Top Research Papers on Fluid Mechanics

This book was developed using material from teaching courses on fluid mechanics, high-speed flows, aerodynamics, high-enthalpy flows, experimental methods, aircraft design, heat transfer, introduction to engineering, and wind engineering. It precisely presents the theoretical and application aspects of the terms associated with these courses. It explains concepts such as cyclone, typhoon, hurricane, and tornado, by highlighting the subtle difference between them. The text comprehensively introduces the subject vocabulary of fluid mechanics for use in courses in engineering and the physical sci...

The reprint collects research papers on mathematical and numerical modelling in fluid dynamics, discusses latest research developments in areas of fluid flows heat and mass transfer, and focuses on special topics and applications of tech-related real-world applications.

Any physical problem can be modeled by algebraic equations, differential equations, and partial differential equations. This formulation of the physical problem into mathematical equation is called mathematical modeling. The Navier–Stokes equations are the basic governing equations for the fluid mechanics problems. To apply the compressible flow equations to practical problems, one needs to have good exposure in fluid mechanics and heat transfer. The nondimensional equations help to keep the change in variables close to 1, and hence there is more stability during computing. Knowing the propert...

This textbook provides a coherent and structured overview of fluid mechanics, a discipline at the heart of most applications and human activities.

This Research Note presents several contributions and mathematical studies in fluid mechanics, namely in non-Newtonian and viscoelastic fluids and on the Navier-Stokes equations in unbounded domains. It includes review of the mathematical analysis of incompressible and compressible flows and results in magnetohydrodynamic and electrohydrodynamic stability and thermoconvective flow of Boussinesq-Stefan type. These studies, along with brief communications on a variety of related topics comprise the proceedings of a summer course held in Lisbon, Portugal in 1991. Together they provide a set of co...

This video gives an overview of how Machine Learning is being used in Fluid Mechanics. In fact, fluid mechanics is one of the original 'big data' sciences, and many advances in ML came out of fluids.

Computational Fluid Mechanics and Heat Transfer, Fourth Edition is a fully updated version of the classic text on finite-difference and finite-volume computational methods. Divided into two parts, the text covers essential concepts in the first part, and then moves on to fluids equations in the second. Designed as a valuable resource for practitioners and students, new examples and homework problems have been added to further enhance the student's understanding of the fundamentals and applications. Provides a thoroughly updated presentation of CFD and computational heat transfer Covers more ma...

Deep reinforcement learning (DRL) has recently been adopted in a wide range\nof physics and engineering domains for its ability to solve decision-making\nproblems that were previously out of reach due to a combination of\nnon-linearity and high dimensionality. In the last few years, it has spread in\nthe field of computational mechanics, and particularly in fluid dynamics, with\nrecent applications in flow control and shape optimization. In this work, we\nconduct a detailed review of existing DRL applications to fluid mechanics\nproblems. In addition, we present recent results that further ill...

In the past few decades various particle image–based volumetric flow measurement techniques have been developed that have demonstrated their potential in accessing unsteady flow properties quantitatively in various experimental applications in fluid mechanics. In this review, we focus on physical properties and circumstances of 3D particle–based measurements and what knowledge can be used for advancing reconstruction accuracy and spatial and temporal resolution, as well as completeness. The natural candidate for our focus is 3D Lagrangian particle tracking (LPT), which allows for position, vel...

An introduction and historical perspective of ML methods, in particular neural networks (NN), are provided and existing PIML applications to fluid mechanics problems are examined, especially in complex high Reynolds number flows.

The effectiveness of physics-informed neural networks (PINNs) for inverse problems related to three-dimensional wake flows, supersonic flows, and biomedical flows is demonstrated.

Spontaneous imbibition behavior gained popularity several decades ago which led to widely exploited application in fractured reservoirs. Recently the imbibition behavior of unconventional reservoirs has attracted a good number of researchers and field engineers to pay attention and research more on how to enhance recovery through imbibition behavior. Despite the numerous studies that have been conducted in this area, it is still controversial whether spontaneous imbibition behavior is applicable on reservoir stimulation especially for shale reservoir. In this paper, the recent works on the spo...

Abstract Fluid inclusion compositions obtained from laser ablation–inductively coupled plasma–mass spectrometry at the Haobugao Zn-Pb skarn in northeastern China provide constraints on fluid origin, evolution, and metal deposition mechanisms and an example of evaluating mineralization potential. Metal concentrations in the prograde fluids were high (up to 1.4 wt% Zn and 1.8 wt% Pb) but remained in solution, likely due to the high temperatures (440–575 °C) and salinities (35.4–45.3 wt% NaCl equivalent). Absolute concentrations of elements (e.g., Rb and Na) and mass ratios (e.g., Zn/Na and K/Na)...

Global demands for sustainable energy are rising rapidly due to the ever-increasing energy crisis. Efficient energy management is one of the feasible methods to solve the existing energy crisis, and has attracted extensive attention. Pulsating heat pipe (PHP), as a potential thermal management system, has broad application prospects due to its simple structure, low cost and excellent heat transfer performance. Numerous researchers are not only committed to enhance heat transfer performances of PHPs from the aspects of working fluids, but also to further understand the operation mechanisms. The...

Results indicated that the corrosion product film showed a laminated structure with complex layers, which were ZnO/Zn(OH)2, a Ca/P phase, zinc compounds, and a Ca-P phase from the inside out, respectively.

It is shown that immotile cilia at the node undergo asymmetric deformation along the dorsoventral axis in response to the flow, uncovering the biophysical mechanism by which ciliary force sensing is necessary, sufficient, and instructive for embryonic laterality.

Hidden fluid mechanics (HFM), a physics-informed deep-learning framework capable of encoding the Navier-Stokes equations into the neural networks while being agnostic to the geometry or the initial and boundary conditions, is developed.

Analysis of cerebrospinal fluid of patients with SARS-CoV-2 infection and neurological manifestations indicates a possible contribution of viral replication on triggering CNS infiltration by immune cells and the inflammation promoting neuronal injury.

An insight into the current state of the art of the use of DRL within fluid mechanics, focusing on control and optimal design problems.

The state-of-the-art architectures and their applications are reviewed, limitations are discussed, and future research opportunities are presented in terms of improving algorithms, considering causalities, expanding applications, and coupling scientific and deep learning solvers.

Most predictors of fluid responsiveness reliably predict the response of cardiac output to volume expansion in adult patients mechanically ventilated at tidal volumes ≤ 8 ml kg −1 .

Acknowledgements The authors acknowledge the School of Engineering at the University of Aberdeen for providing the required facilities to complete this review study; also, Ahmed Bashir would like to thank the Faculty of Engineering University of Khartoum, Sudan, for the financial support of his studies at the University of Aberdeen.

This study reviews rock-fluid interaction during the underground hydrogen process in depleted gas reservoirs. According to the review, although over 700 publications can be found in the literature related to rock-fluid interaction related to other deep-earth applications, only few studies have paid attention to underground hydrogen storage in depleted gas reservoirs. Rock-fluid interactions happen in various ways during underground hydrogen storage in depleted gas reservoirs, mainly: 1) geochemical interactions, called abiotic interactions, and 2) microbial activities, called biotic reactions....

Glymphatic clearance of potentially harmful metabolic or protein waste products, such as amyloid-β is primarily active during sleep, when its physiological drivers, the cardiac cycle, respiration, and slow vasomotion, together efficiently propel CSF inflow along periarterial spaces.

"With the appearance and fast evolution of high performance materials, mechanical, chemical and process engineers cannot perform effectively without fluid processing knowledge. The purpose of this book is to explore the systematic application of basic engineering principles to fluid flows that may occur in fluid processing and related activities.In Viscous Fluid Flow, the authors develop and rationalize the mathematics behind the study of fluid mechanics and examine the flows of Newtonian fluids. Although the material deals with Newtonian fluids, the concepts can be easily generalized to non-N...

The environmental engineer designs and/or specifies various systems in which gases are the fluid medium. Such gases include air, digester gas, molecular oxygen, chlorine, ozone, natural gas, and carbon dioxide. These gases are compressed, conveyed, dispersed, and diffused for a variety of purposes. Some gaseous systems, such as those providing molecular oxygenation, chlorination, and ozonation are largely manufacturer-designed, with the prime design engineer's role being mainly that of selection and specification. On the other hand, aeration systems, and to a lesser extent, digester gas system...

Expert researchers examine complex patterns of pressure, viscosity, and velocity in a CFD study of viscoelastic food inside hydrocyclones to obtain a detailed grasp of particle behavior and fluid dynamics. Velocity profiles show how fluids and particles flow through the hydrocyclone in complex ways, while pressure distributions show where high and low pressure is found, regions that are critical for maximizing separation efficiency. Furthermore, the analysis of viscosity fluctuations clarifies the intricate relationship between fluid rheology and flow dynamics, providing information on how foo...

Abstract Understanding the physical mechanisms governing fluid‐induced fault slip is important for improved mitigation of seismic risks associated with large‐scale fluid injection. We conducted fluid‐induced fault slip experiments in the laboratory on critically stressed saw‐cut sandstone samples with high permeability using different fluid pressurization rates. Our experimental results demonstrate that fault slip behavior is governed by fluid pressurization rate rather than injection pressure. Slow stick‐slip episodes (peak slip velocity < 4 μm/s) are induced by fast fluid injection rate, ...

This work extensively verified and validated the overall method against several benchmark cases, and demonstrated its excellent mass conservation and good overall performance for simulating evaporating two-fluid flows in two and three dimensions.

Fluid dynamics plays a crucial role in many cellular processes, including the locomotion of cells such as bacteria and spermatozoa. These organisms possess flagella, slender organelles whose time periodic motion in a fluid environment gives rise to motility. Sitting at the intersection of applied mathematics, physics and biology, the fluid dynamics of cell motility is one of the most successful applications of mathematical tools to the understanding of the biological world. Based on courses taught over several years, it details the mathematical modelling necessary to understand cell motility i...

A new frontier and the rich multiscale fluid physics, from interfacial to multiphase and complex flows, that govern contact between an infected source and a susceptible target in a range of diseases are highlighted.

The interaction of sound waves with the medium through which they pass can be used to investigate the thermophysical properties of that medium. With the advent of modern instrumentation, it is now possible to determine the speed and absorption of sound with extremely high precision and, through the dependence of those quantities on variables like temperature, pressure, and frequency to gain a sensitive measure of one or more properties of fluid. This has led to renewed interest in such measurements and in the extraction of thermophysical properties of gases and liquids there from. Physical Aco...

Male-female seminal fluid signaling is evident in all mammalian species investigated including human, and effects of seminal fluid in invertebrates indicate evolutionarily conserved mechanisms.

Shear thickening fluids (STFs) are a new type of nanosuspension, which are formed by dispersing micro and nanoparticles in a dispersant. STFs are easily deformed under the action of a low shear rate. However, they instantly transform into a hard solid-like state at a high shear rate. After the removal of the impact force, STFs revert to their original liquid state. During this process, STFs absorb a significant amount of impact energy. Hence, they can be employed as a buffer and for vibration reduction. In this study, a comprehensive review of existing literature on STFs is presented. First, t...

This book discusses methods currently available for solving problems in fluid mechanics and heat transfer and presents developments of finite volume method

The R.O.S.E. conceptual model (Resuscitation, Optimization, Stabilization, Evacuation) summarizes accurately a dynamic approach to fluid therapy, maximizing benefits and minimizing harms.

The host-to-host transmission of respiratory infectious diseases is fundamentally enabled by the interaction of pathogens with a variety of fluids (gas or liquid) that shape pathogen encapsulation and emission, transport and persistence in the environment, and new host invasion and infection. Deciphering the mechanisms and fluid properties that govern and promote these steps of pathogen transmission will enable better risk assessment and infection control strategies, and may reveal previously underappreciated ways in which the pathogens might actually adapt to or manipulate the physical and ch...

This book provides a state-of-art coverage on the recent developments in phase behavior modeling using the equation of state approaches

A stock of the data published in the field over the past three years is taken, including a review of the passive leg raising test, and the different stroke volume surrogates that have recently been described to measure its effects using minimally invasive and easily accessible methods.

It is concluded that the synergistic effect of organic additives, biodegradable vegetable base oils and recycling purification effectively reduces the environmental pollution of cutting fluids.