چكيده به لاتين
Today, the use of ultrasonic flowmeters has expanded greatly due to the use of new technology in various industries. This type of flowmeter uses the transmitter and receiver piezoelectric converters to generate ultrasonic waves by generating ultrasonic waves inside the fluid path and using the speed of sound inside the fluid. Due to the use of this technique, this type of moving part flow meter has no effect on flow. Multi-year flow meters have long been used to measure water flow in domestic use. This type of flowmeter has many problems and errors in measurement due to the use of mechanical disconnection, and more importantly, it has a higher measurement start for Dubai. Because so far the ultrasonic water meter has not been used mainly at home. In this study, it is planned to use the available knowledge to design ultrasonic flowmeters that remove the limitations of using flowmeters in lower diameters. In this numerical simulation of this study, the hydrodynamic analysis of geometries and the acoustic analysis of the flowmeter are performed during the static current flow. In acoustic analysis, various couplings and techniques have been used to optimize the calculations, including indirect one-way coupling of the FEM solution method to simulate piezoelectric converters with DG solution method for wave propagation. In addition, in order to optimize and reduce the computation time, the three-dimensional solution of turbulent flow solution and converters with two-dimensional solution of wave transfer have been used as a unique method. The results of this study include the acquisition of knowledge related to design and optimization of water ultrasonic flowmeter, numerical simulation of flow profile and the impact of various design parameters on it, numerical acoustic analysis of final geometry using optimal converters to evaluate converters in different operating conditions. To ensure the ideal performance of the converters, the numerical simulation of the flowmeter in flow mode to check the accuracy of the flowmeter and finally the construction of the ultrasonic flowmeter sample for experimental studies was mentioned.
