Showing papers in "Flow Measurement and Instrumentation in 2014"

TL;DR: In this article, the authors provide an updated review of Coriolis flow measurement technology over the past 20 years, focusing on interesting theoretical and experimental studies and innovative industrial developments and applications.

TL;DR: In this paper, the average transport velocity for ceramic models representing natural polymetallic nodules was determined using the cross correlation function (CCF) and its modifications consisting in the combination of the CCF with such procedures as the average square difference function (ASDF) and the average magnitude difference functions (AMDF) were used.

TL;DR: In this article, the effect of the spatial distribution of phases on the response of the sensor when measuring the volumetric concentration of two-phase air-water flows was investigated.

TL;DR: Comparison of the results showed that both neural networks and PSO based equations could determine discharge coefficient of modified triangular side weirs with high accuracy and were sufficient for use in practical cases.

TL;DR: In this paper, the authors review the bubble theory which describes errors due to phase decoupling of two-phase fluids and provide examples of combined phase coupling and compressibility errors.

TL;DR: In this article, the Flysch Carpathian formation was modeled as a result of the suspension stream and measurements of slurry flow rate using gamma-ray absorption and ultrasonic methods.

TL;DR: In this article, a noise auto-correlation (NAC) and proper orthogonal decomposition (POD) approach is used to identify and attenuate the noise in the velocity spectra.

TL;DR: In this paper, an array of three identical arc-shaped electrostatic electrodes is housed in a sensing head to derive particle flow signals, such as velocity, mass flow rate and fuel distribution among the injection pipes from the same pulverizing mill.

TL;DR: In this article, a comprehensive study was performed to examine the flow characteristics over rectangular sharp-crested side weirs based on the traditional weir equation, and a sensitivity analysis was carried out based upon an artificial neural network modeling.

TL;DR: In this paper, an improved Landweber iteration algorithm was proposed for 3D reconstruction of objects in the shape of letters U and L. This algorithm is tested by the noise-free and noise-contaminated capacitance data.

TL;DR: In this article, a new method for measuring the individual mass flowrate of gas-liquid two-phase flow of low liquid loading was proposed based on the combination of ultrasonic and Coriolis flowmeters.

TL;DR: In this paper, a variable area cavitating venturi is designed and four different sets of experiments are conducted to investigate the performance of the variable area cavity venturi, which is an effective means to throttle the mass flow rate of liquid.

TL;DR: In this paper, the authors examined a method proposed by Dominguez for estimating the discharge over the side weirs under a subcritical flow condition, and the results reveal that the fundamental assumptions of Domenique's method, e.g., constant specific energy and linear free surface profile along the main channel centerline, are appropriately satisfied.

TL;DR: In this article, the RNG k-e turbulence model is used for simulating the turbulence of the flow field and free surface changes are modeled using VOF model in a circular channel with side weir.

TL;DR: In this paper, the authors present the results of a wide experimental study aimed to assess how metrological performance of diaphragm gas meters worsen over time as function of age, installation conditions, manufacturing technology, etc.

TL;DR: In this article, a study on perforated thick diaphragms for pressure sensing in piezoresistive MEMS pressure sensors for clinical ventilator system is presented.

TL;DR: In this paper, the behaviour of Coriolis mass flowmeters (CMFs) with arbitrary pipe geometry is investigated regarding the effects of unsteady flow, geometry and damping.

TL;DR: In this paper, an approach toward an enhancement of the measuring range of high-speed sensors for the measurement of liquid film thickness distributions based on electrical conductance is presented, which allows an extension of the film thickness range by combining electrode matrices of different resolutions in one and the same sensor.

TL;DR: In this article, the performance of a modified version of a close coupled slotted orifice plate and swirl flow meter for multiphase flow was evaluated to provide further development of a new type of multi-phase flow meter.

TL;DR: A dual-mode tomography system based on capacitance sensor and gamma sensor was developed to capture oil–gas two-phase flow and two fusion methods, namely image fusion method and data fusion method, are proposed.

TL;DR: In this paper, analytical relationships for the discharge through a side lateral orifice are developed accounting for the pressure distribution over the area of the orifice, and the computed discharges using the proposed relationship are within ±5% of the observed values; however percentage error is more in case the discharge is computed using earlier equations.

TL;DR: There is an appropriate N pulse for each algorithm that depends on the SNR; specifically, the value of N pulse increases with decreasing SNR, and a WT is the preferred choice for measuring velocity distributions if high sampling measurement is not required.

TL;DR: Experimental results show that the ANFIS based on the hybrid learning rule outperforms the systembased on the gradient descent learning rule and that the fiducial error for biomass and pulverized coal flows are 1.2% and 0.7%, respectively.

TL;DR: In this article, the effect of upstream face slope of a trapezoidal broad-crested weir on discharge coefficient and water surface profile was investigated using the laboratory models.

TL;DR: In this paper, the quantitative influence of external vibrations on the measurement value of a Coriolis Mass-Flow Meter for low flows is investigated, with the eventual goal to reduce the influence of vibrations.

TL;DR: In this article, a new method is proposed to simultaneously estimate three parameters in horizontal well logging with oil-water two-phase stratified flow by using a conductance-probe array.

TL;DR: In this paper, a series of numerical simulations were conducted to research discharge coefficients of 6 critical flow Venturi nozzles with throat diameter ranging from 0.5 to 100mm when Reynolds numbers ranges from 104 to 109 and relative roughness from 10−2 to 10−6.

TL;DR: In this paper, a flow standard for gas flows in the range from 0.01 to 100 sccm with a relative standard uncertainty (68% confidence) of 0.03% was presented.

TL;DR: In this article, the authors derived a system equation for the 4 and 16 sensor systems based on the Cartesian coordinate system, the elements' technique of the finite-element method, Gauss's and Coulomb's theories.

TL;DR: In this article, an instrumentation system based on acoustic emission (AE) method is developed to determine the size distribution of pneumatically conveyed fuel particles on an online continuous basis, which extracts information about particle size distribution from the impulsive AE signals generated by the impacts of particles with a metallic waveguide introduced into the particle flow.