Article
Mechanics
Jaikishan Mansukhani, Arijeet Tripathy, Mahesh Kumar, Pranab Kumar Mondal
Summary: This article discusses a novel bioinspired pumping mechanism for non-Newtonian fluids in a microfluidic configuration. By employing lubrication theory and perturbation technique, the study examines the flow structure and net flow rate during the contraction-expansion process of a membrane. The results highlight the significant impact of fluid rheology and membrane kinematics on the pumping capacity.
Article
Mechanics
Jianxun Zhu, Fengjian Jiang, Lars Erik Holmedal
Summary: The study investigates the three-dimensional flow past an elliptic cylinder with an aspect ratio of 0.5 near a moving bottom wall, analyzing the transition between two- and three-dimensional flow regimes for different gap ratios. The flow behavior shows a progression from two-dimensional to three-dimensional with various instabilities and vorticity patterns depending on the gap ratio and Reynolds number.
Article
Mechanics
Mahesh Kumar, Jaikishan Mansukhani, Arijeet Tripathy, Pranab Kumar Mondal
Summary: We discuss the bioinspired pumping mechanism in a microfluidic configuration. By demonstrating the kinematics of the proposed membrane function and describing the wall profile developed due to the expansion-contraction phases, we establish that a channel equipped with a single elastic membrane can act as a micropump. We analyze the flow dynamics and show the increased net throughput obtained from the proposed configuration.
Article
Engineering, Marine
Cuong Mai Bui, Thinh Xuan Ho
Summary: This study numerically investigates the flow characteristics of kaolinite mixed with water passing a cylinder near a moving wall. The results show that the flow regime is influenced by the gap ratio, Reynolds number, and Bingham number. At small gaps, the drag and lift coefficients increase with decreasing gap size.
Article
Mechanics
A. A. Avramenko, I. Shevchuk, A. Tyrinov, M. M. Kovetskaya, N. P. Dmitrenko
Summary: This article presents the results of studying the flow of a Newtonian fluid in a narrow wedge-shaped slot with a moving wall and obtaining a solution for slip boundary conditions. The study shows the influence of slip conditions on flow parameters and identifies different types of flow in the diverging and converging sections of the channel.
Article
Thermodynamics
Nawaf Alkhamis, Majed Alhazmy
Summary: This study presents a numerical simulation for multicomponent flow inside the Ethylene oxide micro-reactor channel, showing that the presence of V-shape ribs improves the process of ethylene oxide production.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Mechanics
Sumit Kumar Mehta, Rahul Kakati, Ayaz Rahman, Pranab Kumar Mondal, Somchai Wongwises
Summary: This study numerically analyzes the impact of electroosmotic vortex and fluid rheology on the chemical reaction characteristics of species, focusing on biochemical applications and relevant physical properties. The results show that the formation of vortices in the microreactor enhances the ability of reactant species to react, increasing convective mixing strength. Additionally, the fluid rheology significantly affects the reaction characteristics.
Article
Chemistry, Physical
Priyanka Koner, Subrata Bera, Hiroyuki Ohshima
Summary: The theoretical analysis of the mass transfer process in an oscillatory electroosmotic flow (EOF) is studied in a fractional Jeffrey fluid model with a polyelectrolyte layer (PEL) coated cylindrical annulus. The ion partitioning effect is observed due to the difference in permittivity between PEL and the electrolyte solution. Analytical solutions for induced potential and axial velocity are presented for both the PEL and electrolyte regions. The separation of species depends on various factors such as the Damkohler number, absorption parameter, and phase partitioning coefficient.
Article
Mechanics
Saurabh Kukreti, Nikhil Kumar Singh
Summary: This paper numerically investigates the effect of aspect ratio (AR) on flow characteristics around an elliptical cylinder near a moving wall. Two-dimensional simulations are conducted to analyze the influence of AR in conjunction with gap ratio (GR), Reynolds number (Re), and angle of attack (AOA). The results show significant differences in the wake pattern and critical Reynolds number for steady to unsteady wake transition at low AR, compared to high AR cylinders. The location of separation and stagnation points are affected by the interplay of AR and wall suppression, as well as the AOA. The variations in drag and lift forces with AR for different AOA are also discussed.
Article
Mathematics, Applied
Dolat Khan, Poom Kumam, Wiboonsak Watthayu, Mansour F. Yassen
Summary: This article focuses on the multi fractional comparative study of entropy generation of magnetohydrodynamic flow of Casson nanofluid with slipping and ramped wall heating. Different fractional derivative models are used and the entropy production and Bejan number of Casson nanofluid are compared. The results indicate that the proportional Caputo hybrid model is more suitable for ramped wall temperature conditions, while the other two fractional derivative models are more suitable for isothermal wall temperature conditions.
ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK
(2023)
Article
Mechanics
Zhenlin Xie, Haibao Hu, Jiangli Chen, Jian Song, Tianyang Lu, Feng Ren
Summary: In this study, a numerical investigation using deep reinforcement learning for active flow control (AFC) on two tandem cylinders at a low Reynolds number of 100 is conducted. An optimal AFC strategy is trained to suppress 75% of the lift fluctuation in the downstream cylinder by modifying the phase difference between the lift fluctuations of the two cylinders. The results show that the effect of the additional lift from the upstream cylinder is significantly reduced, providing new insights into the problem of AFC under disturbed incoming flow.
Article
Thermodynamics
Sayer Obaid Alharbi
Summary: The study found that considering partial slip and jump in wall temperature in hybrid nanofluid can improve the thermal performance compared to regular nanofluid, while also reducing shear stress on the wall. The use of hybrid nanofluid is recommended to optimize the working fluid's thermal performance.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Mechanics
Hongjun Zhu, Tang Tang, Honglei Zhao, Yue Gao, Xu Zhang
Summary: This study experimentally investigates the vortex-induced vibration (VIV) and wall impact of a near-wall flexible pipe in a water flume. The results show that the gap ratio has a significant effect on VIV and wall impact, and different wall impact patterns are identified.
Article
Multidisciplinary Sciences
Anber Saleem, Aleesha Qaiser, Sohail Nadeem, Mehdi Ghalambaz, Alibek Issakhov
Summary: This article investigates the peristaltic transport of a compressible Jeffrey fluid with compliant wall over a porous medium under the effect of a magnetic field. Perturbation technique was used to compute the net axial velocity up to second order, and the effects of various parameters on velocity distribution and axial velocity were discussed graphically.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2021)
Article
Chemistry, Physical
Tawseef Ahmad Wani, Parul Garg, Priya Kaith, Ashok Bera
Summary: This report presents a cuboid-shaped interfacial solar steam generator that can generate electricity and freshwater simultaneously from saltwater. With a high evaporation efficiency of 88%, the device can continuously generate sufficient power to light an LED without any energy storage devices.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Review
Multidisciplinary Sciences
Richard H. Clayton, Yasser Aboelkassem, Chris D. Cantwell, Cesare Corrado, Tammo Delhaas, Wouter Huberts, Chon Lok Lei, Haibo Ni, Alexander V. Panfilov, Caroline Roney, Rodrigo Weber dos Santos
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2020)
Review
Multidisciplinary Sciences
Chon Lok Lei, Sanmitra Ghosh, Dominic G. Whittaker, Yasser Aboelkassem, Kylie A. Beattie, Chris D. Cantwell, Tammo Delhaas, Charles Houston, Gustavo Montes Novaes, Alexander V. Panfilov, Pras Pathmanathan, Marina Riabiz, Rodrigo Weber dos Santos, John Walmsley, Keith Worden, Gary R. Mirams, Richard D. Wilkinson
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2020)
Article
Mechanics
Dharmendra Tripathi, V. K. Narla, Yasser Aboelkassem
Article
Computer Science, Interdisciplinary Applications
Yasser Aboelkassem, Dragana Savic
Summary: This study introduces a new PSO method for computing parameters in the arterial blood flow model, showing efficiency and accuracy in parameter optimization. By optimizing the parameters, the method is able to recover the pressure waveform in the aorta, offering new possibilities for research in arterial blood flow network.
COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE
(2021)
Article
Engineering, Multidisciplinary
Krishnashis Chatterjee, Philip M. Graybill, John J. Socha, Rafael Davalos, Anne E. Staples
Summary: The research shows that microfluidic devices designed by mimicking insect respiratory kinematics can control flow rate and direction without internal valves, and achieve selective response of individual channels to a single global actuation frequency.
BIOINSPIRATION & BIOMIMETICS
(2021)
Article
Physiology
Mohamed A. Bahloul, Yasser Aboelkassem, Taous-Meriem Laleg-Kirati
Summary: This study models the blood flow dynamics in human arteries with hypertension disease using fractional calculus. The proposed mathematical model offers flexibility in characterizing the arterial complex network and improves the understanding of the structural and functional changes in the arteries due to hypertension.
FRONTIERS IN PHYSIOLOGY
(2022)
Article
Engineering, Multidisciplinary
Max R. Mikel-Stites, Mary K. Salcedo, John J. Socha, Paul E. Marek, Anne E. Staples
Summary: Although most organisms use neurological structures to amplify sounds for sound localization, the parasitoid fly Ormia ochracea has mechanically coupled hearing organs that allow it to accurately locate sound sources. Previous models of Ormia ochracea's hearing mechanics have limitations at higher sound angles, but a new quasi-two-dimensional (q2D) model incorporating morphology-based features significantly improves accuracy (average errors under 10%). This improved biomechanical model could inform the design of new microscale directional microphones and small-scale acoustic sensor systems.
BIOINSPIRATION & BIOMIMETICS
(2023)
Article
Mechanics
Yasser Aboelkassem
Summary: This study developed numerical simulation and theoretical solution for the electro-osmotic pumping flow in a microchannel with squeezing and charged walls. The mathematical model was derived based on a strong coupling between the nonlinear Poisson-Boltzmann equation and the flow lubrication theory. The effects of various parameters on the fluid pressure distribution, velocity field, and net flow rate were investigated, and it was found that the induced pumping rate depends strongly on the combined effects of multiple factors.
Article
Ecology
Dharmendra Tripathi, Dinesh Bhandari, Rakesh Kumar, Yasser Aboelkassem
Summary: In this paper, a mathematical model was developed to simulate the transport of viruses in a viscous background flow driven by natural pumping. The model considered two types of respiratory pathogens viruses (SARS-CoV-2 and Influenza A). The virus spread in axial and transverse directions was examined using the Eulerian-Lagrangian approach. Effects of gravity, virtual mass, Basset force, and drag forces on virus transport velocity were studied using the Basset-Boussinesq-Oseen equation. The results highlighted the significant role of forces acting on spherical and non-spherical particles in the virus transmission process. High viscosity was found to slow down virus transport dynamics, while small-sized viruses were identified as highly dangerous and capable of rapid propagation through blood vessels. The mathematical model presented in this study contributes to a better understanding of virus spread dynamics in blood flow.
JOURNAL OF BIOLOGICAL DYNAMICS
(2023)
Editorial Material
Environmental Sciences
Anne E. Staples, Laura A. Miller, Shilpa Khatri, Md Monir Hossain
FRONTIERS IN MARINE SCIENCE
(2023)
Meeting Abstract
Biophysics
Yasser Aboelkassem
BIOPHYSICAL JOURNAL
(2023)
Review
Engineering, Biomedical
Quinn Counseller, Yasser Aboelkassem
Summary: Cardiac imaging techniques such as x-ray, CT, MRI, echocardiogram, PET/SPECT allow physicians to detect various heart abnormalities and study the heart's physiology, performance, structure, and function. Technological advancements have provided even more tools for investigating the heart. This review study focuses on MRI and CT, discussing their origin, benefits, downfalls, clinical application, and future advancements in cardiac imaging.
FRONTIERS IN MEDICAL TECHNOLOGY
(2023)
Article
Physics, Fluids & Plasmas
Mahmoud Abdelgalil, Yasser Aboelkassem, Haithem Taha
Summary: The navigation strategy of sperm cells, specifically sea urchin sperm, is a natural implementation of an adaptive control paradigm known as extremum seeking. This discovery deepens our understanding of microorganism taxis and may guide the development of bioinspired miniaturized robots with minimal sensors.
Proceedings Paper
Engineering, Biomedical
Mohamed A. Bahloul, Yasser Aboelkassem, Taous-Meriem Laleg-Kirati
Summary: Arterial compliance plays a crucial role in cardiovascular function, and fractional calculus can accurately describe the complex properties of arterial blood vessels.
2021 43RD ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE & BIOLOGY SOCIETY (EMBC)
(2021)
Meeting Abstract
Zoology
M. R. Mikel-Stites, M. K. Salcedo, J. J. Socha, A. E. Staples
INTEGRATIVE AND COMPARATIVE BIOLOGY
(2021)
