Numerična simulacija pnevmatskega transporta premogovega prahu

Sečen, Jaka (author), Senegačnik, Andrej (mentor)

V magistrskem delu je obravnavana numerična simulacija laboratorijskega preizkuševališča elektrostatične merilne metode z vrinjeno palično sondo pri pnevmatskem transportu trdnih delcev. Opisan je celotni numerični preizkus: izdelava geometrijskega modela in računske mreže, izbira fizikalnih modelov ter določitev robnih pogojev numerične simulacije. Za računalniško simulacijo je bilo uporabljeno programsko orodje Ansys Fluent. Simulirani so bili realni preizkusi, izvedeni na preizkuševališču s premogovim prahom. Z analizo rezultatov so bili ugotovljeni vplivni parametri numeričnega modela. V zaključnem delu je izveden multiregresijski model za izračun napetosti na elektrostatični sondi z rezultati numerične simulacije, tj. hitrosti delcev in števila trkov.

• Language: Slovenian
• Keywords: pnevmatski transport premogovega prahu, dvofazni tok, numerični model, programsko okolje Ansys Fluent, elektrostatična sonda, elektrostatični naboj, multiregresija
• Work type: Master's thesis/paper
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2018
• PID: 20.500.12556/RUL-101433
• Publication date in RUL: 02.06.2018

SEČEN, Jaka, 2018, Numerična simulacija pnevmatskega transporta premogovega prahu [online]. Master’s thesis. [Accessed 26 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=101433

Secondary language

• Language: English
• Title: Numerical simulation of pneumatic transport of pulverized coal

Abstract

This master thesis deals with numerical simulation of laboratory measuring station employing electrostatic measuring method with inserted rod probe and pneumatic conveying of solid particles. It describes the whole numerical experiment: creation of geometrical model and mesh, selection of appropriate physical models and defining boundary conditions for numerical simulations. Ansys Fluent was used as the numerical tool. Actual experiments done on mentioned measuring station with pulverized coal were simulated. With the analysis of results key parameters of numerical model were determined. In the final part mutiregression model is set for computing voltages on electrostatic probe with the results of numerical simulations i.e. velocity of particles and number of collisions.

• Keywords: simulation of pneumatic transport of pulverized coal, two-phase flow, numerical model, software tool Ansys Fluent, electrostatic probe, electrostatic charge, multiregression