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Journal articles on the topic '0D modeling'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

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1

Tretyakova, Rufina M., Gennady I. Lobov, and Gennady A. Bocharov. "Modelling lymph flow in the lymphatic system: from 0D to 1D spatial resolution." Mathematical Modelling of Natural Phenomena 13, no. 5 (2018): 45. http://dx.doi.org/10.1051/mmnp/2018044.

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In this study, we formulated a core mathematical model for describing the one-dimensional lymph flow in lymphatic vessels and branching network of lymphatic vessels. The 1D model was numerically implemented using the 1D haemodynamic modeling tools developed in T.M. Gamilov et al. and S. Simakov et al. [T.M. Gamilov et al., Transl. Med. 6 (2013) 5–13 and S. Simakov et al., Russian J. Numer. Anal. Math. Model. 28 (2013) 485–504]. The formulated model was calibrated using published data on lymph flow dynamics and other modelling studies of lymph flows. The comparison of 0D and 1D formulations of

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Karcz, Michał. "From 0D to 1D modeling of tubular solid oxide fuel cell." Energy Conversion and Management 50, no. 9 (2009): 2307–15. http://dx.doi.org/10.1016/j.enconman.2009.05.007.

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Ziegler, Bartosz, Jędrzej Mosędrżny, and Natalia Lewandowska. "Swirled injector modeling for cavitating multiphase flow." E3S Web of Conferences 128 (2019): 06007. http://dx.doi.org/10.1051/e3sconf/201912806007.

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The goal of this study is to present a comparison between different approaches to multiphase injection modeling of self-pressurized rocket engine propellant. Swirled, tangential orifice injector of nitrous oxide, for an “N” class hybrid rocket motor is the object of the study. A brief descriptionof the injector purpose and geometry is provided, followed by a description of different approaches for flow modeling. Examined techniques range from 0D, Homogeneous Equilibrium Model (HEM) to 3D multiphase with mass and heat exchange between phases. Results of analyses are provided and compared with e

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Siri, Saeed, Malikeh Nabaei, and Nasser Fatouraee. "Multiscale Modeling of Endothelium Derived Wall Shear Stress Regulation in Common Carotid Artery." Journal of Mechanics 35, no. 6 (2019): 901–14. http://dx.doi.org/10.1017/jmech.2019.1.

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ABSTRACTShear induced autoregulation is the natural ability of organs to maintain the local hemodynamic stresses in a stable condition in spite of altering perfusion rate. Endothelium cells are shear sensitive mechanoreceptors that are responsible for regulating the arterial wall architecture and mechanical properties in order to maintain homeostasis. This occurs by means of vasoactive mediators, which cause vasodilation or vasoconstriction. In this paper we presented a multiscale model of local flow regulation. First, a lumped parameter model of the whole cardiovascular system was implemented

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Pasternak, Michal, Fabian Mauss, Cathleen Perlman, and Harry Lehtiniemi. "Aspects of 0D and 3D Modeling of Soot Formation for Diesel Engines." Combustion Science and Technology 186, no. 10-11 (2014): 1517–35. http://dx.doi.org/10.1080/00102202.2014.935213.

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VOLKMAR, Chris, Ubbo RICKLEFS, and Peter J. KLAR. "Self-Consistent Numerical 0D/3D Hybrid Modeling of Radio-Frequency Ion Thrusters." TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 14, ists30 (2016): Pb_23—Pb_32. http://dx.doi.org/10.2322/tastj.14.pb_23.

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Cho, Seokwon, Jihwan Park, Chiheon Song, et al. "Prediction Modeling and Analysis of Knocking Combustion using an Improved 0D RGF Model and Supervised Deep Learning." Energies 12, no. 5 (2019): 844. http://dx.doi.org/10.3390/en12050844.

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The knock phenomenon is one of the major hindrances for enhancing the thermal efficiency in spark-ignited engines. Due to the stochastic behavior of knocking combustion, analytical cycle studies are required. However, there are many problems to be addressed with regard to the individual cycle analysis of in-cylinder pressure data. This study thus proposes novel, comprehensive and efficient methodologies for evaluating the knocking combustion in the internal combustion engine. The proposed methodologies include a filtering method for the in-cylinder pressure, the determination of the knock onse

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Torii, Ryo, Marie Oshima, Toshio Kobayashi, Kiyoshi Takagi, and Tayfun E. Tezduyar. "Role of 0D peripheral vasculature model in fluid–structure interaction modeling of aneurysms." Computational Mechanics 46, no. 1 (2009): 43–52. http://dx.doi.org/10.1007/s00466-009-0439-7.

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Ngayihi Abbe, Claude Valery, Raidandi Danwe, and Robert Nzengwa. "Comparative Numerical Study of Four Biodiesel Surrogates for Application on Diesel 0D Phenomenological Modeling." Journal of Combustion 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/3714913.

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To meet more stringent norms and standards concerning engine performances and emissions, engine manufacturers need to develop new technologies enhancing the nonpolluting properties of the fuels. In that sense, the testing and development of alternative fuels such as biodiesel are of great importance. Fuel testing is nowadays a matter of experimental and numerical work. Researches on diesel engine’s fuel involve the use of surrogates, for which the combustion mechanisms are well known and relatively similar to the investigated fuel. Biodiesel, due to its complex molecular configuration, is stil

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Choi, Heewon, Nam-gyu Lim, Seong Jun Lee, and Jungsoo Park. "Feasibility Study for Sustainable Use of Lithium-Ion Batteries Considering Different Positive Electrode Active Materials under Various Driving Cycles by Using Cell to Electric Vehicle (EV) Simulation." Sustainability 12, no. 22 (2020): 9764. http://dx.doi.org/10.3390/su12229764.

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Electric vehicles have been issued to achieve sustainable mobility. Main factors to sustainable electric vehicle (EV) are that lithium-ion battery (LIB) has to maintain lower cost, lighter weight, SOC (state of charge), thermal stability, and driving ranges. In this study, nickel-cobalt-manganese (NCM), lithium iron phosphate (LFP), and lithium manganese oxide (LMO), which are used as representative positive electrode materials, were applied to battery cells. Then, the battery characteristics at the system level, according to the application of different positive electrode materials, were comp

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Zhang, Yuanpeng, Marshall McDonnell, Wei Liu, and Matthew G. Tucker. "Reverse Monte Carlo modeling for low-dimensional systems." Journal of Applied Crystallography 52, no. 5 (2019): 1035–42. http://dx.doi.org/10.1107/s160057671901080x.

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Reverse Monte Carlo (RMC) is one of the commonly used approaches for modeling total scattering data. However, to extend the capability of the RMC method for refining the structure of nanomaterials, the dimensionality and finite size need to be considered when calculating the pair distribution function (PDF). To achieve this, the simulation box must be set up to remove the periodic boundary condition in one, two or three of the dimensions. This then requires a correction to be applied for the difference in number density between the real system and the simulation box. In certain circumstances a

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Demesoukas, Sokratis, Pierre Brequigny, Christian Caillol, Fabien Halter, and Christine Mounaïm-Rousselle. "0D modeling aspects of flame stretch in spark ignition engines and comparison with experimental results." Applied Energy 179 (October 2016): 401–12. http://dx.doi.org/10.1016/j.apenergy.2016.07.007.

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Pastor, José, Pablo Olmeda, Jaime Martín, and Felipe Lewiski. "Methodology for Optical Engine Characterization by Means of the Combination of Experimental and Modeling Techniques." Applied Sciences 8, no. 12 (2018): 2571. http://dx.doi.org/10.3390/app8122571.

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Optical engines allow for the direct visualization of the phenomena taking place in the combustion chamber and the application of optical techniques for combustion analysis, which makes them invaluable tools for the study of advanced combustion modes aimed at reducing pollutant emissions and increasing efficiency. An accurate thermodynamic analysis of the engine performance based on the in-cylinder pressure provides key information regarding the gas properties, the heat release, and the mixing conditions. If, in addition, optical access to the combustion process is provided, a deeper understan

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Champagne, Aurélie, Samuel Dechamps, Simon M. M. Dubois, Aurélien Lherbier, Viet-Hung Nguyen, and Jean-Christophe Charlier. "Computational Atomistic Modeling in Carbon Flatland and Other 2D Nanomaterials." Applied Sciences 10, no. 5 (2020): 1724. http://dx.doi.org/10.3390/app10051724.

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As in many countries, the rise of nanosciences in Belgium has been triggered in the eighties in the one hand, by the development of scanning tunneling and atomic force microscopes offering an unprecedented possibility to visualize and manipulate the atoms, and in the other hand, by the synthesis of nano-objects in particular carbon nanostructures such as fullerene and nanotubes. Concomitantly, the increasing calculating power and the emergence of computing facilities together with the development of DFT-based ab initio softwares have brought to nanosciences field powerful simulation tools to a

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Pachidis, Vassilios, Pericles Pilidis, Fabien Talhouarn, Anestis Kalfas, and Ioannis Templalexis. "A Fully Integrated Approach to Component Zooming Using Computational Fluid Dynamics." Journal of Engineering for Gas Turbines and Power 128, no. 3 (2004): 579–84. http://dx.doi.org/10.1115/1.2135815.

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Background . This study focuses on a simulation strategy that will allow the performance characteristics of an isolated gas turbine engine component, resolved from a detailed, high-fidelity analysis, to be transferred to an engine system analysis carried out at a lower level of resolution. This work will enable component-level, complex physical processes to be captured and analyzed in the context of the whole engine performance, at an affordable computing resource and time. Approach. The technique described in this paper utilizes an object-oriented, zero-dimensional (0D) gas turbine modeling a

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Bianchi, Fiammetta Rita, Arianna Baldinelli, Linda Barelli, Giovanni Cinti, Emilio Audasso, and Barbara Bosio. "Multiscale Modeling for Reversible Solid Oxide Cell Operation." Energies 13, no. 19 (2020): 5058. http://dx.doi.org/10.3390/en13195058.

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Solid Oxide Cells (SOCs) can work efficiently in reversible operation, allowing the energy storage as hydrogen in power to gas application and providing requested electricity in gas to power application. They can easily switch from fuel cell to electrolyzer mode in order to guarantee the production of electricity, heat or directly hydrogen as fuel depending on energy demand and utilization. The proposed modeling is able to calculate effectively SOC performance in both operating modes, basing on the same electrochemical equations and system parameters, just setting the current density direction

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Pasternak, Michal, Fabian Mauss, Andrea Matrisciano, and Lars Seidel. "MS2-1 Simulation of Diesel surrogate fuels performance under engine conditions using 0D engine - fuel test bench(MS: Modeling and Simulation,General Session Papers)." Proceedings of the International symposium on diagnostics and modeling of combustion in internal combustion engines 2012.8 (2012): 536–41. http://dx.doi.org/10.1299/jmsesdm.2012.8.536.

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Kim, Yirop, Myoungsoo Kim, Sechul Oh, Woojae Shin, Seokwon Cho, and Han Ho Song. "A New Physics-Based Modeling Approach for a 0D Turbulence Model to Reflect the Intake Port and Chamber Geometries and the Corresponding Flow Structures in High-Tumble Spark-Ignition Engines." Energies 12, no. 10 (2019): 1898. http://dx.doi.org/10.3390/en12101898.

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Turbulence is one of the most important aspects in spark-ignition engines as it can significantly affect burn rates, heat transfer rates, and combustion stability, and thus the performance. Turbulence originates from a large-scale mean motion that occurs during the induction process, which mainly consists of tumble motion in modern spark-ignition engines with a pentroof cylinder head. Despite its significance, most 0D turbulence models rely on calibration factors when calculating the evolution of tumble motion and its conversion into turbulence. In this study, the 0D tumble model has been impr

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Aletti, Matteo, Jean-Frédéric Gerbeau, and Damiano Lombardi. "Modeling autoregulation in three-dimensional simulations of retinal hemodynamics." Modeling and Artificial Intelligence in Ophthalmology 1, no. 1 (2016): 88–115. http://dx.doi.org/10.35119/maio.v1i1.17.

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Purpose: Autoregulation is a mechanism necessary to maintain an approximately constant blood flow rate in the microcirculation when acute changes in systemic pressure occur. Failure of autoregulation in the retina has been associated with various diseases, including glaucoma. In this work, we propose an initial attempt to model autoregulation in a 3D network of retinal arteries.Methods: The blood flow is modeled with the time-dependent Stokes equations. The arterial wall model includes the endothelium and the smooth muscle fibers. Various simplifying assumptions lead to a fluid-structure model

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Prather, Ray O., Alain Kassab, Marcus William Ni, Eduardo Divo, Ricardo Argueta-Morales, and William M. DeCampli. "Multi-scale pulsatile CFD modeling of thrombus transport in a patient-specific LVAD implantation." International Journal of Numerical Methods for Heat & Fluid Flow 27, no. 5 (2017): 1022–39. http://dx.doi.org/10.1108/hff-10-2016-0378.

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Purpose Predictive models implemented in medical procedures can potentially bring great benefit to patients and represent a step forward in targeted treatments based on a patient’s physiological condition. It is the purpose of this paper to outline such a model. Design/methodology/approach A multi-scale 0D-3D model based on patient specific geometry combines a 0-dimensional lumped parameter model (LPM) with a 3D computational fluid dynamics (CFD) analysis coupled in time, to obtain physiologically viable flow parameters. Findings A comparison of physiological data gathered from literature with

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21

García-Jacas, César R., Yovani Marrero-Ponce, Fernando Cortés-Guzmán, et al. "Enhancing Acute Oral Toxicity Predictions by using Consensus Modeling and Algebraic Form-Based 0D-to-2D Molecular Encodes." Chemical Research in Toxicology 32, no. 6 (2019): 1178–92. http://dx.doi.org/10.1021/acs.chemrestox.9b00011.

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22

Fath, Johannes Philipp, Lennart Alsheimer, Mathias Storch, et al. "The influence of the anode overhang effect on the capacity of lithium-ion cells – a 0D-modeling approach." Journal of Energy Storage 29 (June 2020): 101344. http://dx.doi.org/10.1016/j.est.2020.101344.

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23

Chevalier, Luc, Heba Makhlouf, Benoît Jacquet-Faucillon, and Eric Launay. "Modeling the influence of connecting elements in wood products behavior: a numerical multi-scale approach." Mechanics & Industry 19, no. 3 (2018): 301. http://dx.doi.org/10.1051/meca/2018004.

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Wood furniture is often composed of simple parts that may be modeled as beams or plates. These particularities allow using simplified approaches that reduces the number of degrees of freedom (dof for short) in a finite element simulation of the furniture's behavior. Generally, connections are not taken into account in such simulations but these connections are critical in the failure process of the furniture and it worth studying it precisely. Using a multi-scale approach, this paper introduces a numerical procedure to identify the connection contribution in the furniture's stiffness. Comparin

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Montenegro, G., A. Della Torre, A. Onorati, and R. Fairbrother. "A Nonlinear Quasi-3D Approach for the Modeling of Mufflers with Perforated Elements and Sound-Absorbing Material." Advances in Acoustics and Vibration 2013 (January 14, 2013): 1–10. http://dx.doi.org/10.1155/2013/546120.

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Increasing demands on the capabilities of engine thermo-fluid dynamic simulation and the ability to accurately predict both performance and acoustics have led to the development of several approaches, ranging from fully 3D to simplified 1D models. The quasi-3D approach is proposed as a compromise between the time-demanding 3D CFD analysis and the fast 1D approach; it allows to model the acoustics of intake and exhaust system components, used in internal combustion engines, resorting to a 3D network of 0D cells. Due to its 3D nature, the model predicts high-order modes, improving the accuracy a

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Milewski, Jarosław, Wojciech Bujalski, and Janusz Lewandowski. "Thermodynamic analysis of biofuels as fuels for high temperature fuel cells." Archives of Thermodynamics 33, no. 4 (2011): 41–65. http://dx.doi.org/10.2478/v10173-012-0027-7.

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Abstract Based on mathematical modeling and numerical simulations, applicativity of various biofuels on high temperature fuel cell performance are presented. Governing equations of high temperature fuel cell modeling are given. Adequate simulators of both solid oxide fuel cell (SOFC) and molten carbonate fuel cell (MCFC) have been done and described. Performance of these fuel cells with different biofuels is shown. Some characteristics are given and described. Advantages and disadvantages of various biofuels from the system performance point of view are pointed out. An analysis of various biof

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Piochi, Monica, Barbara Cantucci, Giordano Montegrossi, and Gilda Currenti. "Hydrothermal Alteration at the San Vito Area of the Campi Flegrei Geothermal System in Italy: Mineral Review and Geochemical Modeling." Minerals 11, no. 8 (2021): 810. http://dx.doi.org/10.3390/min11080810.

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The Campi Flegrei geothermal system sets in one of the most famous and hazardous volcanic caldera in the world. The geothermal dynamics is suspected to have a crucial role in the monitored unrest phases and in the eruption triggering as well. Numerical models in the literature do not properly consider the geochemical effects of fluid-rock interaction into the hydrothermal circulation and this gap limits the wholly understanding of the dynamics. This paper focuses on fluid-rock interaction effects at the Campi Flegrei and presents relevant information requested for reactive transport simulation

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Marinoni, Andrea, Matteo Tamborski, Tarcisio Cerri, et al. "0D/1D Thermo-Fluid Dynamic Modeling Tools for the Simulation of Driving Cycles and the Optimization of IC Engine Performances and Emissions." Applied Sciences 11, no. 17 (2021): 8125. http://dx.doi.org/10.3390/app11178125.

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The prediction of internal combustion engine performance and emissions in real driving conditions is getting more and more important due to the upcoming stricter regulations. This work aims at introducing and validating a new transient simulation methodology of an ICE coupled to a hybrid architecture vehicle, getting closer to real-time calculations. A one-dimensional computational fluid dynamic software has been used and suitably coupled to a vehicle dynamics model in a user function framework integrated within a Simulink® environment. A six-cylinder diesel engine has been modeled by means of

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XIE, XINZHOU, MINWEN ZHENG, XU DUAN, SONGYUN XIE, and YUANYUAN WANG. "DIRECT CORONARY COUPLING APPROACH FOR COMPUTING FFRCT." Journal of Mechanics in Medicine and Biology 17, no. 03 (2016): 1750043. http://dx.doi.org/10.1142/s0219519417500439.

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With the advances in computational fluid dynamics (CFD) and image-based modeling techniques, fractional flow reserve (FFR) can be computed from coronary computed tomography angiography (CTA) scans (FFRCT). However, this non-invasive approach requires large-scale computational resources, which limits its application in routine clinical setting. A 3D–0D coupling approach is proposed to improve the coupling efficiency of FFRCT. Aortic–root is modeled by a lumped parameter model and connected with the models of left ventricle and systemic circulation. With this approach, the interested coronary re

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Tascioni, Roberto, Luca Cioccolanti, Luca Del Zotto, and Emanuele Habib. "Numerical Investigation of Pipelines Modeling in Small-Scale Concentrated Solar Combined Heat and Power Plants." Energies 13, no. 2 (2020): 429. http://dx.doi.org/10.3390/en13020429.

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In this paper four different detailed models of pipelines are proposed and compared to assess the thermal losses in small-scale concentrated solar combined heat and power plants. Indeed, previous numerical analyses carried out by some of the authors have revealed the high impact of pipelines on the performance of these plants because of their thermal inertia. Hence, in this work the proposed models are firstly compared to each other for varying temperature increase and mass flow rate. Such comparison shows that the one-dimensional (1D) longitudinal model is in good agreement with the results o

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Li, Peng, Chi-Yao Chang, and Amsini Sadiki. "Numerical Investigation of Pyrotechnical Initiators and Their Impact in Airbag Inflator Applications: Ballistic Modeling and Functional Analysis." Journal of Energy and Power Technology 03, no. 02 (2021): 1. http://dx.doi.org/10.21926/jept.2102026.

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A numerical model describing the ballistic behavior of a commercially used initiator is presented in this article. This model was built on the principle of conservation of mass and energy in the multi-phase framework incorporated with multi-loaded conditions. After obtaining the information about the grain size distribution in each composite, a fixing factor was proposed based on the surface area ratio of the composites. Thus, the solid propellant burning process based on distributed grain size was described, and the burn rate parameters of the applied pyrotechnic compositions were re-evaluate

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Dobre, Cătălina, Lavinia Grosu, Monica Costea, and Mihaela Constantin. "Beta Type Stirling Engine. Schmidt and Finite Physical Dimensions Thermodynamics Methods Faced to Experiments." Entropy 22, no. 11 (2020): 1278. http://dx.doi.org/10.3390/e22111278.

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The paper presents experimental tests and theoretical studies of a Stirling engine cycle applied to a β-type machine. The finite physical dimension thermodynamics (FPDT) method and 0D modeling by the imperfectly regenerated Schmidt model are used to develop analytical models for the Stirling engine cycle. The purpose of this study is to show that two simple models that take into account only the irreversibility due to temperature difference in the heat exchangers and imperfect regeneration are able to indicate engine behavior. The share of energy loss for each is determined using these two mod

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Kamta Legue, Daniel Romeo, Zacharie Merlin Ayissi, Mahamat Hassane Babikir, Marcel Obounou, and Henri Paul Ekobena Fouda. "Experimental and Simulation of Diesel Engine Fueled with Biodiesel with Variations in Heat Loss Model." Energies 14, no. 6 (2021): 1622. http://dx.doi.org/10.3390/en14061622.

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This study presents an experimental investigation and thermodynamic 0D modeling of the combustion of a compression-ignition engine, fueled by an alternative fuel based on neem biodiesel (B100) as well as conventional diesel (D100). The study highlights the effects of the engine load at 50%, 75% and 100% and the influence of the heat loss models proposed by Woschni, Eichelberg and Hohenberg on the variation in the cylinder pressure. The study shows that the heat loss through the cylinder wall is more pronounced during diffusion combustion regardless of the nature of the fuels tested and the loa

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Stasiak, Jolanta, Marcin Koba, Marcin Gackowski, and Tomasz Baczek. "Chemometric Analysis for the Classification of some Groups of Drugs with Divergent Pharmacological Activity on the Basis of some Chromatographic and Molecular Modeling Parameters." Combinatorial Chemistry & High Throughput Screening 21, no. 2 (2018): 125–37. http://dx.doi.org/10.2174/1386207321666180129102149.

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Aim and Objective: In this study, chemometric methods as correlation analysis, cluster analysis (CA), principal component analysis (PCA), and factor analysis (FA) have been used to reduce the number of chromatographic parameters (logk/logkw) and various (e.g., 0D, 1D, 2D, 3D) structural descriptors for three different groups of drugs, such as 12 analgesic drugs, 11 cardiovascular drugs and 36 “other” compounds and especially to choose the most important data of them. Material and Methods: All chemometric analyses have been carried out, graphically presented and also discussed for each group of

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Moniruzzaman, Chowdhury G., and Fangqun Yu. "Modeling Soot Size Distribution Evolution and Pollutant Formation Inside Diesel Engine Using a 0D Multi-zone Gas Parcel Model with Detailed Chemistry and Soot Microphysics." SAE International Journal of Engines 7, no. 3 (2014): 1336–69. http://dx.doi.org/10.4271/2014-01-1603.

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Liu, Xiaoheng, Ke Wan, Donghai Jin, and Xingmin Gui. "Development of a Throughflow-Based Simulation Tool for Preliminary Compressor Design Considering Blade Geometry in Gas Turbine Engine." Applied Sciences 11, no. 1 (2021): 422. http://dx.doi.org/10.3390/app11010422.

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Gas turbine engines are highly intricate machines, and every component of them is closely associated with one another. In the traditional engine developing process, vast experiment tests are needed. To reduce unnecessary trials, a whole gas turbine engine simulation is extremely needed. For this purpose, a compressor simulation tool is now developed. Considering the inherent drawbacks of 0D analysis and 3D CFD (Computational Fluid Dynamics) calculation, the 2D throughflow method is an indispensable tool. Based on the circumferential average method (CAM), 3D Navier–Stokes is transformed into a

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Hou, Longfeng. "Application of the Multi-Spectral Correlated-k Distribution Model to Multi-Dimensional Rectangular Enclosure Gas Radiation Calculations." Journal of Nanoelectronics and Optoelectronics 16, no. 3 (2021): 479–93. http://dx.doi.org/10.1166/jno.2021.2946.

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The Multi-Spectral Correlated-k distribution model (MSCk) is an amelioration of the widely used Ck model. In the MSCk model, the breakdown of correlation assumption used in the original Ck model for non-uniform media is overcome by introducing the clustering of scaling functions. The principle of MSCk model is to group together wavenumbers with respect to the spectral scaling functions—defined as the ratio between spectral absorption coefficients in distinct states—so that the correlation assumption can be considered as exact over the corresponding intervals of wavenumbers. Until now, validati

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Kannan, Ravishekar (Ravi), Narender Singh, Andrzej Przekwas, Xianlian Alex Zhou, Ross Walenga, and Andrew Babiskin. "A quasi-3D model of the whole lung: airway extension to the tracheobronchial limit using the constrained constructive optimization and alveolar modeling, using a sac–trumpet model." Journal of Computational Design and Engineering 8, no. 2 (2021): 691–704. http://dx.doi.org/10.1093/jcde/qwab008.

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Abstract Existing computational models used for simulating the flow and species transport in the human airways are zero-dimensional (0D) compartmental, three-dimensional (3D) computational fluid dynamics (CFD), or the recently developed quasi-3D (Q3D) models. Unlike compartmental models, the full CFD and Q3D models are physiologically and anatomically consistent in the mouth and the upper airways, since the starting point of these models is the mouth–lung surface geometry, typically created from computed tomography (CT) scans. However, the current resolution of CT scans limits the airway detec

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Ross, Molly, and Hitesh Bindra. "Statistical Mechanics-Based Surrogates for Scalar Transport in Channel Flow." Fluids 6, no. 2 (2021): 79. http://dx.doi.org/10.3390/fluids6020079.

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Thermal hydraulics, in certain components of nuclear reactor systems, involve complex flow scenarios, such as flows assisted by free jets and stratified flows leading to turbulent mixing and thermal fluctuations. These complex flow patterns and thermal fluctuations can be extremely critical from a reactor safety standpoint. The component-level lumped approximations (0D) or one-dimensional approximations (1D) models for such components and subsystems in safety analysis codes cannot capture the physics accurately, and may introduce a large degree of modeling uncertainty. On the other hand, high-

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Alastruey, Jordi, Nan Xiao, Henry Fok, Tobias Schaeffter, and C. Alberto Figueroa. "On the impact of modelling assumptions in multi-scale, subject-specific models of aortic haemodynamics." Journal of The Royal Society Interface 13, no. 119 (2016): 20160073. http://dx.doi.org/10.1098/rsif.2016.0073.

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Simulation of haemodynamics has become increasingly popular within the research community. Irrespective of the modelling approach (zero-dimensional (0D), one-dimensional (1D) or three-dimensional (3D)), in vivo measurements are required to personalize the arterial geometry, material properties and boundary conditions of the computational model. Limitations in in vivo data acquisition often result in insufficient information to determine all model parameters and, hence, arbitrary modelling assumptions. Our goal was to minimize and understand the impact of modelling assumptions on the simulated

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Castelletto, Stefania, Faraz A. Inam, Shin-ichiro Sato, and Alberto Boretti. "Hexagonal boron nitride: a review of the emerging material platform for single-photon sources and the spin–photon interface." Beilstein Journal of Nanotechnology 11 (May 8, 2020): 740–69. http://dx.doi.org/10.3762/bjnano.11.61.

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Single-photon sources and their optical spin readout are at the core of applications in quantum communication, quantum computation, and quantum sensing. Their integration in photonic structures such as photonic crystals, microdisks, microring resonators, and nanopillars is essential for their deployment in quantum technologies. While there are currently only two material platforms (diamond and silicon carbide) with proven single-photon emission from the visible to infrared, a quantum spin–photon interface, and ancilla qubits, it is expected that other material platforms could emerge with simil

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Kupecki, Jakub. "Modelling of Physical, Chemical, and Material Properties of Solid Oxide Fuel Cells." Journal of Chemistry 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/414950.

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This paper provides a review of modelling techniques applicable for system-level studies to account for physical, chemical, and material properties of solid oxide fuel cells. Functionality of 0D to 3D models is discussed and selected examples are given. Author provides information on typical length scales in evaluation of power systems with solid oxide fuel cells. In each section, proper examples of previous studies done in the field of 0D–3D modelling are recalled and discussed.

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Simakov, Sergey S. "Spatially averaged haemodynamic models for different parts of cardiovascular system." Russian Journal of Numerical Analysis and Mathematical Modelling 35, no. 5 (2020): 285–94. http://dx.doi.org/10.1515/rnam-2020-0024.

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AbstractThis paper revisits the usage of spatially averaged haemodynamic models such as non-stationary 1D/0D in space and stationary 0D in space models. Conditions of equivalence between different 1D model formulations are considered. The impact of circular and elliptic shapes of the tube cross-section on the friction term and the tube law is analyzed. Finally, the relationship between 0D lumped and 1D models is revealed.

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Schröter, Sandra, Apiwat Wijaikhum, Andrew R. Gibson, et al. "Chemical kinetics in an atmospheric pressure helium plasma containing humidity." Physical Chemistry Chemical Physics 20, no. 37 (2018): 24263–86. http://dx.doi.org/10.1039/c8cp02473a.

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Gorbanev, Y., C. C. W. Verlackt, S. Tinck, et al. "Combining experimental and modelling approaches to study the sources of reactive species induced in water by the COST RF plasma jet." Physical Chemistry Chemical Physics 20, no. 4 (2018): 2797–808. http://dx.doi.org/10.1039/c7cp07616a.

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Moreno, Sergio H., Andrzej I. Stankiewicz, and Georgios D. Stefanidis. "A two-step modelling approach for plasma reactors – experimental validation for CO2 dissociation in surface wave microwave plasma." Reaction Chemistry & Engineering 4, no. 7 (2019): 1253–69. http://dx.doi.org/10.1039/c9re00022d.

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Harry Solo, A., P. Freton, J. J. Gonzalez, and M. Benmouffok. "0D KINETIC MODEL: APPLIED TO SF6." PLASMA PHYSICS AND TECHNOLOGY 7, no. 3 (2021): 52–58. http://dx.doi.org/10.14311/ppt.2020.3.52.

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This work is related to the chemical kinetics modelling of plasma during extinction. A zero-dimensional model (0D) has been developed. Two hypotheses were used: (A) a constant pressure or (B) a constant mass density. Three initial data categories are generally required for the model: (1) the chemical reactions that govern the kinetic scheme, (2) the chemical composition at the local thermodynamic equilibrium (LTE) and (3) a law of temperature decay as a function of time representing the cooling rate. The developed model is presented and applied to SF6, gas commonly used in high voltage circuit

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Manini, Simone, Luca Antiga, Lorenzo Botti, and Andrea Remuzzi. "pyNS: An Open-Source Framework for 0D Haemodynamic Modelling." Annals of Biomedical Engineering 43, no. 6 (2014): 1461–73. http://dx.doi.org/10.1007/s10439-014-1234-y.

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El Khatib, N., O. Kafi, A. Sequeira, S. Simakov, Yu Vassilevski, and V. Volpert. "Mathematical modelling of atherosclerosis." Mathematical Modelling of Natural Phenomena 14, no. 6 (2019): 603. http://dx.doi.org/10.1051/mmnp/2019050.

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The review presents the state of the art in the atherosclerosis modelling. It begins with the biological introduction describing the mechanisms of chronic inflammation of artery walls characterizing the development of atherosclerosis. In particular, we present in more detail models describing this chronic inflammation as a reaction-diffusion wave with regimes of propagation depending on the level of cholesterol (LDL) and models of rolling monocytes initializing the inflammation. Further development of this disease results in the formation of atherosclerotic plaque, vessel remodelling and possi

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Giannella, Venanzio, Raffaele Sepe, Roberto Citarella, and Enrico Armentani. "FEM Modelling Approaches of Bolt Connections for the Dynamic Analyses of an Automotive Engine." Applied Sciences 11, no. 10 (2021): 4343. http://dx.doi.org/10.3390/app11104343.

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Three different finite element method (FEM) modelling approaches of bolt connections of a four-stroke, four-cylinder petrol engine are presented, and the related results compared in terms of preprocessing time and accuracy. A full 3D modelling of the bolt connections was preliminarily validated through a comparison with experimental test data available for the whole engine. Two further modelling approaches, a 1D approach and a contact-based (0D) approach, were benchmarked considering their influence on the accuracy for the dynamic analysis of an engine. Each of the three approaches presented p

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Mauviot, G., F. Le Berr, S. Raux, F. Perretti, L. M. Malbec, and C. N. Millet. "0D Modelling: a Promising Means for After-treatment Issues in Modern Automotive Applications." Oil & Gas Science and Technology - Revue de l'IFP 64, no. 3 (2009): 285–307. http://dx.doi.org/10.2516/ogst/2009023.

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