thermodynamics
Aamir Ali, A. Noreen, S. Saleem, A. F. Aljohani, M. Awais
Summary: The study investigates the influence of Cu-Al2O3MHD hybrid nanofluid on heat transfer and flow through mathematical modeling and computations, revealing a decrease in temperature and an increase in fluid velocity with increasing volume fraction. Additionally, the change in fluid temperature under heat source/sink conditions was examined.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Physics, Applied
N. Ameer Ahammad, Awais Ahmed, Awatif Alhowaity, Muhammad Yasir, Haneen Hamam, Ahmed M. Galal
Summary: This study investigates the thermal effectiveness of nanoparticles in transient flow of a Maxwell fluid and examines the properties of mixed convection and magnetic field. The results show that the buoyancy ratio and mixed convection parameters enhance the velocity field, and the heat transfer rate increases significantly with the increase of thermophoretic and Brownian diffusion parameters. Additionally, the effect of a nonuniform heat source/sink leads to an increasing trend in the temperature profile.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2022)
Article
Biochemistry & Molecular Biology
Mohamad Nizam Othman, Alias Jedi, Nor Ashikin Abu Bakar
Summary: This study investigates the MHD stagnation point flow and heat transfer characteristics of CNTs nanofluid over a shrinking surface with heat sink effects, finding that nanofluids perform better in terms of flow and heat transfer compared to regular fluids.
Article
Multidisciplinary Sciences
Muhammad Ramzan, Abdullah Dawar, Anwar Saeed, Poom Kumam, Wiboonsak Watthayu, Wiyada Kumam
Summary: The study analyzes the magnetohydrodynamic flow of Ag - MgO/ water hybrid nanoliquid with slip conditions on an extending surface, incorporating thermal radiation and Joule heating effects. By utilizing the HAM method, solutions for higher-order ordinary differential equations are obtained, revealing significant variations in thermal and flow performance of the hybrid nanofluid under different flow parameters.
Article
Thermodynamics
G. P. Ashwinkumar, S. P. Samrat, N. Sandeep
Summary: This paper examines the impact of nonlinear thermal radiation on 2-D magnetohydrodynamic flow of hybrid nanoliquid across two distinct geometries and discusses the resulting flow and thermal distributions. The results show that nonlinear thermal radiation enhances thermal distributions and decreases heat transfer rates, with differences observed between flow over a cone and flow over a plate. Additionally, the thermal transport rate is significantly higher for flow above a cone compared to flow over a plate.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Ammar Abdulkadhim, Isam Mejbel Abed, Nejla Mahjoub Said
Summary: This study experimentally investigates the natural convection heat transfer in a three-dimensional I-shaped enclosure with wavy-walled and inner circular pipe. One layer is filled with Al2O3-water nanofluid while the other layer is filled with nanofluid/porous medium. The thermophysical properties of the nanofluid are measured, including thermal conductivity, viscosity, and density. The experimental results show good agreement with the calculated properties based on theoretical models within the studied nanofluid concentrations. Thermocouples are installed to measure the temperature, and magnetic fields are applied to observe the slight increase in temperature. It is also found that increasing the hot side wavy-walled temperature leads to an increase in the temperature difference in the nanofluid-porous region and the nanofluid region.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Mathematics
Abdul Samad Khan, He-Yong Xu, Waris Khan
Summary: This study investigates magnetized hybrid nanofluid flow with heat source/sink over an exponentially stretching/shrinking sheet, considering slip conditions for both hybrid nanofluid flow with and without slip. Results show that an increase in velocity slip parameter and magnetic parameter leads to higher skin friction, while an increase in thermal slip parameter and heat generation parameter decreases the Nusselt number.
Article
Mathematics, Applied
Tunde A. Yusuf, Muhaammad Bilal Ashraf, Fazle Mabood
Summary: This study focuses on the three-dimensional steady incompressible flow of an Eyring-Powell nanofluid past an exponentially stretching sheet with magnetic field. The Cattaneo-Christov heat flux with convective boundary condition is considered. The shooting method is used to obtain the numerical solution and analyze the behavior of thermo-physical parameters on the velocity, temperature, skin friction, heat transfer rate, and isotherms.
NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS
(2023)
Article
Multidisciplinary Sciences
Fuzhang Wang, Shafiq Ahmad, Qasem Al Mdallal, Maha Alammari, Muhammad Naveed Khan, Aysha Rehman
Summary: This article mainly focuses on the influence of chemical reaction slip condition on the unsteady three-dimensional Maxwell bio-convective nanomaterial liquid flow towards an exponentially expanding surface. The study examines the changes in temperature, velocity, microorganism, and concentration field through numerical calculations and graphical evaluation. The results show that the involvement of unsteadiness parameter restricts the transition from laminar to turbulent flow, while the velocity slip parameter has a decreasing effect on velocity components.
SCIENTIFIC REPORTS
(2022)
Article
Demography
Zeeshan Fareed, Mahdi Ghaemi Asl, Muhammad Irfan, Mohammad Mahdi Rashidi, Hong Wang
Summary: This study explores the relationship between international flight departures and COVID-19 deaths, revealing that international flights caused the spread of COVID-19 worldwide during May to June 2020. The overall findings also suggest asymmetry between daily international flight departures and COVID-19 deaths globally at different time-frequency periods due to the uncertainty surrounding the COVID-19 pandemic.
INTERNATIONAL MIGRATION
(2023)
Article
Environmental Studies
Zhang Zhen, Sami Ullah, Zhan Shaowen, Muhammad Irfan
Summary: This study examines the ecological consequences of renewable energy, financial development, and technical efficiency in the EU. The findings suggest that financial development is a significant contributor to the ecological footprint, while renewable energy and technical efficiency promote ecological sustainability by reducing the ecological footprint. The interaction between financial development and technical efficiency also helps mitigate the ecological footprint.
ENERGY & ENVIRONMENT
(2023)
Article
Environmental Sciences
Mirza Huzaifa Asif, Tan Zhongfu, Muhammad Irfan, Cem Isik
Summary: This study examines the factors influencing consumers' intentions to purchase eco-friendly appliances in an emerging economy's context. The research investigates the relationship between environmental knowledge, consumer attitude, green trust, and purchase intention. Survey data from 331 Pakistani consumers using energy-efficient household products are analyzed using structural equation modeling. The findings show that environmental knowledge positively influences consumer attitude and green trust. Additionally, green trust is significantly and positively related to purchase intention. The study also reveals the positive influence of perceived consumer effectiveness and perceived behavioral control on purchase intention. This research contributes to the B2B sales literature and provides implications for future research and practice.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Mirza Huzaifa Asif, Tan Zhongfu, Bilal Ahmad, Muhammad Irfan, Asif Razzaq, Waqar Ameer
Summary: There is a lack of research on the intention of consumers in rural China to adopt solar energy, and this study fills this gap. The results show that attitude, environmental knowledge, subjective norm, perceived behavioral control, and beliefs about the benefits of solar energy positively influence buying intention of solar energy, while environmental concern has no significant effect on buying intention. The study emphasizes the importance of changing societal norms, boosting consumer awareness, redesigning regulatory mechanisms, and stressing the benefits of solar power in enhancing environmental sustainability practices.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Public, Environmental & Occupational Health
Asaad Ahmed Nafees, Muhammad Zia Muneer, Muhammad Irfan, Muhammad Masood Kadir, Sean Semple, Sara De Matteis, Peter Burney, Paul Cullinan
Summary: This study aimed to assess the association between exposure in cotton mills in Karachi and different definitions of byssinosis and lung health. A cross-sectional survey was conducted among 2031 workers in 38 spinning and weaving mills, using questionnaire-based interviews, spirometry, and measurements of personal exposure to inhalable dust. The study found a high prevalence of respiratory symptoms but a low prevalence of byssinosis, with most respiratory outcomes being associated with duration of employment in the textile industry. Challenges in using current standard guidelines for identifying byssinosis were discussed.
OCCUPATIONAL AND ENVIRONMENTAL MEDICINE
(2023)
Article
Green & Sustainable Science & Technology
M. Asim Sarwar, Muhammad Irfan, Asif Nadeem Tabish, Haris Mahmood Khan, Muhammad Waqas Iqbal, Hira Fatima, Tanveer Iqbal
Summary: Pakistan, a farming and agricultural country, has been facing energy issues due to population growth and lack of technological development. This article explores the use of wood residue densification as an energy source and analyzes the effects of different pretreatments and binders on the densification process. The results show that densified pellets with a 5% natural binder exhibit better physical, mechanical, and thermal properties. This research highlights the potential of biomass materials for energy generation, offering insights towards meeting commercialization and population demands while mitigating the harmful effects of climate change.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2023)
Article
Environmental Sciences
Tausif Ahmad, Jibran Iqbal, Mohamad Azmi Bustam, Muhammad Babar, Muhammad Bilal Tahir, Muhammad Sagir, Muhammad Irfan, Hafiz Muhammad Anwaar Asghar, Afaq Hassan, Asim Riaz, Lai Fatt Chuah, Awais Bokhari, Muhammad Mubashir, Pau Loke Show
Summary: The critical challenge faced by our modern society is how to reduce the effects of climate change and global warming caused by CO2 emissions. This study investigates the adsorption potential of surface functionalized cerium oxide nanoparticles (CeNPs) for CO2 separation using deep eutectic solvents (DESs). The DESs were prepared using phosphonium-based compounds and were characterized before being used to functionalize the CeNPs. It was found that DES6-coated CeNPs showed higher adsorption performance for CO2 capture compared to DES3-coated CeNPs. This is likely due to the enhanced surface affinity between DES6-coated CeNPs and CO2 molecules, resulting in better mass transport characteristics and higher CO2 adsorption performance. These findings open up new research possibilities for reducing environmental effects of CO2 emissions through the use of DES surface-coated CeNPs.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Physical
Muhammad Irfan, Yousuf Khan, Atiq Ur Rehman, Naqeeb Ullah, Svetlana N. Khonina, Nikolay L. Kazanskiy, Muhammad A. Butt
Summary: In this paper, a perfect absorber with a photonic crystal cavity (PhC-cavity) is studied for carbon dioxide (CO2) gas sensing. The use of silver metallic structures enables plasmonic effects for achieving perfect absorption. The sensor consists of a PhC-cavity, silver (Ag) stripes, and a host functional material deposited on the sensor surface. By varying the concentration of CO2 gas, the refractive index of the host material changes, resulting in a shift in the resonant wavelength of the device. The sensor demonstrates high sensitivity and a figure of merit of 2.9 RIU-1 for CO2 gas detection.
Article
Multidisciplinary Sciences
Muhammad Irfan, Rishmail Saleem, Bilal Shoukat, Hammad Hussain, Shazia Shukrullah, Muhammad Yasin Naz, Saifur Rahman, Abdulnour Ali Jazem Ghanim, Grzegorz Nawalany, Tomasz Jakubowski
Summary: This study demonstrated the in-situ microwave pyrolysis of plastic waste using Zeolite Socony Mobil ZSM-5 catalyst, resulting in the production of hydrogen, liquid fuel, and carbon nanotubes. The use of activated carbon as a heat susceptor and moderate temperatures of 400-450 degrees C were employed. The effect of plastic composition, catalyst loading, and plastic type on the product yields was quantified.
SCIENTIFIC REPORTS
(2023)
Article
Mathematics, Interdisciplinary Applications
Kamran Kamran, Muhammad Irfan, Fahad M. M. Alotaibi, Salma Haque, Nabil Mlaiki, Kamal Shah
Summary: This article presents a method for numerical simulation of time-fractional diffusion equations, which combines the local meshless method based on a radial basis function (RBF) with Laplace transform. The proposed method first transforms the given problem into a time-independent inhomogeneous problem in the Laplace domain using Laplace transform, and then utilizes RBF-based local meshless method to solve the reduced problem in the Laplace domain. Finally, Stehfest's method is used to convert the solution back to the real domain. The method handles the fractional order derivative using Laplace transform, avoiding the computation of convolution integrals and overcoming the effects of time-stepping on stability and accuracy. The method is tested using four numerical examples, demonstrating its ease of implementation, accuracy, efficiency, and low computational costs.
FRACTAL AND FRACTIONAL
(2023)
Article
Engineering, Multidisciplinary
Mahnoor Sarfraz, Masood Khan, A. Al-Zubaidi, S. Saleem
Summary: This study investigates the characteristics of axisymmetric flows over a stretching and spiraling surface, considering the effects of uniform rotation, linear radial stretching, and hybrid nanofluids. The use of similarity transformation and MATLAB techniques enables the analysis of entropy generation and parameter impacts. These insights are crucial for optimizing fluid flow systems and understanding the influence of nanoparticle concentration and flow parameters on system efficiency.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Shahid Ali, Qingyou Yan, Azer Dilanchiev, Muhammad Irfan, Narmina Balabeyova
Summary: After COVID-19, financing for renewable energy reserves in emerging nations was considered crucial for sustainable development. Investing in biogas energy plants was found to have significant benefits in reducing fossil fuel usage. This study evaluates the investment intentions of individual investors in biogas energy plants in Pakistan through a survey. The aim of the study is to promote investment in biogas energy projects post-COVID-19. Using partial least squares structural equation modeling (PLS-SEM), the study focuses on financing biogas energy plants and examines the assumptions through purposive sampling. The findings suggest that attitudes, perceived benefits, investment attitudes, and supervisory structure evaluations influence the propensity to invest in biogas energy plants. Environmental responsiveness, monetary benefits, and risk aversion were also found to play a role. The study provides insights for policymakers on enhancing investments in biogas energy plants.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Kiran Batool, Zhen-Yu Zhao, Huaping Sun, Muhammad Irfan
Summary: Energy poverty has garnered global attention as it negatively impacts income, education, health, and the environment. However, there is a lack of research examining the linkages among these dimensions, particularly during the COVID-19 pandemic in Pakistan. To address this research gap, a study was conducted to analyze the relationship between these variables and test hypotheses. Survey data from university students was collected and analyzed using SPSS 26 for statistical description and correlation analysis, and AMOS 26 for constructing a structural equation model. The findings reveal that the COVID-19 pandemic exacerbates energy poverty in Pakistan, which in turn significantly influences income poverty, health poverty, educational poverty, and environmental poverty. The study concludes with practical suggestions based on the research findings.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Naila Nureen, Da Liu, Bilal Ahmad, Muhammad Irfan
Summary: Numerous Chinese manufacturing organizations are faced with the challenge of incorporating green information acquisition into their supply chain to improve their performance. This study investigates the impact of green information acquisition and institutional pressure on firm performance, using a moderated-mediation framework. The results show that absorptive capacity plays a significant role in mediating the relationship between green information acquisition and firm performance, while institutional pressure moderates this relationship. The findings suggest that Chinese manufacturing enterprises should enhance their absorptive capacity and monitor institutional pressure to benefit from green information acquisition.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Environmental Sciences
Atul Kumar Singh, Sharath Chandra Sathvik, Loganathan Krishnaraj, Muhammad Irfan, Varudhaiya Ranganath Prasath Kumar, Cem Isik
Summary: This study aims to evaluate the performance of thermophysical materials in the construction industry and provide an academic basis for understanding trends, developments, and current state of research in this field. The Scopus database was used to analyze 159 papers published between 1968 and 2021 from 60 countries. The International Organization for Standardization has provided significant information on thermal insulating materials, products, components, and applications. Different forms of insulation exist, including solid-state foam insulation, liquid-state insulation, and gasifier form, each with its own characteristics and considerations for energy efficiency.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Physics, Multidisciplinary
Tinggui Chen, Baizhan Xia, Dejie Yu, Chuanxing Bi
Summary: This study proposes a gradient phononic crystal structure for enhanced acoustic sensing. By breaking the symmetry of the PC structure, topologically protected edge states are introduced, resulting in topological acoustic rainbow trapping. The robustness and enhancement properties are verified numerically and experimentally.
