scholarly journals NUMERICAL SIMULATION OF CROSS-SHORE PROFILE EVOLUTION USING OPENFOAM

2017 ◽  
pp. 22
Author(s):  
Nikolaos Karagiannis ◽  
Theofanis Karambas ◽  
Christopher Koutitas
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Wave Propagation ◽  
Sediment Transport ◽  
Iterative Procedure ◽  
Numerical Approach ◽  
Numerical Results ◽  
Hydrodynamic Characteristics ◽  
Sloping Beach ◽  
Comparison With Experimental Data

In the present work, an innovative numerical approach was developed coupling two models in order to simulate the wave propagation over a sloping beach and the sediment transport in surf and swash zones. The first model, synthesized on the basis of OpenFOAM (version 2.4.0) is used to describe the hydrodynamic characteristics of the flow and the wave propagation while the second one is applied for the sediment transport and erosion/deposition prediction using the results of the first model. The method above constitutes an iterative procedure which is tested hereby and seems to yield satisfactory numerical results in comparison with experimental data (Dette 1998).

Experimental and Numerical Study of the Response of an Axial Compressor to Distorted Inlet Flow

1988 ◽  
Vol 110 (4) ◽  
pp. 355-360 ◽  
Author(s):  
G. Billet ◽  
J. Huard ◽  
P. Chevalier ◽  
P. Laval
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Numerical Study ◽  
Axial Compressor ◽  
Numerical Approach ◽  
Compressor Blade ◽  
Numerical Results ◽  
Test Stand ◽  
Viscous Effects ◽  
Inlet Flow

A model representing the response of fixed or rotating axial compressor blade-rows is coupled to a 3-D numerical simulation of the flow outside the blade rows. The code can be used to study nonuniform compressible 3-D flows through turbomachines. The fluid is assumed to be inviscid in the space outside the rows, while the viscous effects are taken into account inside. Numerical results are compared with experimental data obtained on a test stand with steady distorted inflow. This comparison shows that this numerical approach is capable of predicting the response of the compressor. This work is part of a larger project aimed at predicting the response of a compressor to a nonuniform inlet flow that is periodic in time, or fully unsteady.

Wave Propagation in Dispersed Random Media

1991 ◽  
Vol 253 ◽  
Author(s):  
Ping Sheng ◽  
Xiaodun Jing ◽  
Minyao Zhou
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Wave Propagation ◽  
Random Media ◽  
Colloidal Suspensions ◽  
Quantitative Agreement ◽  
Dispersion Relations ◽  
Potential Approximation ◽  
Acoustic Excitations ◽  
Comparison With Experimental Data

ABSTRACTWe present a generalized coherent potential approximation for the identification of quasi propagating modes in dispersed random media and the calculation of their dispersion relations. The validity of this approach is supported by multiple-scattering calculations, numerical simulation, and comparison with experimental data on acoustic excitations in colloidal suspensions. Our theory yields excellent quantitative agreement with the measured dispersion relations and provides an explanation for the observed frequency gaps in the excitations spectra.

scholarly journals Numerical Simulation of the Full-Polarimetric Emissivity of Vines and Comparison with Experimental Data

2009 ◽  
Vol 1 (3) ◽  
pp. 300-317 ◽  
Author(s):  
Alberto Martinez-Vazquez ◽  
Adriano Camps ◽  
Juan Manuel Lopez-Sanchez ◽  
Mercedes Vall-llossera ◽  
Alessandra Monerris
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Comparison With Experimental Data

scholarly journals Modelling the Thermal Energy Storage of Cementitious Mortars Made with PCM-Recycled Brick Aggregates

Materials ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1064 ◽  
Author(s):  
Christoph Mankel ◽  
Antonio Caggiano ◽  
Andreas König ◽  
Diego Said Schicchi ◽  
Mona Nazari Sam ◽  
...  
Keyword(s):  
Experimental Data ◽  
Phase Change Materials ◽  
Numerical Approach ◽  
Numerical Results ◽  
Experimental Program ◽  
Heat Accumulation ◽  
Modelling Method ◽  
Further Development ◽  
Capacity Method ◽  
Good Agreement

This paper reports a numerical approach for modelling the thermal behavior and heat accumulation/liberation of sustainable cementitious composites made with Recycled Brick Aggregates (RBAs) employed as carriers for Phase-Change Materials (PCMs). In the framework of the further development of the fixed grid modelling method, classically employed for solving the well-known Stefan problem, an enthalpy-based approach and an apparent calorific capacity method have been proposed and validated. More specifically, the results of an experimental program, following an advanced incorporation and immobilization technique, developed at the Institut für Werkstoffe im Bauwesen for investigating the thermal responses of various combinations of PCM-RBAs, have been considered as the benchmark to calibrate/validate the numerical results. Promising numerical results have been obtained, and temperature simulations showed good agreement with the experimental data of the analyzed mixtures.

Soft Tissue Strain and Facet Face Interaction in the Lumbar Intervertebral Joint—Part II: Calculated Results and Comparison With Experimental Data

1983 ◽  
Vol 105 (3) ◽  
pp. 210-215 ◽  
Author(s):  
A. F. Tencer ◽  
T. G. Mayer
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Soft Tissue ◽  
Ligamentum Flavum ◽  
Compressive Strain ◽  
Shear Resistance ◽  
Facet Joints ◽  
Lateral Bending ◽  
Tissue Strain ◽  
Comparison With Experimental Data

A numerical simulation of soft-tissue strain and facet face interaction in the lumbar intervertebral joint under load was performed. The results, compared with a previous experimental sectioning study, showed that disk fiber strain was the main mechanism in shear resistance, except posterior shear, where the facets were main load bearing members. In axial compression, compression of the annulus was found, with a significant decrease in compressive strain resulting from annulus bulging, but no contact was found in the facet joints. The posterior ligaments, except for the facet capsules and ligamentum flavum, were found to be active only in flexion and lateral bending, while the facets and the disk both played major roles in resisting axial torsion moments.

Behavior of Simulated Molten Metal at Channel Modeled Boiling Water Reactors

2017 ◽  
Author(s):  
Yutaro Hihara ◽  
Kota Matsuura ◽  
Hideaki Monji ◽  
Yutaka Abe ◽  
Akiko Kaneko ◽  
...  
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Numerical Analysis ◽  
Molten Metal ◽  
Numerical Results ◽  
Boiling Water ◽  
Severe Accident ◽  
Boiling Water Reactors ◽  
Simulation Code ◽  
Water Reactors

When a severe accident occurs, decommissioning work becomes important task. In the decommissioning work after the severe accident, establishing the way to estimate the sedimentation place of molten debris is important. However, the technique to estimate exactly sedimentation place has not been enough. Therefore, the detailed and phenomenological numerical simulation code named JUPITER for predicting the molten core behavior is under development. The comparison between experimental and numerical results is necessary to clarify the validity of the numerical analysis code. This study provides the experimental data for a BWR to examine the numerical simulation code in order to contribute to progress of the decommissioning work.

Numerical Simulation of Masonry Walls Subjected to Blast Loads

2012 ◽  
Vol 461 ◽  
pp. 93-96
Author(s):  
Xiao Jun Yuan ◽  
Li Chen ◽  
Jian Hua Wu ◽  
Jing Xin Tang
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Finite Element ◽  
Numerical Results ◽  
Dynamic Responses ◽  
Masonry Walls ◽  
Blast Loads ◽  
Finite Element Program ◽  
Element Program ◽  
Good Agreement

Much effort has been devoted to studying the blast properties of masonry infilled panels due to recent increasing accidental blast events. In this paper, the blast properties of the masonry infilled walls were analyzed with the finite element program LS-DYNA by the way of distinctive consideration of the bricks and mortar material in contrast to the experimental data. The numerical results have a good agreement with experimental data. The reliability and efficiency of this method in predicting the dynamic responses of masonry walls to blast loads was proven.

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