View article: Numerical Heat Transfer and Fluid Flow
Numerical Heat Transfer and Fluid Flow Open
The Special Issue "Numerical Heat Transfer and Fluid Flow 2022" contains scientific articles on experiments and simulations of heat transfer in compressible and incompressible fluids, including single- and two-phase flows. The articles pre…
View article
New fractional derivatives with nonlocal and non-singular kernel: Theory and application to heat transfer model Open
In this manuscript we proposed a new fractional derivative with non-local and\n no-singular kernel. We presented some useful properties of the new derivative\n and applied it to solve the fractional heat transfer model.
View article
Applied Mechanics and Materials Open
[EN] This work reports on the analysis of thin-film copper¿indium¿gallium¿diselenide (CIGS) \nsolar cells by using Solar Cell Capacitance Simulator software (SCAPS). We have modeled a PV device, which consists in a CIGS absorber, a CdS buf…
View article
Modules for Experiments in Stellar Astrophysics ( ): Convective Boundaries, Element Diffusion, and Massive Star Explosions Open
We update the capabilities of the software instrument Modules for Experiments in Stellar Astrophysics ( MESA ) and enhance its ease of use and availability. Our new approach to locating convective boundaries is consistent with the physics …
View article
Hidden fluid mechanics: Learning velocity and pressure fields from flow visualizations Open
Machine-learning fluid flow Quantifying fluid flow is relevant to disciplines ranging from geophysics to medicine. Flow can be experimentally visualized using, for example, smoke or contrast agents, but extracting velocity and pressure fie…
View article
Modern Compressible Flow: With Historical Perspective Open
1 Compressible Flow - Some History and Introductory Thoughts 2 Integral Forms of the Conservation Equations for Inviscid Flows 3 One-Dimensional Flow 4 Oblique Shock and Expansion Waves 5 Quasi-One-Dimensional Flow 6 Differential Conservat…
View article
Modules for Experiments in Stellar Astrophysics (MESA): Pulsating Variable Stars, Rotation, Convective Boundaries, and Energy Conservation Open
We update the capabilities of the open-knowledge software instrument Modules for Experiments in Stellar Astrophysics ( MESA ). RSP is a new functionality in MESAstar that models the nonlinear radial stellar pulsations that characterize RR …
View article
Reynolds averaged turbulence modelling using deep neural networks with embedded invariance Open
There exists significant demand for improved Reynolds-averaged Navier–Stokes (RANS) turbulence models that are informed by and can represent a richer set of turbulence physics. This paper presents a method of using deep neural networks to …
View article
Applications of Continuous-Flow Photochemistry in Organic Synthesis, Material Science, and Water Treatment Open
Continuous-flow photochemistry in microreactors receives a lot of attention from researchers in academia and industry as this technology provides reduced reaction times, higher selectivities, straightforward scalability, and the possibilit…
View article
Submesoscale currents in the ocean Open
This article is a perspective on the recently discovered realm of submesoscale currents in the ocean. They are intermediate-scale flow structures in the form of density fronts and filaments, topographic wakes and persistent coherent vortic…
View article
Particle Image Velocimetry for MATLAB: Accuracy and enhanced algorithms in PIVlab Open
PIVlab is a free toolbox and app for MATLAB®. It is used to perform Particle Image Velocimetry (PIV) with image data: A light sheet illuminates particles that are suspended in a fluid. A digital camera records a series of images of the ill…
View article
Ventilator-related causes of lung injury: the mechanical power Open
The mechanical power equation may help estimate the contribution of the different ventilator-related causes of lung injury and of their variations. The equation can be easily implemented in every ventilator's software.
View article
Research on the Impact of Geopolitical Instability on Russian Trade Open
This study examines how global and country- specific geopolitical instability affects Russian trade using data from 1996 to 2021. A panel regression model analyzes trade between Russia and its 15 top trading partners, exploring both direct…
View article
Investigating Non-Newtonian Fluid Behavior in Hydrocyclones Via Computational Fluid Dynamics Open
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…
View article
Instantaneous Wave-free Ratio versus Fractional Flow Reserve to Guide PCI Open
Among patients with stable angina or an acute coronary syndrome, an iFR-guided revascularization strategy was noninferior to an FFR-guided revascularization strategy with respect to the rate of major adverse cardiac events at 12 months. (F…
View article
Mechanics of Fluids Open
Contents Preface to the eighth edition 1 Fundamental Concepts Problems 2 Fluid Statics Problems 3 The Principles Governing Fluids in Motion Problems 4 The Momentum Equation 5. Physical Similarity and Dimensional Analysis Problems 6 Laminar…
View article
Flow cytometry: basic principles and applications Open
Flow cytometry is a sophisticated instrument measuring multiple physical characteristics of a single cell such as size and granularity simultaneously as the cell flows in suspension through a measuring device. Its working depends on the li…
View article
Journal of Theoretical and Applied Mechanics Open
Along with increasing dimensions, speed, and output of modern machines, many newly appearing problems are being encountered in design and manufacturing of such machines.Vibrations occuring in certain technological processes create undesira…
View article
Fundamentals of Multiphase Flow Open
This chapter introduces the fundamentals of multiphase flow through flowlines focused on the transport of hydrocarbons. The flow field of multiphase flow, even for the simpler gas–liquid flows considered in this book, is extraordinarily co…
View article
A review on the angle of repose of granular materials Open
The abundance of granular materials and powders that are being used in several fields, along with their broad applications, requires a comprehensive understanding of both their macro- and micro-mechanical behavior. The fabric and structura…
View article
Experimental and theoretical study of wind turbine wakes in yawed conditions Open
This work is dedicated to systematically studying and predicting the wake characteristics of a yawed wind turbine immersed in a turbulent boundary layer. To achieve this goal, wind tunnel experiments were performed to characterize the wake…
View article
Fracture and adhesion of soft materials: a review Open
Soft materials are materials with a low shear modulus relative to their bulk modulus and where elastic restoring forces are mainly of entropic origin. A sparse population of strong bonds connects molecules together and prevents macroscopic…
View article
Deep learning in fluid dynamics Open
It was only a matter of time before deep neural networks (DNNs) – deep learning – made their mark in turbulence modelling, or more broadly, in the general area of high-dimensional, complex dynamical systems. In the last decade, DNNs have b…
View article
Plant resistance to drought depends on timely stomatal closure Open
Stomata play a significant role in the Earth's water and carbon cycles, by regulating gaseous exchanges between the plant and the atmosphere. Under drought conditions, stomatal control of transpiration has long been thought to be closely c…
View article
Model Reduction for Flow Analysis and Control Open
Advances in experimental techniques and the ever-increasing fidelity of numerical simulations have led to an abundance of data describing fluid flows. This review discusses a range of techniques for analyzing such data, with the aim of ext…
View article
Dielectric barrier discharges: progress on plasma sources and on the understanding of regimes and single filaments Open
Dielectric barrier discharges (DBDs) are plasmas generated in configurations with an insulating (dielectric) material between the electrodes which is responsible for a self-pulsing operation. DBDs are a typical example of nonthermal atmosp…
View article
On instabilities of deep learning in image reconstruction and the potential costs of AI Open
Deep learning, due to its unprecedented success in tasks such as image classification, has emerged as a new tool in image reconstruction with potential to change the field. In this paper, we demonstrate a crucial phenomenon: Deep learning …
View article
Super-resolution reconstruction of turbulent flows with machine learning Open
We use machine learning to perform super-resolution analysis of grossly under-resolved turbulent flow field data to reconstruct the high-resolution flow field. Two machine learning models are developed, namely, the convolutional neural net…
View article
Knocking combustion in spark-ignition engines Open
Knocking combustion research is crucially important because it determines engine durability, fuel consumption, and power density, as well as noise and emission performance. Current spark ignition (SI) engines suffer from both conventional …
View article
Gravitational circulation in straits and estuaries Open
A coupled set of partial differential equations and associated boundary conditions is written to describe circulation and salt-flux processes for estuaries in which turbulent mixing results primarily from tidal currents. Similarity solutio…