26 papers · ranked by Valyu relevance
Ankur Jain
Fluid flow past one or more solid bodies is a fundamental problem of much practical importance. Standard solutions of simplified problems involving incompressible inviscid irrotational flow past common geometries such as circular cylinders and airfoils are commonly available. This work presents exact analysis of a…
Diederik Beckers, Jeff D. Eldredge
Potential flow has many applications, including the modelling of unsteady flows in aerodynamics. For these models to work efficiently, it is best to avoid Biot-Savart interactions. This work presents a grid-based treatment of potential flows in two dimensions and its use in a vortex model for simulating unsteady…
Anil Lal S, Yadav, Mannu
This paper presents a unified and computationally efficient framework for predicting incompressible, irrotational (potential) flow around multiple immersed bodies in two-dimensional domains, with particular emphasis on quantifying irrotational interaction effects in multi-body configurations. The methodology integrates…
Volker Elling
Ccompressible (full) potential flow is expressed as an equivalent first-order system of conservation laws for density ̺ and velocity v. Energy E is shown to be the only nontrivial entropy for that system in multiple space dimensions, and it is strictly convex in ρ, v if and only if |v| < c. For motivation some simple…
A. V. Agafonov, E. A. Talygin, L. A. Bockeria, A. Yu. Gorodkov
This paper proposes a new approach to the quantitative analysis of the hydrodynamic structure of a blood flow in the flow channel running from the left atrium to the end of the aorta. This approach is based on the concept of the structural organization of tornado-like swirling jets in channels with a given geometric…
Valentin Couvreur, Adrien Heymans, Guillaume Lobet, Xavier Draye
With global warming, climate zones are projected to shift poleward, and the frequency and intensity of droughts to increase, driving threats to crop production and ecosystems. Plant hydraulic traits play major roles in coping with such droughts, and process-based plant hydraulics (water flowing along decreasing…
Authors not listed
Bipolar electrode (BPE) systems have been attracting increasing attention owing to their cost-effectiveness and wireless design. Recently, we reported the concept of streaming potential-driven BPEs for the oxidative electropolymerization of aromatic monomers without the need for an electric power supply. However, our…
P.B. Ngancha, B.P. Numbi, K. Kusakana
The production of hydroelectricity is well-established in many nations worldwide and has a reputation for being resilient, emitting little carbon dioxide, and having a long lifespan. This article begins by examining the hydropower sites capacity in the Southern African region and the potential for generation-site…
Steven Nerney, Edward Nerney
We analyze the Navier Stokes equation, and show that all non-viscous, irrotational flows are barotropic. As far as we know, this has never been stated in the literature before, and indirectly suggests that vorticity is required to make these flows non-barotropic. Both the pressure, temperature, speed, entropy…
Evgeniy Boyko, Shimon Rubin, Amir D. Gat, Moran Bercovici
We present an analytical study of electroosmotic flow in a Hele-Shaw configuration with nonuniform zeta potential distribution. Applying the lubrication approximation and assuming thin electric double layer, we obtain a pair of uncoupled Poisson equations for the pressure and depthaveraged stream function, and show…
Keith Saum, Begoña Campos, Diego Celdran Bonafonte, Liran Oren + 2 more
The arteriovenous fistula (AVF) is the preferred method of vascular access for hemodialysis; however, 30-50% of AVFs undergo primary failure and are unsuitable for clinical use. As disturbed hemodynamics initiate endothelial injury and intimal hyperplasia, we designed an endovascular flow-conditioning anastomotic…
Pilhwa Lee
Electrodiffusion is essential in understanding the mechanisms of electrophysiology. Active exchange pumps are critical regarding volume homeostasis, and are also significant in the mechanisms of cell division, growth, and apoptosis. In the formalism of the immersed boundary (IB) method, we replace classical interface…
M. E. Alston, R. Barber
Leaf vascular patterns are the mechanisms and mechanical support for the transportation of fluidics for photosynthesis and leaf development properties. Vascular hierarchical networks in leaves have far-reaching functions in optimal transport efficiency of functional fluidics. Embedding leaf morphogenesis as a resistor…
Lawrence N. Scotten, Rolland Siegel, David J. Blundon, Marcus-André Deutsch + 4 more
To demonstrate a clear link between predicted blood shear forces during valve closure and thrombogenicity that explains the thrombogenic difference between tissue and mechanical valves and provides a practical metric to develop and refine prosthetic valve designs for reduced thrombogenicity. Pulsatile and quasi-steady…
Changhu Wang, Weiyun Meng, Carlos Escobedo, Lung-Ming Fu
Microfluidic systems have become a hot topic in Micro-Electro-Mechanical System (MEMS) research, with micropumps serving as a key element due to their role in determining structural and flow dynamics within these systems. This study aims to analyze the influence of different structural obstacles within microfluidics on…
Navaneeth Krishna Rajeeva Pandian, Alanna Farell, Emily Davis, Jessica Li Chang Teo + 3 more
Microvascular networks take shape from the inherent flow, forces, and nutrient requirements of the tissue. These remarkably fluid flow-related forces are difficult to measure experimentally and are usually derived from flow values measured during experiments. Currently, there are no 3D vascular flow assessment tools…
Authors not listed
In this paper we continue our previous investigation about the use of stress function in the flow of generalized Newtonian fluids through conduits of circular and non-circular (or/and multiply connected) cross sections where we inspect the flow of power law fluids in tubes of elliptical cross sections. We derive…
Y. Cohen, Olivier Devauchelle, Hansjörg Seybold, Robert Yi + 2 more
'Piotr Szymczak' 'Daniel H. Rothman'] River networks exhibit a complex ramified structure that has inspired decades of studies. Yet, an understanding of the propagation of a single stream remains elusive. Here we invoke a criterion for path selection from fracture mechanics and apply it to the growth of streams in a…
marcus pollard, Rhushabh Maugi, Angelika Holzinger, Micheal Scanlon + 1 more
Resistive pulse sensors have been used to characterise everything from whole cells to small molecules. Their integration into microfluidic devices have simplified sample handling whilst increasing throughput. Typically, these devices measure a limited size range or a specific analyte, making them prone to blockages in…
Ena Ysabella D. Arroyo, Jaimie A. De Guzman, Maro M. Aziz, Helen Cardenas-Rios + 3 more
Hydra, a simple freshwater cnidarian, occurs in both moving and still bodies of water. Flow and corresponding forces are ubiquitous factors in Hydra’s environment. Even in still water, brief exposure to a burst of flow (e.g., due to wind) can influence the surface attachment and dispersal of polyps. Additionally…
Authors not listed
Porous electrodes are ubiquitous to electrochemical technologies for energy conversion and storage, where they play a set of critical roles in the performance and cost of the systems. While progress on electrode design has been mostly driven by experimentation which is time- and resource-intensive, predictive design…
Yidan Xue, Stephen J. Payne, Sarah L. Waters
The flow network model is an established approach to approximate pressure-flow relationships in a bifurcating network, and has been widely used in many contexts. Existing models typically assume unidirectional flow and exploit Poiseuille’s law, and thus neglect the impact of bifurcation geometry and finite-sized…
Authors not listed
This work investigates the fluid dynamics of electrolyte mixing within the tanks of vanadium flow batteries. Custom axisymmetric tanks are used to study the different flow regimes that emerge during battery cycling at various flow rates. A dual online diagnostic tool based on UV-vis spectroscopy enables precise…
Jacob C. Holter, Shashwat S. Agarwal, Joseph W. Tinapple, Joseph M. Barlage + 2 more
The transport function of lymphatic vessels is altered during tissue injury, inflammation, and cancer. Defects in lymphatic function are associated with changes to the biophysical microenvironment, including pressure and flow. However, the ability of fluid forces to orchestrate the remodeling of blind-ended lymphatic…
Amin Razeghiyadaki, Dongming Wei, Asma Perveen, Dichuan Zhang + 4 more
'Célio Bruno Pinto Fernandes' 'Salah Aldin Faroughi' 'Luís L. Ferrás' 'Alexandre M. Afonso'] In the polymer sheet processing industry, the primary objective when designing a coat-hanger die is to achieve a uniform velocity distribution at the exit of the extrusion die outlet. This velocity distribution depends on the…
Lu Jia, Yongzhong Zeng, Xiaobing Liu, Chao Peng + 3 more
'Lindong He'] To address the measurement accuracy challenges posed by the internal flow complexity in atypical circular bend pipes with short turning sections and without extended straight pipe segments, this study designed an experimental circular “S”-shaped bent pipe with a diameter of 0.4 m and a bending angle of…