Nonlinear characteristics analysis of sodium flow measurement based on the principle of turbulent fluctuation

2020 ◽  
Vol 368 ◽  
pp. 110834
Author(s):  
Xin-Long Yu ◽  
Ke-Jun Xu ◽  
Wen-Kai Wu ◽  
Xiao-Xue Yan ◽  
Ya Huang
Keyword(s):  
Flow Measurement ◽  
Turbulent Fluctuation ◽  
Nonlinear Characteristics ◽  
Characteristics Analysis

scholarly journals The implementation of optimized neural network to improve the accuracy of flow measurement by ultrasonic flowmeter

2019 ◽  
pp. 193-194
Author(s):  
Oleksandr Ihorovich Parfeniuk ◽  
Oleksandr Mykolaiovych Naumchuk ◽  
Olena Olehivna Poliukhovych ◽  
Pawel Mazurek
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Flow Measurement ◽  
Ultrasonic Flowmeter ◽  
Structural Scheme ◽  
Nonlinear Characteristics ◽  
The Neural Network ◽  
Artificial Neural

It is proposed the technology of intellectual measurement of expenses with the use of an artificial neural network for overcoming the constraints caused by nonlinear characteristics of ultrasonic flowmeters. It is presented structural scheme of the proposed technology and structure of the model of the neural network

scholarly journals Nonlinear Characteristics Analysis of Eccentric Rotor System Based on FEM

2020 ◽  
pp. 235-244
Author(s):  
Choluk Ri ◽  
Chunghyok Chae ◽  
Kwanggyun Sin ◽  
Yongil Sin ◽  
Kwangil Ri ◽  
...  
Keyword(s):  
Mathematical Modeling ◽  
Nonlinear Dynamics ◽  
Rotor Dynamics ◽  
Rotor System ◽  
Ansys Software ◽  
Nonlinear Characteristics ◽  
Double Support ◽  
Eccentric Rotor ◽  
Characteristics Analysis ◽  
The Relationship

In this paper, based on the theory of rotor dynamics, the nonlinear dynamics of a rotor system with an eccentric rotor is analyzed. Taking the double-support rotor system with a single turntable as the object, the mathematical modeling method of the rotor system with an eccentric rotor and the rotation analysis of the turntable are analyzed in detail. According to ANSYS software, the influence of eccentricity on the rotor system and the relationship between eccentricity and nonlinearity are analyzed.

scholarly journals Sparse Fourier transform and amplitude–frequency characteristics analysis of vortex street signal

2020 ◽  
pp. 002029402091987 ◽  
Author(s):  
Jie Chen ◽  
Yun Cao ◽  
Chengyi Wang ◽  
Bin Li
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Flow Measurement ◽  
Noise Signal ◽  
Frequency Characteristics ◽  
Vortex Street ◽  
Signal Frequency ◽  
Signal Spectrum ◽  
Vortex Flowmeter ◽  
Characteristics Analysis

Vortex flowmeter is a commonly used flow measurement device. It is almost not affected by the density and viscosity of the fluid, so the vortex flowmeter can be used for the detection of various medium, such as gas, liquid and steam. When dealing with vortex street signal, we usually use fast Fourier transform to calculate the signal frequency, but this traditional vortex street signal processing method is not only inefficient, but also difficult to filter out noise signals in the same frequency band as the vortex signal. The sparse Fourier transform utilizes the sparsity of the signal to efficiently calculate the signal spectrum, and the computational complexity is lower than that of the fast Fourier transform algorithm. In this paper, the amplitude and frequency of the vortex signal is analyzed by sparse Fourier transform and the noise signal is removed based on the amplitude–frequency characteristics of the vortex signal. Finally, by comparing with the other methods, we found that the time complexity of our algorithm is one-tenth of others’ methods. This means that our approach is 10 times faster than others.

Blast furnace tapping flow measurement

1991 ◽  
Vol 88 (9) ◽  
pp. 905-911
Author(s):  
C.A.A. Jonker ◽  
J. Vermeij
Keyword(s):  
Blast Furnace ◽  
Flow Measurement
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