scholarly journals Influence of the Numerical Dispersion Effects in the Modelling of Ultrasonic Measurements

2015 ◽  
Vol 70 ◽  
pp. 532-536 ◽  
Author(s):  
J. Prikšaitis ◽  
L. Mažeika ◽  
R. Barauskas ◽  
E. Žukauskas ◽  
A. Kriščiūnas
Keyword(s):  
Numerical Dispersion ◽  
Dispersion Effects ◽  
Ultrasonic Measurements

About features of ultrasonic measurements in coal samples using shear elastic waves

2020 ◽  
Vol 4 ◽  
pp. 117-126
Author(s):  
V.L. Skuratnik ◽  
◽  
P.V. Nikolenko ◽  
P.S. Anufrenkova ◽  
◽  
...  
Keyword(s):  
Elastic Waves ◽  
Ultrasonic Measurements

The Use of Ultrasonic Measurements on Subcutaneous Fat Thickness in Breeding of Japanese Shorthorn Cattle

1988 ◽  
Vol 59 (4) ◽  
pp. 335-343
Author(s):  
Yoshitaka NAGAMINE ◽  
Takashi HAYASHI ◽  
Hiroshi SATO ◽  
Akira NISHIDA ◽  
Shigeki KOMATSU
Keyword(s):  
Subcutaneous Fat ◽  
Ultrasonic Measurements ◽  
Subcutaneous Fat Thickness ◽  
Fat Thickness

scholarly journals Novel finite point approach for solving time-fractional convection-dominated diffusion equations

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Xiaomin Liu ◽  
Muhammad Abbas ◽  
Honghong Yang ◽  
Xinqiang Qin ◽  
Tahir Nazir
Keyword(s):  
Variable Coefficients ◽  
Numerical Dispersion ◽  
Discrete Equation ◽  
Finite Point ◽  
Spatial Direction ◽  
Convection Diffusion ◽  
Convection Diffusion Equation ◽  
Tailored Finite Point Method ◽  
L1 Approximation ◽  
The Stability

AbstractIn this paper, a stabilized numerical method with high accuracy is proposed to solve time-fractional singularly perturbed convection-diffusion equation with variable coefficients. The tailored finite point method (TFPM) is adopted to discrete equation in the spatial direction, while the time direction is discreted by the G-L approximation and the L1 approximation. It can effectively eliminate non-physical oscillation or excessive numerical dispersion caused by convection dominant. The stability of the scheme is verified by theoretical analysis. Finally, one-dimensional and two-dimensional numerical examples are presented to verify the efficiency of the method.

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