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Flow Simulation to Assess Effects of Various Parameters on Performance of a Gas Ultrasonic Flowmeter
, M.Sc. Thesis Sharif University of Technology ; Mazaheri, Karim (Supervisor)
Abstract
In this thesis we are going to improve an ultrasonic flowmeter accuracy by considering the influence of different parameters like temperature, pressure, etc. Firstl of all different cases of flow condition in which ultrasonic flowmeter may work are specified, then velocity and temperature profile of pipe flow are determined using Fluent software. In thr next step ultrasonic pulses transmitted are simulated by the use of code written in Matlab to find wave travel time in the flow. Evetually an accurate relation of calibration for flowmeter is determined by the use of travel time and all other flow properties to evaluate the accuracy of flowmeter in diffent cases. Relation extracted can be...
Numerical Study and Sensitivity Analysis of a Flowmeter Based on a Fluidic Oscillator
, M.Sc. Thesis Sharif University of Technology ; Ebrahimi, Abbas (Supervisor) ; Ghamkhar, Kamran (Co-Supervisor)
Abstract
In this thesis, the flow behavior in a fluidic oscillator-based flowmeter is investigated using two-dimensional numerical simulations and experimental tests. The primary objective of this study is to analyze the effect of geometrical parameters and flow conditions on the performance of the fluidic oscillator and to determine the relationships between key parameters such as oscillation frequency, oscillation amplitude, pressure drop, and the standard deviation of the Strouhal number. The numerical simulations are conducted using the Unsteady Reynolds-Averaged Navier-Stokes (URANS) model and the finite volume method, with the k−ω SST turbulence model applied for flow modeling. The computations...