Bibliografías temáticas / Boundary conditions calibration / Artículos de revistas
Siga este enlace para ver otros tipos de publicaciones sobre el tema: Boundary conditions calibration.

Artículos de revistas sobre el tema "Boundary conditions calibration"

Autor: Grafiati
Publicado: 14 de diciembre de 2024
Última modificación: 31 de julio de 2025

Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros

Elija tipo de fuente:

Consulte los 50 mejores artículos de revistas para su investigación sobre el tema "Boundary conditions calibration".

Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.

También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.

Explore artículos de revistas sobre una amplia variedad de disciplinas y organice su bibliografía correctamente.

1

Herold, Judith, Eric Lemont, Stuart Bettington, and Edward Couriel. "CHALLENGES OF BOUNDARY CONDITIONS IN OPEN OCEAN MODELS." Coastal Engineering Proceedings, no. 36v (December 28, 2020): 52. http://dx.doi.org/10.9753/icce.v36v.waves.52.

Texto completo
Resumen
The development and calibration of coastal numerical models to support engineering design and environmental impact studies is a challenging process and one that requires professional judgement and continual assessment of all aspects of the model makeup. Fundamental to the integrity of the model are appropriate boundary conditions and quality observational data for calibration. Open ocean boundary conditions are typically the most complex and important aspect of a model build. They represent the influence of dynamics occurring beyond the model extent, bridging large-scale dynamics to the small-
Los estilos APA, Harvard, Vancouver, ISO, etc.
2

Hwang, B.-W., C.-M. Suh, and S.-H. Kim. "Finite element analysis of calibration factors for the modified incremental strain method." Journal of Strain Analysis for Engineering Design 38, no. 1 (2003): 45–51. http://dx.doi.org/10.1243/030932403762671881.

Texto completo
Resumen
To modify the incremental strain method used to evaluate non-uniform residual stress, a finite element analysis (FEA) of the reference model used to describe a hole-drilling test was conducted. The calibration factors for the x and y directions were obtained from the analysis and then their differences were compared under various loading conditions. A hole-drilling test using a steel plate as the reference specimen was introduced, and under the pure bending load, strain relaxation was measured at each hole-drilling step to determine the calibration factors. Although the calibration factors in
Los estilos APA, Harvard, Vancouver, ISO, etc.
3

Campbell, D. S., M. Gundappa, and T. E. Diller. "Design and Calibration of a Local Heat-Flux Measurement System for Unsteady Flows." Journal of Heat Transfer 111, no. 2 (1989): 552–57. http://dx.doi.org/10.1115/1.3250713.

Texto completo
Resumen
A local heat–flux measurement system was built, calibrated, and tested for use in unsteady flows. The system was designed to maintain constant-wall-temperature boundary conditions. The measuring element is a thin-film heat flux gage made by sputter-coating gold onto a substrate. A constant-temperature anemometer is used to maintain the thin-film gage at a specified temperature under fluctuating conditions. A separate temperature control system maintains the surrounding boundary at the gage temperature. The system was calibrated for both steady and unsteady flows using a specially designed cali
Los estilos APA, Harvard, Vancouver, ISO, etc.
4

Monfre, Stephen L., and Steven D. Brown. "Quantitative Fourier-Domain Analysis. Part II: Determination of Boundary Conditions." Applied Spectroscopy 46, no. 11 (1992): 1711–18. http://dx.doi.org/10.1366/0003702924926943.

Texto completo
Resumen
A new approach for determining the boundary conditions of a Fourier-domain data set prior to performing quantitative multicomponent analysis has been developed. Processing boundary conditions were determined by calculating the condition number of the calibration matrix which contains the models used to describe the chemical system being studied. Once the boundary conditions for the Fourier-domain data set were determined, the Kalman filter was used to estimate the concentration of individual components in a multicomponent sample. Synthetic data were first analyzed to determine both the feasibi
Los estilos APA, Harvard, Vancouver, ISO, etc.
5

Ahmadi, M. M., P. M. Byrne, and R. G. Campanella. "Cone tip resistance in sand: modeling, verification, and applications." Canadian Geotechnical Journal 42, no. 4 (2005): 977–93. http://dx.doi.org/10.1139/t05-030.

Texto completo
Resumen
A numerical modeling procedure is presented to evaluate cone tip resistance in sand. The procedure involves a moving boundary simulating cone penetration. The soil is modeled as a Mohr–Coulomb elastic–plastic material with stress-dependent parameters. The procedure is verified by comparing predicted numerical values of cone tip resistance with published experimental measurements from calibration chamber tests. The selected database consists of 59 calibration chamber tests on Ticino sand with different relative densities, overconsolidation ratios, stresses, and boundary conditions. Several appl
Los estilos APA, Harvard, Vancouver, ISO, etc.
6

Sivelle, Vianney, Philippe Renard, and David Labat. "Coupling SKS and SWMM to Solve the Inverse Problem Based on Artificial Tracer Tests in Karstic Aquifers." Water 12, no. 4 (2020): 1139. http://dx.doi.org/10.3390/w12041139.

Texto completo
Resumen
Artificial tracer tests constitute one of the most powerful tools to investigate solute transport in conduit-dominated karstic aquifers. One can retrieve information about the internal structure of the aquifer directly by a careful analysis of the residence time distribution (RTD). Moreover, recent studies have shown the strong dependence of solute transport in karstic aquifers on boundary conditions. Information from artificial tracer tests leads us to propose a hypothesis about the internal structure of the aquifers and the effect of the boundary conditions (mainly high or low water level).
Los estilos APA, Harvard, Vancouver, ISO, etc.
7

Han, Liya, Long Yu, and Xusheng Zhu. "A Novel Method for Pose and Position Calibration of Laser Displacement Sensors." Sensors 23, no. 4 (2023): 1762. http://dx.doi.org/10.3390/s23041762.

Texto completo
Resumen
Laser displacement sensors are widely used in the aviation industry for the purpose of surface normal measurements. The measurement of a surface normal depends on prior knowledge of the poses and positions of the sensors, which are obtained through calibration. This paper introduces a new parameter to the traditional calibration procedure, to reduce the calibration error, and explores the factors affecting calibration using the Monte Carlo method. In the experiment, the normal measurement error of the probe consisted of four sensors after calibration was less than 0.1∘, which satisfied the est
Los estilos APA, Harvard, Vancouver, ISO, etc.
8

Kacem, Ahmed, Hervé Laurent, and Sandrine Thuillier. "Influence of experimental boundary conditions on the calibration of a ductile fracture criterion." Engineering Fracture Mechanics 248 (May 2021): 107686. http://dx.doi.org/10.1016/j.engfracmech.2021.107686.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
9

Baldi, Antonio. "Far-Field Boundary Conditions for Calculation of Hole-Drilling Residual Stress Calibration Coefficients." Experimental Mechanics 57, no. 4 (2016): 659–64. http://dx.doi.org/10.1007/s11340-016-0235-1.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
10

FURSENKO, Antanas. "Precizinių rastrų formavimo sistemos juostos poslinkio matavimo junginio skaičiuojamieji tyrimai / Analytical research of displacement measuring unit of the precise raster-forming systems." Mokslas - Lietuvos ateitis 9, no. 6 (2017): 597–601. http://dx.doi.org/10.3846/mla.2017.1092.

Texto completo
Resumen
The precision raster-forming systems creation and development must be based on research in the specific work environment. In not ideal metrological conditions the precision raster-forming system allows to achieve high accuracy of the calibration, when used dynamic calibration method.The paper analyzes the possibility of analytical modeling of one main part (steel tape displacement measuring unit) of precise raster forming systems. In the work, a linear mechanical model of steel tape was applied to the load. The work described the equation, which describes the steel tape deformation model under
Los estilos APA, Harvard, Vancouver, ISO, etc.
11

Annunziato, Mario, and Hanno Gottschalk. "CALIBRATION OF LÉVY PROCESSES USING OPTIMAL CONTROL OF KOLMOGOROV EQUATIONS WITH PERIODIC BOUNDARY CONDITIONS." Mathematical Modelling and Analysis 23, no. 3 (2018): 390–413. http://dx.doi.org/10.3846/mma.2018.024.

Texto completo
Resumen
We present an optimal control approach to the problem of model calibration for Lévy processes based on an non-parametric estimation procedure of the measure. The optimization problem is related to the maximum likelihood theory of sieves [25] and is formulated with the Fokker-Planck-Kolmogorov approach [3, 4]. We use a generic spline discretization of the Lévy jump measure and select an adequate size of the spline basis using the Akaike Information Criterion (AIC) [12]. The first order necessary optimality conditions are derived based on the Lagrange multiplier technique in a functional space.
Los estilos APA, Harvard, Vancouver, ISO, etc.
12

Chang, Ze, Hongzhi Zhang, Erik Schlangen, and Branko Šavija. "Lattice Fracture Model for Concrete Fracture Revisited: Calibration and Validation." Applied Sciences 10, no. 14 (2020): 4822. http://dx.doi.org/10.3390/app10144822.

Texto completo
Resumen
The lattice fracture model is a discrete model that can simulate the fracture process of cementitious materials. In this work, the Delft lattice fracture model is reviewed and utilized for fracture analysis. First, a systematic calibration procedure that relies on the combination of two uniaxial tensile tests is proposed to determine the input parameters of lattice elements—tensile strength, compressive strength and elastic modulus. The procedure is then validated by simulating concrete fracture under complex loading and boundary conditions: Uniaxial compression, three-point bending, tensile s
Los estilos APA, Harvard, Vancouver, ISO, etc.
13

Karban, Pavel, David Pánek, František Mach, and Ivo Doležel. "Calibration of numerical models based on advanced optimization and penalization techniques." Journal of Electrical Engineering 68, no. 5 (2017): 396–400. http://dx.doi.org/10.1515/jee-2017-0073.

Texto completo
Resumen
Abstract A new approach to estimation of unknown material parameters and boundary conditions of physical models was developed. The approach is based on processing measured data by advanced optimization techniques connected with penalization. The data are supposed to be in the form of random variables with normal probability distributions. Several examples were calculated proving the strength of the proposed algorithm.
Los estilos APA, Harvard, Vancouver, ISO, etc.
14

Kozelkov, Andrey, Andrey Kurkin, Dmitry Utkin, Elena Tyatyushkina, Vadim Kurulin, and Dmitry Strelets. "Application of Non-Reflective Boundary Conditions in Three-Dimensional Numerical Simulations of Free-Surface Flow Problems." Geosciences 12, no. 11 (2022): 427. http://dx.doi.org/10.3390/geosciences12110427.

Texto completo
Resumen
This paper considers the issue of using non-reflective boundaries for surface wave simulations within the framework of three-dimensional Navier–Stokes equations. We distinguish a wave damping approach among the known implementations of non-reflective boundary conditions in surface wave simulations. The approach employs a sponge boundary layer to dampen incident waves. In this paper, we describe implementations of this approach on unstructured meshes. We also present the calibration of free parameters, the values of which control wave damping efficiency and the amplitude of reflected waves. Com
Los estilos APA, Harvard, Vancouver, ISO, etc.
15

Kubair, Dhirendra V., Maxwell Pinz, Kaitlin Kollins, Craig Przybyla, and Somnath Ghosh. "Role of exterior statistics-based boundary conditions for property-based statistically equivalent representative volume elements of polydispersed elastic composites." Journal of Composite Materials 52, no. 21 (2018): 2919–28. http://dx.doi.org/10.1177/0021998318758498.

Texto completo
Resumen
The property-based statistically equivalent RVE or P-SERVE has been introduced in the literature as the smallest microstructural volume element in non-uniform microstructures that has effective material properties equivalent to those of the entire microstructure. An important consideration is the application of appropriate boundary conditions for optimal property-based statistically equivalent representative volume element domains. The exterior statistics-based boundary conditions have been developed, accounting for the statistics of fiber distributions and interactions in the domain exterior
Los estilos APA, Harvard, Vancouver, ISO, etc.
16

Li, Yao, Peifeng Su, and Zhe Wang. "Improved Boundary Conditions for a 3D DEM Simple Shear Model." Advances in Civil Engineering 2020 (June 28, 2020): 1–9. http://dx.doi.org/10.1155/2020/5420793.

Texto completo
Resumen
In this study, a 3D simple shear model using DEM is built based on the boundary condition of an NGI-type bidirectional simple shear apparatus. Stack of rings used as lateral constraints in a bidirectional simple shear test is modelled by layers of clumps which is possible to be moved by particles; different contact types and parameters are used to model the sand-loading caps, sand-latex membrane, and sand-sand contacts. A simple shear test using the bidirectional simple shear apparatus is performed for the calibration of the 3D DEM simple shear model. By analyzing the simulation results, the f
Los estilos APA, Harvard, Vancouver, ISO, etc.
17

Kenja, Krishna, Sandeep Madireddy, and Kumar Vemaganti. "Calibration of hyperelastic constitutive models: the role of boundary conditions, search algorithms, and experimental variability." Biomechanics and Modeling in Mechanobiology 19, no. 5 (2020): 1935–52. http://dx.doi.org/10.1007/s10237-020-01318-3.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
18

Pratama, Munawir Bintang, Vengatesan Venugopal, Harman Ajiwibowo, Juventus Welly Ginting, and Franto Novico. "Modelling Tidal Flow Hydrodynamics of Sunda Strait, Indonesia." ILMU KELAUTAN: Indonesian Journal of Marine Sciences 25, no. 4 (2020): 165–72. http://dx.doi.org/10.14710/ik.ijms.25.4.165-172.

Texto completo
Resumen
In the past years, Indonesian people put more attention to Sunda Strait located between Java and Sumatra Islands, one of the busiest straits occupied with residential, recreational, fisheries, transportation, industrial and mining activities. Previous works on numerical modelling of tidal flow hydrodynamics of the Sunda Strait have resulted in good agreement against field data; however, the calibration of the models used was not described in detail. This paper presents the process of setting up the model, extensive calibration, validation and prediction of tidal currents for the Sunda Strait.
Los estilos APA, Harvard, Vancouver, ISO, etc.
19

Krysmon, Sascha, Johannes Claßen, Stefan Pischinger, Georgi Trendafilov, Marc Düzgün, and Frank Dorscheidt. "RDE Calibration—Evaluating Fundamentals of Clustering Approaches to Support the Calibration Process." Vehicles 5, no. 2 (2023): 404–23. http://dx.doi.org/10.3390/vehicles5020023.

Texto completo
Resumen
The topics of climate change and pollutant emission reduction are dominating societal discussions in many areas. In automotive development, with the introduction of real driving emissions (RDE) testing and the upcoming EU7 legislation, there are endless boundary conditions and potential scenarios that need to be evaluated. In terms of vehicle calibration, this is leading to a strong focus on alternative approaches such as virtual calibration. Due to the flexibility of virtual test environments and the variety of RDE scenarios, the amount of data collected is rapidly increasing. Supporting the
Los estilos APA, Harvard, Vancouver, ISO, etc.
20

Ilg, C., C. Liebold, V. Sreenivasa, A. Haufe, C. Karadogan, and M. Liewald. "Displacement based Simulation and Material Calibration based on Digital Image Correlation Part II - Application." IOP Conference Series: Materials Science and Engineering 1284, no. 1 (2023): 012056. http://dx.doi.org/10.1088/1757-899x/1284/1/012056.

Texto completo
Resumen
Abstract An alternative approach to calibrate material models is proposed. The entire displacement field of a specimen measured with a DIC system was converted into boundary conditions by the Envyo® mapping software. These boundary conditions were imposed on all nodes in the corresponding LS-DYNA® simulation model. In this way a digital twin of the specimen geometry and the experimental kinematics was obtained. Considering the local stress equilibrium over the entire specimen and the equilibrium of global force integrated over many hypothetical cross sections, LS-OPT® was used to iteratively d
Los estilos APA, Harvard, Vancouver, ISO, etc.
21

Zevri, Asril, Adam Pamudji Rahardjo, and Djoko Legono. "A PROPOSED TECHNIQUE FOR IMPROVING THE ACCURACY OF TIDAL MODELING OF RIVER NETWORKS CONNECTING TO THE DADAHUP IRRIGATION AREA." ASEAN Engineering Journal 13, no. 3 (2023): 99–106. http://dx.doi.org/10.11113/aej.v13.19393.

Texto completo
Resumen
Optimizing the operational management of tidal irrigation networks is a significant factor in the reactivation program of the swamp irrigation areas in Central Kalimantan Province. Appropriate water level and flow rate control in a tidal environment would provide a better solution for this effort. Monitoring water parameters and hydraulic modeling is an intelligent technique for evaluating irrigation canals' gate system operations. This paper focuses on providing more accurate hydraulic modeling that requires proper boundary conditions and calibration of the canal roughness coefficient. This s
Los estilos APA, Harvard, Vancouver, ISO, etc.
22

Schünemann, Christoph, David Schiela, and Regine Ortlepp. "Guidelines to Calibrate a Multi-Residential Building Simulation Model Addressing Overheating Evaluation and Residents’ Influence." Buildings 11, no. 6 (2021): 242. http://dx.doi.org/10.3390/buildings11060242.

Texto completo
Resumen
Can building performance simulation reproduce measured summertime indoor conditions of a multi-residential building in good conformity? This question is answered by calibrating simulated to monitored room temperatures of several rooms of a multi-residential building for an entire summer in two process steps. First, we did a calibration for several days without the residents being present to validate the building physics of the 3D simulation model. Second, the simulations were calibrated for the entire summer period, including the residents’ impact on evolving room temperature and overheating.
Los estilos APA, Harvard, Vancouver, ISO, etc.
23

Harizi, Khaled, Mohamed Reda Menani, Nabil Chabour, and Sofiane Labar. "Initial assessment of the groundwater flow and budget using Geographic Information System, MODFLOW-2005 and the FREEWAT modeling tool in Bouteldja coastal aquifer (Northern East of Algeria)." Acque Sotterranee - Italian Journal of Groundwater 10, no. 3 (2021): 41–51. http://dx.doi.org/10.7343/as-2021-511.

Texto completo
Resumen
The Bouteldja coastal aquifer is one of the most important groundwater resources in North eastern of Algeria. The region is under a sub-humid climate with an average rainfall of 600-880 mm/y. The unconfined aquifer is constituted of Quaternary sands formations. The hydrogeological characteristics were determined based on previous reports. A very important inflow recharges the sandy aquifer in the Southeastern boundary, in relation to a fault network system linking the aquifer and the Obeira Lake area. Another inflow is observed at the Southern boundary in relation to the exchanges with the all
Los estilos APA, Harvard, Vancouver, ISO, etc.
24

MORA, MARIA GIOVANNA. "LOCAL CALIBRATIONS FOR MINIMIZERS OF THE MUMFORD–SHAH FUNCTIONAL WITH A TRIPLE JUNCTION." Communications in Contemporary Mathematics 04, no. 02 (2002): 297–326. http://dx.doi.org/10.1142/s0219199702000646.

Texto completo
Resumen
We prove that, if u is a function satisfying all Euler conditions for the Mumford–Shah functional and the discontinuity set of u is given by three line segments meeting at the origin with equal angles, then there exists a neighbourhood U of the origin such that u is a minimizer of the Mumford–Shah functional on U with respect to its own boundary conditions on ∂U. The proof is obtained by using the calibration method.
Los estilos APA, Harvard, Vancouver, ISO, etc.
25

Itu, Lucian, Dominik Neumann, Viorel Mihalef, et al. "Non-invasive assessment of patient-specific aortic haemodynamics from four-dimensional flow MRI data." Interface Focus 8, no. 1 (2017): 20170006. http://dx.doi.org/10.1098/rsfs.2017.0006.

Texto completo
Resumen
We introduce a parameter estimation framework for automatically and robustly personalizing aortic haemodynamic computations from four-dimensional magnetic resonance imaging data. The framework is based on a reduced-order multiscale fluid–structure interaction blood flow model, and on two calibration procedures. First, Windkessel parameters of the outlet boundary conditions are personalized by solving a system of nonlinear equations. Second, the regional mechanical wall properties of the aorta are personalized by employing a nonlinear least-squares minimization method. The two calibration proce
Los estilos APA, Harvard, Vancouver, ISO, etc.
26

Riveiro, B., G. Cubreiro, B. Conde, et al. "AUTOMATED CALIBRATION OF FEM MODELS USING LIDAR POINT CLOUDS." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2 (May 30, 2018): 969–74. http://dx.doi.org/10.5194/isprs-archives-xlii-2-969-2018.

Texto completo
Resumen
In present work it is pretended to estimate elastic parameters of beams through the combined use of precision geomatic techniques (laser scanning) and structural behaviour simulation tools. The study has two aims, on the one hand, to develop an algorithm able to interpret automatically point clouds acquired by laser scanning systems of beams subjected to different load situations on experimental tests; and on the other hand, to minimize differences between deformation values given by simulation tools and those measured by laser scanning. In this way we will proceed to identify elastic paramete
Los estilos APA, Harvard, Vancouver, ISO, etc.
27

Ciriello, Luca, and Tomaso Villa. "Biomechanical Evaluation of a Spinal Surgical Instrument: A Numerical–Experimental Approach." Biomechanics 5, no. 2 (2025): 26. https://doi.org/10.3390/biomechanics5020026.

Texto completo
Resumen
Background/Objectives: The conventional practice in clinical settings involves using multi-use surgical instrumentation (SI). However, there is a growing trend towards transforming these multi-use SIs into disposable surgical instruments, driven by economic and environmental considerations without considering the biomechanical aspects. This study focuses on redesigning an SI kit for implanting cervical spinal facet cages. Understanding the boundary conditions (forces, torques, and bending moments) acting on the SI during surgery is crucial for optimizing its design and materials. Therefore, th
Los estilos APA, Harvard, Vancouver, ISO, etc.
28

Kowalska, Magdalena. "Influence of Loading History and Boundary Conditions on Parameters of Soil Constitutive Models." Studia Geotechnica et Mechanica 34, no. 1 (2012): 15–33. http://dx.doi.org/10.1515/sgem-2017-0020.

Texto completo
Resumen
Abstract Parameters of soil constitutive models are not constant. This mainly concerns the strain parameters such as K, G or Eoed modules. What influences their values is not only soil type, structure and consistency, but also the history of stress and strain states. So, it is the question of the current state but also of what happened to the subsoil in the past (regarding geological and anthropological activity) and what impact would have the planned soil–structure interaction. This paper presents an overview of the literature showing how much the soil constitutive model parameters depend on
Los estilos APA, Harvard, Vancouver, ISO, etc.
29

Tscheikner-Gratl, Franz, Peter Zeisl, Carolina Kinzel, et al. "Lost in calibration: why people still do not calibrate their models, and why they still should – a case study from urban drainage modelling." Water Science and Technology 74, no. 10 (2016): 2337–48. http://dx.doi.org/10.2166/wst.2016.395.

Texto completo
Resumen
From a scientific point of view, it is unquestioned that numerical models for technical systems need to be calibrated. However, in sufficiently calibrated models are still used in engineering practice. Case studies in the scientific literature that deal with urban water management are mostly large cities, while little attention is paid to the differing boundary conditions of smaller municipalities. Consequently, the aim of this paper is to discuss the calibration of a hydrodynamic model of a small municipality (15,000 inhabitants). To represent the spatial distribution of precipitation, three
Los estilos APA, Harvard, Vancouver, ISO, etc.
30

Chiominto, Luciano, Emanuela Natale, Giulio D’Emilia, et al. "Responsiveness and Precision of Digital IMUs under Linear and Curvilinear Motion Conditions for Local Navigation and Positioning in Advanced Smart Mobility." Micromachines 15, no. 6 (2024): 727. http://dx.doi.org/10.3390/mi15060727.

Texto completo
Resumen
Abstract: Sensors based on MEMS technology, in particular Inertial Measurement Units (IMUs), when installed on vehicles, provide a real-time full estimation of vehicles’ state vector (e.g., position, velocity, yaw angle, angular rate, acceleration), which is required for the planning and control of cars’ trajectories, as well as managing the in-car local navigation and positioning tasks. Moreover, data provided by the IMUs, integrated with the data of multiple inputs from other sensing systems (such as Lidar, cameras, and GPS) within the vehicle, and with the surrounding information exchanged
Los estilos APA, Harvard, Vancouver, ISO, etc.
31

Boikov, Aleksei, Roman Savelev, Vladimir Payor, and Alexander Potapov. "Universal Approach for DEM Parameters Calibration of Bulk Materials." Symmetry 13, no. 6 (2021): 1088. http://dx.doi.org/10.3390/sym13061088.

Texto completo
Resumen
DEM parameters calibration is the most important step in preparing a DEM model. At the same time, the lack of a universal approach to DEM parameters calibration complicates this process. The paper presents the author’s approach to creating a universal calibration approach based on the physical meaning of the friction coefficients and conducting symmetrical experiments at full scale and in a simulation, as well as the implementation of the approach in the form of a physical test rig. Several experiments were carried out to determine the DEM parameters of six material–boundary pairs. The resulti
Los estilos APA, Harvard, Vancouver, ISO, etc.
32

Ateeq-Ur-Rehman, Sardar, Minh Bui, Shabeh Hasson, and Peter Rutschmann. "An Innovative Approach to Minimizing Uncertainty in Sediment Load Boundary Conditions for Modelling Sedimentation in Reservoirs." Water 10, no. 10 (2018): 1411. http://dx.doi.org/10.3390/w10101411.

Texto completo
Resumen
A number of significant investigations have advanced our understanding of the parameters influencing reservoir sedimentation. However, a reliable modelling of sediment deposits and delta formation in reservoirs is still a challenging problem due to many uncertainties in the modelling process. Modelling performance can be improved by adjusting the uncertainty caused by sediment load boundary conditions. In our study, we diminished the uncertainty factor by setting more precise sediment load boundary conditions reconstructed using wavelet artificial neural networks for a morphodynamic model. The
Los estilos APA, Harvard, Vancouver, ISO, etc.
33

Mu, Guozhen, and Qiongying Lyu. "Analysis of Turbulent Boundary Layer Jet Flow Pattern of TPS Standard Nozzle." Journal of Physics: Conference Series 2228, no. 1 (2022): 012039. http://dx.doi.org/10.1088/1742-6596/2228/1/012039.

Texto completo
Resumen
Abstract The design of the standard nozzle affects the air mass flow calibration accuracy of TPS. The relationship between the outlet diameter and the jet flow pattern is studied by performing jet simulation simulation on the three outlet size standard nozzles under the same boundary conditions. Through the simulation results, it can be seen that the outlet diameter under a single variable determines the value and range of the jet Mach number, which will cause a huge change in the mixing zone of the turbulent boundary layer, which directly affects the turbulent kinetic energy and has a linear
Los estilos APA, Harvard, Vancouver, ISO, etc.
34

Wei, Fei, Zhihui Lyu, Songwu Peng, Rongcong Wang, and Tianran Sun. "Magnetopause Boundary Detection Based on a Deep Image Prior Model Using Simulated Lobster-Eye Soft X-Ray Images." Remote Sensing 17, no. 14 (2025): 2348. https://doi.org/10.3390/rs17142348.

Texto completo
Resumen
This study focuses on the problem of identifying and extracting the magnetopause boundary of the Earth’s magnetosphere using the Soft X-ray Imager (SXI) onboard the Solar Wind Magnetosphere Ionosphere Link Explorer (SMILE) mission. The SXI employs lobster-eye optics to perform panoramic imaging of the magnetosphere based on the Solar Wind Charge Exchange (SWCX) mechanism. However, several factors are expected to hinder future in-orbit observations, including the intrinsically low signal-to-noise ratio (SNR) of soft-X-ray emission, pronounced vignetting, and the non-uniform effective-area distr
Los estilos APA, Harvard, Vancouver, ISO, etc.
35

Tian, Yu, Jun Zhang, Zongjin Ren, Wei Liu, Zhenyuan Jia, and Qingbing Chang. "A novel calibration method based on Kirchhoff theory for piezoelectric dynamometer." Sensor Review 38, no. 2 (2018): 137–45. http://dx.doi.org/10.1108/sr-05-2017-0074.

Texto completo
Resumen
Purpose This paper aims to improve calibration and force measurement accuracy of multi-sensors’ piezoelectric dynamometer used in thrust measurement of rocket/air vehicle engine. Design/methodology/approach This paper presents a mapping solution method of sensors’ outputs based on the Kirchhoff thin plate theory, builds force-deformation differential equations with specific boundary conditions, uses finite difference (FD) method to solve the equations and analyzes outputs in offset loading forces in four-sensor square layout in main direction. The resultant force deviations calculated by the K
Los estilos APA, Harvard, Vancouver, ISO, etc.
36

Santanello, Joseph A., Sujay V. Kumar, Christa D. Peters-Lidard, Ken Harrison, and Shujia Zhou. "Impact of Land Model Calibration on Coupled Land–Atmosphere Prediction." Journal of Hydrometeorology 14, no. 5 (2013): 1373–400. http://dx.doi.org/10.1175/jhm-d-12-0127.1.

Texto completo
Resumen
Abstract Land–atmosphere (LA) interactions play a critical role in determining the diurnal evolution of both planetary boundary layer (PBL) and land surface heat and moisture budgets, as well as controlling feedbacks with clouds and precipitation that lead to the persistence of dry and wet regimes. In this study, the authors examine the impact of improved specification of land surface states, anomalies, and fluxes on coupled Weather Research and Forecasting Model (WRF) forecasts during the summers of extreme dry (2006) and wet (2007) land surface conditions in the U.S. southern Great Plains. T
Los estilos APA, Harvard, Vancouver, ISO, etc.
37

Kuzmanovic, Vladan, Ljubodrag Savic, and John Stefanakos. "Long-term thermal two- and three-dimensional analysis of roller compacted concrete dams supported by monitoring verification." Canadian Journal of Civil Engineering 37, no. 4 (2010): 600–610. http://dx.doi.org/10.1139/l10-004.

Texto completo
Resumen
This paper presents two-dimensional (2D) and three-dimensional (3D) numerical models for unsteady phased thermal analysis of RCC dams. The time evolution of a thermal field has been modeled using the actual dam shape, RCC technology and the adequate description of material properties. Model calibration and verification has been done based on the field investigations of the Platanovryssi dam, the highest RCC dam in Europe. The results of a long-term thermal analysis, with actual initial and boundary conditions, have shown a good agreement with the observed temperatures. The influence of relevan
Los estilos APA, Harvard, Vancouver, ISO, etc.
38

Tönsmann, Max, Fabian Kröhl, Philipp Cavadini, Philip Scharfer, and Wilhelm Schabel. "Calibration Routine for Quantitative Three-Dimensional Flow Field Measurements in Drying Polymer Solutions Subject to Marangoni Convection." Colloids and Interfaces 3, no. 1 (2019): 39. http://dx.doi.org/10.3390/colloids3010039.

Texto completo
Resumen
Surface-tension induced flows may have a significant impact on the surface topography of thin films or small printed structures derived from polymer solution processing. Despite a century of research on Marangoni convection, the community lacks quantitative experimental flow field data, especially from within drying solutions. We utilize multifocal micro particle tracking velocimetry (µPTV) to obtain these data and show a calibration routine based on point spread function (PSF) simulations as well as experimental data. The results account for a varying sample refractive index, beneficial cover
Los estilos APA, Harvard, Vancouver, ISO, etc.
39

Zacchei, Enrico, and Caio Gorla Nogueira. "Calibration of boundary conditions correlated to the diffusivity of chloride ions: An accurate study for random diffusivity." Cement and Concrete Composites 126 (February 2022): 104346. http://dx.doi.org/10.1016/j.cemconcomp.2021.104346.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
40

Li, Yujian, Yixin Geng, and Liang Mao. "Calibration method for Manning's roughness coefficient for a river flume model." Water Supply 20, no. 8 (2020): 3597–603. http://dx.doi.org/10.2166/ws.2020.235.

Texto completo
Resumen
Abstract This paper takes the Tarim River as an example to study the selection of Manning's roughness coefficient (n) in numerical simulation and presents a new method for calibrating Manning's roughness coefficient of a flume model. The measured topographic data and hydraulic data obtained from the flume experiments are taken as the initial boundary conditions in flow simulation, and n value for a flume model of the Qiman reach of Tarim River is calibrated by using a CCHE2D model. The consistency between the simulated water surface and the measured water surface with different n value is comp
Los estilos APA, Harvard, Vancouver, ISO, etc.
41

Euzenat, F., L. A. Baiza Martinez, W. Yu, P. Maheshwari, and M. Pallud. "Wake structure analysis of a wind turbine under various atmospheric flow conditions and its application for mid-fidelity calibration." Journal of Physics: Conference Series 2767, no. 9 (2024): 092029. http://dx.doi.org/10.1088/1742-6596/2767/9/092029.

Texto completo
Resumen
Abstract A coupled Actuator Line Method (ALM) Large Eddy Simulation (LES) is used to simulate the wake structure of an isolated wind turbine. The wake centre position, boundary, and dynamics downstream of the wind turbine is determined under different atmospheric flow conditions, including neutral, stable, and unstable stratification. The wake centre lateral displacement and autocorrelation are seen to be affected by the atmospheric flow conditions. Finally, the instantaneous wake structure is then used as reference to improve the accuracy of mid-fidelity approach.
Los estilos APA, Harvard, Vancouver, ISO, etc.
42

Henrichs, M., A. Welker, and M. Uhl. "Modelling of biofilters for ammonium reduction in combined sewer overflow." Water Science and Technology 60, no. 3 (2009): 825–31. http://dx.doi.org/10.2166/wst.2009.397.

Texto completo
Resumen
Biofiltration has proved to be a useful system to treat combined sewer overflow (CSO). The study presented uses numerical simulation to detect the critical operating conditions of the filter. The multi-component reactive transport module CW2D was used for the simulation study. Single-event simulations of lab-scale-column experiments with varying boundary conditions regarding the throttle outflow rate were carried out. For the calibration of the CW2D model measurement results of four experiments in two lab-scale columns were used. The model was validated by simulating four events of two further
Los estilos APA, Harvard, Vancouver, ISO, etc.
43

Audet, Lise, Sophie Duchesne, and Nomessi Kokutse. "A regionalized river water quality model calibration method based on watershed physical characteristics: application to the Cau River in Vietnam." Revue des sciences de l’eau 31, no. 3 (2018): 251–69. http://dx.doi.org/10.7202/1054306ar.

Texto completo
Resumen
A methodology is proposed for the calibration of river water quality models on large watersheds, in the absence of intensive measurements for water quality and quantity. This methodology is based on: 1) the use of the results from a hydrological model to provide the required hydrological variables to the water quality model; 2) five assumptions for the definition of initial and boundary conditions; 3) a three-step regionalized calibration method, in which the specific characteristics of the different subwatersheds are taken into account and 4) the adjustment of some parameters in order to repr
Los estilos APA, Harvard, Vancouver, ISO, etc.
44

Salaris, M., S. Cassisi, R. P. Schiavon, and A. Pietrinferni. "Effective temperatures of red giants in the APOKASC catalogue and the mixing length calibration in stellar models." Astronomy & Astrophysics 612 (April 2018): A68. http://dx.doi.org/10.1051/0004-6361/201732340.

Texto completo
Resumen
Red giants in the updated APOGEE-Kepler catalogue, with estimates of mass, chemical composition, surface gravity and effective temperature, have recently challenged stellar models computed under the standard assumption of solar calibrated mixing length. In this work, we critically reanalyse this sample of red giants, adopting our own stellar model calculations. Contrary to previous results, we find that the disagreement between the Teff scale of red giants and models with solar calibrated mixing length disappears when considering our models and the APOGEE-Kepler stars with scaled solar metal d
Los estilos APA, Harvard, Vancouver, ISO, etc.
45

Absi, Rafik, Hitoshi Tanaka, Loreline Kerlidou та Alicia André. "EDDY VISCOSITY PROFILES FOR WAVE BOUNDARY LAYERS: VALIDATION AND CALIBRATION BY A k-ω MODEL". Coastal Engineering Proceedings 1, № 33 (2012): 63. http://dx.doi.org/10.9753/icce.v33.waves.63.

Texto completo
Resumen
Eddy viscosity in wave boundary layers is a key parameter in coastal engineering. Two analytical eddy viscosity profiles present a particular interest for practical applications: the parabolic-uniform profile (Myrhaug 1982, van Rijn 1993, Liu and Sato 2006) and the exponential-linear profile (Gelfenbaum and Smith 1986, Beach and Sternberg 1988, Hsu and Jan 1998, Absi 2010). The aim of our study is to assess and validate these two profiles by: (1) investigation of eddy viscosity in steady fully developed plane channel flow; (2) comparisons with numerical results of the two equation baseline (BS
Los estilos APA, Harvard, Vancouver, ISO, etc.
46

Gaiolini, Mattia, Nicolò Colombani, Gianluigi Busico, Fabrizio Rama, and Micòl Mastrocicco. "Impact of Boundary Conditions Dynamics on Groundwater Budget in the Campania Region (Italy)." Water 14, no. 16 (2022): 2462. http://dx.doi.org/10.3390/w14162462.

Texto completo
Resumen
Groundwater budgets and fluxes are affected by human activities and climate change. Numerical models are cost-effective tools to investigate the different components of the hydrologic cycle. In this study, a groundwater flow model of the unconfined aquifers of the Campania region (Italy) has been developed and calibrated in Processing Modflow 11, resulting in an accurate assessment of groundwater fluxes and their trends over fifteen years (2000–2015). The model was implemented using a high-resolution grid to capture small hydrogeological features such as wells and rivers and informed by time v
Los estilos APA, Harvard, Vancouver, ISO, etc.
47

Meshkovsky, Vitaly, Anatoly Sdobnikov, Sergey Churilin, and Yuri Kisanov. "Numerical investigations of shape of the reflecting surface made of knitted mesh fabric being pulled on the curvilinear frame." EPJ Web of Conferences 221 (2019): 01031. http://dx.doi.org/10.1051/epjconf/201922101031.

Texto completo
Resumen
This paper presents the surface shaping numerical investigations results of truss space constructions mesh reflectors, such as antennas and calibration and adjustment satellites. Shape-generating structure of mentioned constructions adds up to set of triangular facets, made in the form of spatio-curvilinear bar frames, bearing reflecting knitted mesh fabric pulled on it. This work proposes the algorithm of calculation of step-by-step reflecting mesh pulling on the bearing frame’s bars process, using finite elements method. Numerical execution of the developed algorithm involves for resolving t
Los estilos APA, Harvard, Vancouver, ISO, etc.
48

Langston, L. S., and R. G. Kasper. "Analysis of an Electromagnetic Boundary Layer Probe for Low Magnetic Reynolds Number Flows." Journal of Fluids Engineering 115, no. 4 (1993): 726–31. http://dx.doi.org/10.1115/1.2910205.

Texto completo
Resumen
Electromagnetic (EM) flow meters are used to measure volume flow rates of electrically conductive fluids (e.g., low magnetic Reynolds number flows of seawater, milk, etc.) in pipe flows. The possibility of using a modified form of EM flow meter to nonobtrusively measure boundary-layer flow characteristics is analytically investigated in this paper. The device, named an electromagnetic boundary layer (EBL) probe, would have a velocity integral-dependent voltage induced between parallel wall-mounted electrodes, as a conductive fluid flows over a dielectric wall and through the probe’s magnetic f
Los estilos APA, Harvard, Vancouver, ISO, etc.
49

Medina-Cetina, Zenon, Ahran Song, Yichuan Zhu, Alma Rosa Pineda-Contreras, and Amy Rechenmacher. "Global and Local Deformation Effects of Dry Vacuum-Consolidated Triaxial Compression Tests on Sand Specimens: Making a Database Available for the Calibration and Development of Forward Models." Materials 15, no. 4 (2022): 1528. http://dx.doi.org/10.3390/ma15041528.

Texto completo
Resumen
A comprehensive experimental database containing results of a series of dry vacuum-consolidated triaxial compression tests was populated. The tests were performed on sand specimens and conducted under similar experimental conditions, in which specimens’ boundary deformation was captured using a three-dimensional digital image correlation analysis (3D-DIC). The use of a standard triaxial device along with the 3D-DIC technology allowed the specimens’ global and local boundary displacement fields to be computed from start to end of the compression phase. By repeating each test under the same expe
Los estilos APA, Harvard, Vancouver, ISO, etc.
50

Zanchi, Barbara, Matteo Zucchi, and Alessio Radice. "On the Relationship between Experimental and Numerical Modelling of Gravel-Bed Channel Aggradation." Hydrology 6, no. 1 (2019): 9. http://dx.doi.org/10.3390/hydrology6010009.

Texto completo
Resumen
This communication explores the use of numerical modelling to simulate the hydro-morphologic response of a laboratory flume subject to sediment overloading. The numerical model calibration was performed by introducing a multiplicative factor in the Meyer–Peter and Müller transport formula, in order to achieve a correspondence with the bed and water profiles recorded during a test carried out under a subcritical flow regime. The model was validated using a second subcritical test, and then run to simulate an experiment during which morphological changes made the water regime switch from subcrit
Los estilos APA, Harvard, Vancouver, ISO, etc.
Ofrecemos descuentos en todos los planes premium para autores cuyas obras están incluidas en selecciones literarias temáticas. ¡Contáctenos para obtener un código promocional único!

Pasar a la bibliografía