Two-dimensional resistivity inversion using a new topographical correction method

1998 ◽  
Author(s):  
M. Varga ◽  
A. Kovacs ◽  
C. Gaspar ◽  
S. Gisbert
Keyword(s):  
Correction Method ◽  
Two Dimensional ◽  
Resistivity Inversion

Two-dimensional resistivity inversion using a new topographical correction method

1999 ◽  
Author(s):  
M. Varga ◽  
A. Kovács ◽  
C. Gáspár ◽  
S. Gisbert
Keyword(s):  
Correction Method ◽  
Two Dimensional ◽  
Resistivity Inversion

A two-dimensional temperature correction method for pressure-sensitive paint measurement on helicopter rotor blades

2020 ◽  
Vol 61 (4) ◽  
Author(s):  
Lingrui Jiao ◽  
Xu Liu ◽  
Zheyu Shi ◽  
Weiguo Zhang ◽  
Lei Liang ◽  
...  
Keyword(s):  
Correction Method ◽  
Temperature Correction ◽  
Rotor Blades ◽  
Helicopter Rotor ◽  
Two Dimensional ◽  
Pressure Sensitive Paint ◽  
Pressure Sensitive ◽  
Helicopter Rotor Blades

4766377 Phase correction method in two-dimensional NMR spectroscopy

1989 ◽  
Vol 7 (2) ◽  
pp. V-VI ◽  
Author(s):  
Muneki Ohuchi ◽  
Soukichi Uchida
Keyword(s):  
Nmr Spectroscopy ◽  
Correction Method ◽  
Phase Correction ◽  
Two Dimensional

Self-correction method of out-of-plane motions in two-dimensional digital image correlation

2016 ◽  
Vol 232 (9) ◽  
pp. 1672-1676 ◽  
Author(s):  
Wentao Yan ◽  
Feng Lin
Keyword(s):  
Digital Image Correlation ◽  
Digital Image ◽  
Correlation Method ◽  
Correction Method ◽  
Image Correlation ◽  
Two Dimensional ◽  
Monitoring Method ◽  
Strain Monitoring ◽  
Out Of Plane ◽  
Relationship Of

Strain monitoring is very important in the manufacturing, assembling, installation and servicing processes in both mechanical and civil engineering fields. Two-dimensional digital image correlation is a simple, efficient strain monitoring method, but one major bottleneck is the unacceptable error due to the unavoidable out-of-plane motions of the object in practice. We propose a “self-correction” method: employing the originally extracted strain values in different directions to correct the errors due to out-of-plane motions. It is applicable to many engineering applications with known relationship of strains in different directions. A uniaxial tension test was conducted to demonstrate the effectiveness and practicality of this self-correction method. Compared with other correction methods, this method is not only simpler but also more efficient in correcting errors due to the lens distortion caused by self-heating. Both the experiment and theoretical analyses demonstrate that this self-correction method maintains the high accuracy of the digital image correlation method.

The Flow of A Falling Ellipse: Numerical Method and Classification

2015 ◽  
Vol 31 (6) ◽  
pp. 771-782 ◽  
Author(s):  
R.-J. Wu ◽  
S.-Y. Lin
Keyword(s):  
Reynolds Number ◽  
Stokes Equations ◽  
Correction Method ◽  
Navier Stokes ◽  
Immersed Boundary ◽  
Two Dimensional ◽  
Inertia Moment ◽  
Navier Stokes Equations ◽  
Direct Forcing ◽  
Ib Method

AbstractA modified direct-forcing immersed-boundary (IB) pressure correction method is developed to simulate the flows of a falling ellipse. The pressure correct method is used to solve the solutions of the two dimensional Navier-Stokes equations and a direct-forcing IB method is used to handle the interaction between the flow and falling ellipse. For a fixed aspect ratio of an ellipse, the types of the behavior of the falling ellipse can be classified as three pure motions: Steady falling, fluttering, tumbling, and two transition motions: Chaos, transition between steady falling and fluttering. Based on two dimensionless parameters, Reynolds number and the dimensionless moment of inertia, a Reynolds number-inertia moment phase diagram is established. The behaviors and characters of five falling regimes are described in detailed.

scholarly journals Correction of raindrop size distributions measured by Parsivel disdrometers, using a two-dimensional-video-disdrometer as a reference

2014 ◽  
Vol 7 (8) ◽  
pp. 8521-8579 ◽  
Author(s):  
T. H. Raupach ◽  
A. Berne
Keyword(s):  
Theoretical Models ◽  
Correction Method ◽  
Two Dimensional ◽  
Rain Gauges ◽  
Raindrop Size Distribution ◽  
Field Campaigns ◽  
Raindrop Size ◽  
First And Second Generation ◽  
Rain Rates ◽  
Mediterranean France

Abstract. The raindrop size distribution (DSD) quantifies the micro-structure of rainfall and is critical to studying precipitation processes. We present a method to improve the accuracy of DSD measurements from Parsivel disdrometers, using a two-dimensional-video-disdrometer (2DVD) as a reference instrument. Parsivel disdrometers bin recorded raindrops into velocity and equivolume diameter classes, but may mis-estimate the number of drops per class. We define a filter for raw disdrometer measurements to remove particles that are unlikely to be plausible raindrops. In our correction method, drop velocities are corrected with reference to theoretical models of terminal drop velocity. Non-plausible measurements are removed. Lastly, drop concentrations are corrected such that on average the Parsivel concentrations match those recorded by a 2DVD. The correction can be trained on and applied to data from both generations of Parsivel disdrometers. The method was applied to data collected during field campaigns in Mediterranean France, for a network of first and second generation Parsivel disdrometers. We compared the moments of the resulting DSDs to those of a collocated 2DVD, and the resulting DSD-derived rain rates to collocated rain gauges. The correction vastly improved the accuracy of the moments of the Parsivel DSDs, and in the majority of cases the rain rate match with collocated rain gauges was improved.

A Simple Model for Fluid Flow and Particle Motion Inside the Human Larynx

Volume 4 ◽  
2004 ◽  
Author(s):  
C. Ersahin ◽  
I. B. Celik ◽  
O. C. Elci ◽  
I. Yavuz ◽  
J. Li ◽  
...  
Keyword(s):  
Flow Field ◽  
Particle Deposition ◽  
Flow Distribution ◽  
Axial Direction ◽  
Correction Method ◽  
Accurate Solution ◽  
Two Dimensional ◽  
Transient Model ◽  
One Dimensional ◽  
Dimensional Flow

This study aims to develop a simple and quick, but sufficiently accurate solution method for calculating the air flow and tracking the particles in a complex tubular system, where the flow changes its magnitude and direction in a periodic manner. The flow field is assumed to be quasi-two-dimensional and a pressure-correction method is employed to calculate the spetio-temporal variation of the air velocity inside the larynx. Then, the calculated one-dimensional flow distribution is used to reconstruct a two-dimensional flow field is constructed based on the average velocity along the axial direction. The system geometry is taken as close as possible to the actual larynx for an average person with an average glottis opening. For the current study the walls of the larynx is approximated as rigid walls, but different ways to account for compliant walls are proposed within the context of the one-dimensional mode. The 1-D transient model is validated against a two-dimensional model using a verified commercial code. Particles are introduced into the system and tracked during every time fraction of the respiratory cycle. Then, the histograms of particles that come into contact with the larynx are calculated, and regions with a higher probability for particle deposition are identified.

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