Correlation Analysis of VLSTRACK Model Results with Theoretical and Experimental Data for Rigid Sphere Terminal Velocities

1999 ◽  
Author(s):  
Josip Z. Soln ◽  
Judith T. McCullen
Keyword(s):  
Experimental Data ◽  
Correlation Analysis ◽  
Rigid Sphere

Thick Composite Plates Subjected to Lateral Loading

1987 ◽  
Vol 54 (3) ◽  
pp. 611-616 ◽  
Author(s):  
D. S. Cairns ◽  
P. A. Lagace
Keyword(s):  
Experimental Data ◽  
Analytical Solution ◽  
Experimental Test ◽  
Stress Function ◽  
Orthotropic Plate ◽  
Composite Plates ◽  
Failure Criteria ◽  
Lateral Loading ◽  
Rigid Sphere ◽  
Damage Initiation

An analytical solution for an orthotropic plate subjected to general lateral loading is presented. The solution uses a stress function approach to obtain the localized stresses and strains due to the loading by an axisymmetric rigid sphere. Plots of load versus local indentation are compared with experimental test data previously reported in the literature. The analysis agrees well with the experimental data and could be used in conjunction with failure criteria to predict damage initiation in such a localized region.

scholarly journals Universal mechanism for air entrainment during liquid impact

2016 ◽  
Vol 789 ◽  
pp. 708-725 ◽  
Author(s):  
Maurice H. W. Hendrix ◽  
Wilco Bouwhuis ◽  
Devaraj van der Meer ◽  
Detlef Lohse ◽  
Jacco H. Snoeijer
Keyword(s):  
Experimental Data ◽  
Air Entrainment ◽  
Stokes Number ◽  
Liquid Pool ◽  
Boundary Integral ◽  
Boundary Integral Method ◽  
Rigid Sphere ◽  
Entrained Air ◽  
The Impact ◽  
Universal Mechanism

When a millimetre-sized liquid drop approaches a deep liquid pool, both the interface of the drop and the pool deform before the drop touches the pool. The build-up of air pressure prior to coalescence is responsible for this deformation. Due to this deformation, air can be entrained at the bottom of the drop during the impact. We quantify the amount of entrained air numerically, using the boundary integral method for potential flow for the drop and the pool, coupled to viscous lubrication theory for the air film that has to be squeezed out during impact. We compare our results with various experimental data and find excellent agreement for the amount of air that is entrapped during impact onto a pool. Next, the impact of a rigid sphere onto a pool is numerically investigated and the air that is entrapped in this case also matches with available experimental data. In both cases of drop and sphere impact onto a pool the numerical air bubble volume $V_{b}$ is found to be in agreement with the theoretical scaling $V_{b}/V_{drop/sphere}\sim \mathit{St}^{-4/3}$, where $\mathit{St}$ is the Stokes number. This is the same scaling as has been found for drop impact onto a solid surface in previous research. This implies a universal mechanism for air entrainment for these different impact scenarios, which has been suggested in recent experimental work, but is now further elucidated with numerical results.

scholarly journals Variance of wind estimates using spaced antenna techniques with the MU radar

2004 ◽  
Vol 22 (11) ◽  
pp. 3863-3868
Author(s):  
G. Hassenpflug ◽  
M. Yamamoto ◽  
S. Fukao
Keyword(s):  
Experimental Data ◽  
Correlation Analysis ◽  
Error Propagation ◽  
Cross Correlation ◽  
Anisotropic Scattering ◽  
Standard Theory ◽  
Horizontal Wind ◽  
Mu Radar ◽  
Full Correlation Analysis

Abstract. Variance of horizontal wind estimates in conditions of anisotropic scattering are obtained for the Spaced Antenna (SA) Full Correlation Analysis (FCA) method of Holloway et al. (1997b) and Doviak et al. (1996), but are equally applicable to the Briggs method of FCA. Variance and covariance of cross-correlation magnitudes are theoretically estimated, and the standard theory of error propagation is used to estimate the variance of the wind components for the infinite SNR case. The effect of baseline orientation is investigated, and experimental data from the MU radar in Japan is presented.

scholarly journals Results of the correlation analysis of experimental data about initial moisture content and water absorption of the foam-polymer-mineral insulation of an underground heat steel pipe

2018 ◽  
Vol 3 ◽  
pp. 11-16
Author(s):  
Belyj V.S. ◽  
Bryl S.V.
Keyword(s):  
Experimental Data ◽  
Correlation Analysis ◽  
Moisture Content ◽  
Water Absorption ◽  
Initial Moisture Content ◽  
Random Variable ◽  
Final Moisture Content ◽  
Steel Pipe ◽  
Statistical Hypothesis ◽  
Correlation Dependence

In this article the technique of a research of correlation dependence between initial and final moisture content of the foam-polymer-mineral (PPM) insulation of an underground heat steel pipe and also results of check of a statistical hypothesis of a type of distribution of a random variable of water absorption of PPM isolation is offered. The nature of distribution established as a result of a research speaks about existence of a limit of opportunities of PPM isolation of a pipe for water absorption – isolation with low initial moisture content is capable to absorb in itself more moisture and vice versa. Absorption of moisture happens until the value of final moisture content of PPM isolation does not reach extremely possible value approximately identical on all volume of isolation.

Correlation Analysis of Seamless Fabric Performance and Sizing Effect

2013 ◽  
Vol 785-786 ◽  
pp. 1121-1124
Author(s):  
Yu Xiu Yan ◽  
Ling He ◽  
Yan Na Feng ◽  
Jian Wei Tao ◽  
Zi Min Jin
Keyword(s):  
Experimental Data ◽  
Correlation Analysis ◽  
Statistical Methods ◽  
Dimensional Stability ◽  
Shear Stiffness ◽  
Close Correlation ◽  
Bending Rigidity ◽  
Compression Properties ◽  
Recovery Angle ◽  
Bending Length

The study selects cylinder cloth which weaved by seamless fabric common materials as experimental samples, measures compressed thickness, bending length, extensibility, bending rigidity and etc index of fabrics, uses the stereotyped pleat recovery angle to characterize the setting effect. According to the experimental data, using statistical methods to analyze the correlation of these indicators and setting effects, ultimate goal is to improve fabric dimensional stability whatever wearing or stored, to provide a reference for optimizing the seamless fabric stereotypia. Results show that there is a close correlation between compression properties T2, T100, drape performance F0, shear stiffness G and stereotyped pleat recovery Angle.

Projectile mass and energy dependence of multifractal detrended cross-correlation analysis of pseudorapidity space and azimuthal space in high energy nuclear collisions

2019 ◽  
Vol 28 (03) ◽  
pp. 1950012 ◽  
Author(s):  
Sucharita Chatterjee ◽  
Dipak Ghosh ◽  
Srimonti Dutta
Keyword(s):  
Experimental Data ◽  
Correlation Analysis ◽  
Long Range ◽  
Energy Dependence ◽  
Cross Correlation ◽  
High Energy ◽  
Long Range Correlations ◽  
Nuclear Collisions ◽  
Cross Correlation Analysis ◽  
The Cross

This paper studies the cross-correlation between the pseudorapidity and azimuthal distributions of the shower particles emitted in [Formula: see text]S-AgBr interactions at 200[Formula: see text]GeV and [Formula: see text]O-AgBr interactions at 60[Formula: see text]GeV applying Multifractal detrended cross-correlation analysis (MF-DXA) methodology. The cross-correlation between the pseudorapidity ([Formula: see text]) space and the azimuthal ([Formula: see text]) space is found to exhibit multifractality in case of both the interactions. The results obtained from the analysis of the experimental data were compared with those obtained for the randomly shuffled data for both the interactions, and the results revealed that the multifractality is due to the presence of long-range correlations. The study clearly indicates that the strength of the cross-correlation depends on both the projectile mass and energy.

Establishing the Model of Cashmere Knitted Fabric Style Evaluation Based on BP Neural Network

2011 ◽  
Vol 332-334 ◽  
pp. 2001-2005
Author(s):  
Ling Cheng ◽  
Jing Jing Sun
Keyword(s):  
Neural Network ◽  
Experimental Data ◽  
Mechanical Property ◽  
Correlation Analysis ◽  
Bp Neural Network ◽  
Basic Structure ◽  
Knitted Fabric ◽  
Structure Parameters ◽  
Knitted Fabrics ◽  
Property Index

This paper took KES fabric style instrument to test and evaluate basic physical properties and comprehensive style of 22 kinds of cashmere knitted fabrics or cashmere and yak cashmere blended knitted fabrics which have different structure, found basic structure parameters and mechanical property index were significantly correlated with cashmere knitted fabric style by correlation analysis, took BP neural network to analyze and train experimental data, established the model of cashmere knitted fabric style evaluation which is better to provide basis for practical production.

scholarly journals Correlation Analysis of Experimental Data Applied in the Study of the Extraction Process

2021 ◽  
Vol 09 (12) ◽  
pp. 3019-3031
Author(s):  
Mariana Rusu ◽  
Aliona Ghendov-Mosanu ◽  
Rodica Sturza
Keyword(s):  
Experimental Data ◽  
Correlation Analysis ◽  
Extraction Process
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