Numerična analiza transporta sipkega materiala v procesu suhe granulacije

magistrsko delo

Neven Martinčević (Author), Tone Lerher (Mentor), Matej Zadravec (Co-mentor), Miha Jaklič (Co-mentor)

Abstract

Magistrsko delo predstavlja izvedbo numeričnih simulacij sipkega materiala med procesom suhe granulacije v odprtokodnem programskem paketu LIGGGHTS-PUBLIC 3.6.0. Poudarek je na izdelavi numeričnega modela, nastavitvah, predpostavkah in uporabi primernih robnih pogojev, ki omogočajo izvedbo numerične simulacije. S pomočjo laboratorijskega eksperimenta ter numeričnih simulacij, ki temeljijo na metodi diskretnih elementov, so določene materialne lastnosti ter interakcijski parametri za mešanico prahov in ostalih materialov, ki pridejo v kontakt z prahom. Izvedeno je veliko število numeričnih simulacij procesa suhe granulacije, kjer smo spreminjali razmik med valji, število vrtljajev polža in število vrtljajev valjev. Na podlagi izmerjenih predkompakcijskih gostot, so bile pridobljene enačbe, s katerimi se lahko izračunajo relativne predkompakcijske gostote za željene obratovalne parametre naprave za suho granulacijo.

Keywords

numerična simulacija;metoda diskretnih elementov;suha granulacija;sipki material;magistrske naloge;

Data

Language:	Slovenian
Year of publishing:	2017
Typology:	2.09 - Master's Thesis
Organization:	UM FS - Faculty of Mechanical Engineering
Publisher:	[N. Martinčević]
UDC:	519.6:66.099.2(043.2)
COBISS:	21254934
Views:	910
Downloads:	159
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Numerical analysis of granular material transport in dry granulation process
Secondary abstract:	Master's Thesis presents an implementation of numerical simulations of bulk materials during the dry granulation process in the open source software package LIGGGHTS-PUBLIC 3.6.0. The emphasis is on the development of a numerical model, settings, assumptions and the use of appropriate boundary conditions, which enable the execution of numerical simulations. Using the laboratory experiment and numerical simulations, which are based on the discrete element method, the material properties and interaction parameters for a mixture of powders and other materials that are in contact with the powder were determined. A large number of numerical simulations of the dry granulation process were carried out, where we were changing the spacing between the cylinders, the number of auger revolutions and the number of cylinders revolutions. Based on the measured pre-compaction densities, equations are generated and they can be used for analytical calculations of pre-compaction densities for desired operating parameters of roller compactor.
Secondary keywords:	numerical simulation;discrete element method;dry granulation;granular material;
URN:	URN:SI:UM:
Type (COBISS):	Master's thesis/paper
Thesis comment:	Univ. v Mariboru, Fak. za strojništvo, Konstrukterstvo
Pages:	XV, 92 str.
ID:	10877324