Article
Nanoscience & Nanotechnology
Zainab Bukhari, Amjad Ali, Zaheer Abbas, Hamayun Farooq
Summary: This article presents a numerical investigation of the pulsatile flow of non-Newtonian Casson fluid through a rectangular channel with symmetrical local constriction on the walls under an applied magnetic field and thermal radiation. The study may find its application in devising treatments for stenosis in blood arteries, designing biomechanical devices, and controlling industrial processes with flow pulsation. The impacts of various parameters on flow profiles, such as the Hartman number, Strouhal number, Casson fluid parameter, porosity parameter, Prandtl number, and thermal radiation parameter, are discussed.
Article
Mechanics
Qingrui Meng, Hongwei An, Liang Cheng, Mehrdad Kimiaei
Summary: Numerical investigation on wake transitions behind an isolated cube revealed four different flow regimes and their evolution patterns. The study also identified the transition mechanisms between vortex shedding states and the critical Reynolds numbers for bifurcations to different regimes.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Engineering, Marine
Jiunn-Shyang Chiou, Jing Ling Ng
Summary: This study applies Newtonian and non-Newtonian Bingham models to simulate lateral flow of liquefied soil and investigates the parameters and boundary conditions of the models. It derives analytical solutions and conducts numerical analyses to study the behavior of liquefied soil under different conditions.
Article
Engineering, Multidisciplinary
Zaheer Abbas, Sifat Hussain, Jafar Hasnain, Amir Nadeem, Amar Rauf
Summary: This study investigates the flow of Casson fluid with homogeneously distributed dust particles streaming through a porous zone in a permeable channel. The flow is oscillatory and subjected to thermal radiation. The channel is under transverse magnetic flux control, with non-uniform temperature and velocity slip at the wall. The variable separation approach is used to obtain the exact analytic solution for the flow fields of fluid and dust particles. The results reveal the effects of suction/injection, magnetic field, thermal radiation, and buoyancy force on the fluid velocity, temperature, rate of heat transport, and friction at the wall surface, as examined and analyzed graphically.
INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION
(2023)
Article
Engineering, Civil
Nickolas Martin Brown, Morteza Dejam
Summary: This study mathematically derived and studied the tracer dispersion in hydraulic fractures with different geometries and porous walls for non-Newtonian fluid flows. The study found that the coefficient of the shear dispersion term follows a certain order for different geometrical models and flow behaviors. The study also emphasized the importance of considering the communication between hydraulic fractures and the rock matrix for determination of tracer dispersion. The findings of this study can pave the way for future investigations on tracer dispersion in hydraulic fractures with rough and porous walls.
JOURNAL OF HYDROLOGY
(2023)
Article
Mathematics
Gerasim Vladimirovich Krivovichev
Summary: The paper compares different one-dimensional models of blood flow, taking into account the non-Newtonian property of blood. It analytically solves the simplified nonlinear problem for a semi-infinite vessel with constant properties and compares the solutions for different models. The effects of velocity profile flattening and hematocrit value on deviation from the Newtonian model are investigated.
Article
Mathematics, Applied
Sergey Ershkov, Dmytro Leshchenko
Summary: In this research, we have revisited the mathematical modeling approach for rivulet flows on inclined surfaces using viscous-plastic theory in Cartesian coordinates. We have obtained a semi-analytical solution for nonstationary creeping approximation of plane-parallel flow. The main motivation of this study is to improve the accuracy of calculations for possible applications in fluid dynamics research in technological or engineering areas. Despite the difficulty in solving the equations of motion for non-Newtonian fluids, we have successfully obtained analytical expressions for velocity components in the directions of motion for slowly moving rivulet flows.
MATHEMATICAL METHODS IN THE APPLIED SCIENCES
(2022)
Article
Biophysics
Van Lap Nguyen, Hiromichi Obara
Summary: In order to ensure the functional properties of an organ generated through decellularization and recellularization, it is important to maximize the initial density and distribution of seeding cells in the parenchymal space. However, achieving a uniform distribution of cells is challenging due to vessel occlusion. This study used a combination of the EPA model, CFD, and DEM to assess vessel occlusion during recellularization under different conditions and provide insights for optimizing the process.
BIOMECHANICS AND MODELING IN MECHANOBIOLOGY
(2023)
Article
Physics, Fluids & Plasmas
Santiago G. Solazzi, Beatriz Quintal, Klaus Holliger
Summary: This work presents a numerical approach to model the attenuation and modulus dispersion of compressional waves due to squirt flow in porous media saturated by Maxwell-type non-Newtonian fluids. The results show that wave signatures strongly depend on the Deborah number, with larger values leading to increased attenuation and a shift towards higher frequencies.
Article
Engineering, Multidisciplinary
Zahra Keshtkar Mizuji, Majid Ghadiri, Ali Rajabpour, Mehrdad Farajzadeh Ahari, Asghar Zajkani, Sina Yazdinia
Summary: This study investigates the dynamic and vibrational behavior of cylindrical nanotubes conveying fluid and moving particles. The mathematical modeling takes into account the first-order shear deformation theory, the nonlocal strain gradient theory, and the simply supported boundary condition. The governing equation is derived using Hamilton's principle and solved using the Newmark technique. The simulation results are compared with an analytical model, and the system behavior is examined in relation to fluid flow, moving nanoparticles, and a viscoelastic basis.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Engineering, Chemical
Haifeng Lu, Yao Bian, Zongtao Wang, Xiaolei Guo, Haifeng Liu, Jiakun Cao, Kaichen Qu
Summary: Rheological study of powder flow is a hot topic in recent years. This paper provides a novel alternative method for powder rheological characterization using glass beads, pulverized coal and alumina as experimental materials. The relationship between differential pressure and particle velocity reveals the non-Newtonian rheological behaviors of powders.
Article
Mechanics
Yue Li, Jinlei Mu, Chengwang Xiong, Zizheng Sun, Caiyun Jin
Summary: This study examines the influence of rheological parameters on the properties of fresh cement mortar fluid through different curvatures of a pipe bend. The results show that sharper curvatures and higher power-law indexes can reduce the asymmetric unyielded zone, while increased yielding stress and power-law index lead to greater total pressure drop and additional pressure loss.
Article
Mechanics
Zhi Zheng, Peng Wang, Naihu He, Qiaorui Si, Guidong Li, Daolin Du, Jianpin Yuan
Summary: This study investigated the irreversible energy losses in different sections of propeller blades. The results showed that the total mechanical energy loss occurred mainly in the propeller region and was influenced by the operation speed. Additionally, rheology had a significant impact on the equivalent-volume velocity field, leading to insufficient mixing in the anaerobic digestion system.
Article
Engineering, Chemical
Shuai Tian, Fenny Jie Chen, Juan Dang
Summary: Mechanical oscillations can significantly modify the friction factor of non-Newtonian fluids in a pipe, with longitudinal oscillation being the most effective, while rotational oscillation has the least impact. The study does not observe any effect on the flow of Newtonian fluids due to superimposed mechanical oscillations.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Engineering, Multidisciplinary
Shima Nesari Haghighi Fard, Mohammad Najafi, Vali Enjilela, Ali Imam, Arash Karimipour
Summary: In this study, a computer code is developed to enhance the capability of the meshless local Petrov-Galerkin method in solving nonNewtonian fluid flow problems. The newly developed code successfully simulates and solves two-dimensional laminar incompressible power-law cases for the first time using the mesh-free method. The code demonstrates good performance in handling power-law fluid flow problems for different indices, based on comparisons with conventional mesh-based methods for benchmarking cases.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Engineering, Chemical
L. Ranganatha Swamy, N. R. Banapurmath, T. K. Chandrashekar, Manzoore Elahi M. Soudagar, M. Gul, Nik-Nazri Nik-Ghazali, M. A. Mujtaba, Kiran Shahapurkar, Umit Agbulut, Hashim M. Alshehri, A. M. Sajjan, Marjan Goodarzi
Summary: The use of oxygenated fuels as a substitute for diesel fuel in engines can effectively reduce emissions, but it also leads to increased NOx emissions, inferior HC and CO emissions, and shortened ignition delay and combustion duration.
CHEMICAL ENGINEERING COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Reza Alian Moghadam, S. Mohammad Sajadi, Nidal H. Abu-Hamdeh, Smain Bezzina, Rasool Kalbasi, Arash Karimipour, Ferial Ghaemi, Dumitru Baleanu
Summary: This study investigates the adsorption process of H2O molecules by a porous carbon matrix in the presence of NaCl impurities using molecular dynamics method. The results show that increasing impurities in atomic structures decrease the adsorption capacity of the porous carbon matrix for H2O molecules.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Xinglong Liu, Moram A. Fagiry, S. Mohammad Sajadi, Radwan A. Almasri, Arash Karimipour, Zhixiong Li, Dumitru Baleanu, Ferial Ghaemi
Summary: The computational procedure was utilized to investigate the size effect of Fe3O4 nanoparticles on atomic behavior and phenomena of nanoparticles accumulation in a nanochannel under an external magnetic field. The study revealed that the size of nanoparticles played a significant role in the accumulation process, and the presence of an external magnetic field could postpone this event.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Mohammad Behzad Botlani Esfahani, S. Mohammad Sajadi, Nidal H. Abu-Hamdeh, Smain Bezzina, Ali Abdollahi, Arash Karimipour, Ferial Ghaemi, Dumitru Baleanu
Summary: The study examined the effects of different concentrations of silver nanoparticles on pool boiling inside deionized water, finding that adding silver nanoparticles can reduce the boiling heat transfer coefficient under certain conditions. Additionally, increasing the concentration can decrease deviations in the boiling heat transfer coefficient at low heat fluxes and increase it at high heat fluxes.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Mahsa Mohammadi, Milad Massoudifarid, Mohammad Hojaji, Arash Karimipour, Jungho Hwang, Massoud Massoudi Farid
Summary: In this study, particle resolved calculations were used to investigate the laminar, incompressible, unsteady oscillatory flow and convective heat transfer of nanofluid around a porous cuboid. The effects of various factors such as Reynolds number, volume fraction of nanoparticles, aspect ratio of the cuboid, Darcy number and inlet velocity profile were examined. The results demonstrated that increasing Reynolds number enhanced thermal performance, increasing volume fraction of nanoparticles increased Nusselt number but also led to a stronger increase in pressure drop coefficient, and increasing aspect ratio of the cuboid improved both heat transfer and pressure drop coefficient. The optimal frequency for heat transfer and pressure drop was found to be 9.
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES
(2022)
Article
Green & Sustainable Science & Technology
Wasim Jamshed, Abdullah K. Alanazi, Siti Suzilliana Putri Mohamed Isa, Ramashis Banerjee, Mohamed R. Eid, Kottakkaran Sooppy Nisar, Hashem Alshahrei, Marjan Goodarzi
Summary: This article investigates the working function and performance of parabolic trough solar collector (PTSC) in solar aircraft wings. By analyzing the heat transfer in a tangent hyperbolic hybrid nanofluid (THHNF), which contains Copper (Cu) and Silica (SiO2) nanoparticles in viscous fluid, it is found that the hybrid nanofluid exhibits better performance in heat transmission compared to conventional nanofluid.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
Saeed Aghakhani, Masoud Afrand, Arash Karimipour, Rasool Kalbasi, Mohammad Mehdi Razzaghi
Summary: This article presents a modeling study on the cooling of solar panels using a copper tube. The study considers various variables such as tube diameter, number of loops, and flow rate to optimize the performance of the solar panels. The results indicate the conditions that result in the highest electrical efficiency, thermal efficiency, and overall efficiency.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Chemistry, Physical
Mohamad Shahgholi, Arash Karimipour, Pouya Firouzi, Omid Malekahmadi, Majid Ghashang, Nasier Saadoon, Noor H. Obaid, Shaghayegh Baghaei
Summary: With advances in thermal science, this research focuses on the development of biomedical liquid-flow devices, specifically in the field of dental implant surgery. The study investigates the application of a reinforced hydroxyapatite and titanium dioxide composite in dental implants. Characterization tests and heat transfer investigations were conducted, and an artificial neural network model was trained to predict heat transfer in nanofluids. The research demonstrates that the hydroxyapatite-ethanolamine-titanium dioxide composite shows acceptable heat transfer and physical properties for dental implant applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Navid Habibollahi, Ali Abdollahi, Arash Karimipour, Davood Toghraie, Sobhan Emami
Summary: This study investigated the combustion behavior of AlH3 structures coated with various atomic coatings in a liquid oxygen environment. The results showed that adding atomic coatings improved the combustion behavior, increasing the potential energy rates and decreasing the combustion time of the simulated structures. Different coatings resulted in changes in temperature and the number of permeated oxygen atoms.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Materials Science, Multidisciplinary
Mohamad Shahgholi, Pouya Firouzi, Omid Malekahmadi, Sepideh Vakili, Arash Karimipour, Majid Ghashang, Woorod Hussain, Hawraa A. Kareem, Shaghayegh Baghaei
Summary: This study aims to improve the mechanical and thermal properties of SiO2 dental composites by incorporating reinforced-hydroxyapatite nano-powder. The results demonstrate that the addition of hydroxyapatite significantly enhances the mechanical properties and thermal conductivity of the composites.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Green & Sustainable Science & Technology
Raad Z. Homod, Hussein Togun, Adnan A. Ateeq, Fadhel Noraldeen Al-Mousawi, Zaher Mundher Yaseen, Wael Al-Kouz, Ahmed Kadhim Hussein, Omer A. Alawi, Marjan Goodarzi, Goodarz Ahmadi
Summary: This study proposes a hybrid layer structure model to overcome the challenges in modeling the performance of cooling coils. The model combines two optimization methods and shows good control performance in saving energy and cost for HVAC systems. It is suitable for estimating energy and cost savings, and can evaluate the response of different output flows when changing independent variables.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Green & Sustainable Science & Technology
Mashhour A. Alazwari, Masood Ashraf Ali, Mohammed Algarni, Eman Alzahrani, Mouna Jeridi, Marjan Goodarzi
Summary: In this study, the problem of 2-D heat transfer on a long cylindrical vessel made of functionally graded material (FGM) was investigated using an analytical method. The obtained analytical solution shows the flexibility of temperature distribution by using functionally graded material.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Thermodynamics
Iman Bashtani, Javad Abolfazli Esfahani, Kyung Chun Kim
Summary: The present investigation evaluates the effects of bio-inspired Dolphin's dorsal fin turbulators in a counter flow double pipe heat exchanger. The results show that the streamlined geometry of the turbulator reduces friction loss and improves heat transfer by destroying the boundary layer.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Seyed Mahdi Ekrani, Shayan Ganjehzadeh, Javad Abolfazli Esfahani
Summary: The present study improves the thermal-hydraulic performance of a circular tube equipped with a delta winglet vortex generator by using a numerical model, investigating two additional parameters, and developing a support vector regression (SVR) for prediction and optimization. The presence of delta winglets disrupts the boundary layer and creates swirling flow, leading to enhanced heat transfer but also increased pressure drop. The addition of SiO2 as a nanofluid further enhances heat transfer. The results of this study provide insights into the best arrangement of delta winglets for a tubular heat exchanger.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Engineering, Mechanical
Golnaz Zarabian Ghaeini, Mohammad Parsa Ghofrani Maab, Sayed Mehrdad Bathaei, Mirae Kim, Javad Abolfazli Esfahani, Kyung Chun Kim
Summary: Ammonia is a promising carbon-free fuel and hydrogen carrier. Blending it with hydrogen can address its low flammability issue. However, there is a lack of microscale data on ammonia combustion. This study uses numerical simulations to investigate the stable flame region, NOx emission, and combustion efficiency of ammonia/hydrogen blends in micro-combustors. The findings suggest that a stable flame cannot be achieved at very low or high inlet velocities, and when the hydrogen fraction is below 60% in the fuel. It is recommended to reduce the inlet velocity to improve combustion efficiency when a higher percentage of ammonia is required in the fuel.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2023)
