Validation of a Multi-physics Simulation Approach for Insertion Electromagnetic Flowmeter Design Applications

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Linearity and strength characteristics of the voltage signal of an insertion electromagnetic flowmeter are fundamental factors in the design process that determines accuracy and quality of the product. In an effort to design and optimize insertion electromagnetic flowmeters for industrial and commercial applications, a combination of simulation packages and experimental data have been utilized in order to validate a multi-physics modeling approach. This numerical model is based on the Magneto-Hydro-Dynamics (MHD) theory that involves the interaction on a magnet field with a moving fluid creating an electric current. The multi-physics model joins the magnetic field, electric field and the velocity field in order to predict a voltage generated as the signal output of an insertion electromagnetic flowmeter. A finite element method and finite volume approach were implemented to simulate the magnetic and electric field, and velocity field respectively. The resultant magnetic and electric field, simulated using MagNet and ElecNet, were mapped into STAR-CCM+® in order to simulate the performance of an insertion electromagnetic flowmeter design. Results were compared with experimental data validating this numerical simulation approach for design and optimization applications.

Author Company: 
Dwyer Instruments
Author Name: 
Alejandro Guada