MR suspensiju reoloģisko īpašību modelēšana
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Latvijas Universitāte
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Abstract
Darbā izveidots vienkāršots matemātiskais mikromodelis magnetoreoloģisko (MR) suspensiju uzvedības aprakstam ārējā magnētiskā laukā pie uzdotas plūsmas, kurā suspensija tiek aprakstīta ar nesējšķirdumā suspendētu feromagnētisku lodīšu ansambli. Matemātiskajam modelim izstrādāti nepieciešamie algoritmi, kas realizēti datorprogrammā. Veikti modeļa testi. Iegūtie rezultāti parāda daļiņu klāsteru veidošanās mehānismus, kas kvalitatīvi labi atbilst eksperimentāliem rezultātiem citu autoru darbos kā arī palīdz izprast suspensiju makroīpašības.
The thesis presents a simplified mathematical model for micro-level simulations of behavior of magneto-rheological (MR) suspensions in external magnetic field. The suspension is described as an ensemble of ferromagnetic spheres suspended in fluid. Corresponding algorithms are elaborated and realized in computer code. Model has been tested. Obtained results display mechanisms of particle cluster formation, which qualitatively correspond well to experimental results obtained by other researchers. These results allow to form basic understanding about macroscopic behavior of suspensions.
The thesis presents a simplified mathematical model for micro-level simulations of behavior of magneto-rheological (MR) suspensions in external magnetic field. The suspension is described as an ensemble of ferromagnetic spheres suspended in fluid. Corresponding algorithms are elaborated and realized in computer code. Model has been tested. Obtained results display mechanisms of particle cluster formation, which qualitatively correspond well to experimental results obtained by other researchers. These results allow to form basic understanding about macroscopic behavior of suspensions.