diplomsko delo
Žan Ogorevc (Author), Matjaž Ramšak (Mentor)

Abstract

V diplomskem delu sem predstavil validacijo numeričnih orodij na primeru aerodinamike poenostavljenega vozila. Primerjal sem tri programe za računalniško dinamiko tekočin: Ansys CFX, Simscale in DualSPHysics. Na začetku na kratko predstavim osnovno problematiko aerodinamike vozil in zapišem nekaj osnovnih principov o numeričnih metodah. Nato opišem geometrijo, robne pogoje in nastavitve simulacij v vseh treh programih. Rezultate sem primerjal z eksperimentalnimi rezultati iz članka »Some Salient Features of the Time - Averaged Ground Vehicle Wake«. Analiziral sem natančnost rezultatov v odvisnosti od gostote računskih mrež. Glavni parameter po katerih sem ovrednotil rezultate je bil koeficient upora, poleg tega sem opazoval še hitrostna in tlačna polja.

Keywords

validacija;računalniška dinamika tekočin;aerodinamika;koeficient upora;diplomske naloge;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UM FS - Faculty of Mechanical Engineering
Publisher: [Ž. Ogorevc]
UDC: 629.3.015.3(043.2)
COBISS: 85153283 Link will open in a new window
Views: 249
Downloads: 26
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Other data

Secondary language: English
Secondary title: Validation of Numerical Tools for Bluff Body Aerodynamics
Secondary abstract: The diploma thesis presents validation of numerical tools on the example of bluff body aerodynamics. I compared three programs for computational fluid dynamics: Ansys CFX, Simscale and DualSPHysics. At the beginning, I briefly present the basic problems of vehicle aerodynamics and discuss some basic principles about numerical methods. I then describe the geometry, boundary conditions, and simulation settings in all three programs. I compared the results with the experimental results from the article "Some Salient Features of the Time - Averaged Ground Vehicle Wake". I observed how the accuracy of the results changes with mesh refinement. The main parameter by which I evaluated the results was the drag coefficient. I also observed velocity and pressure fields.
Secondary keywords: validation;computational fluid dynamics;aerodynamics;Ahmed body;drag coefficient;
Type (COBISS): Bachelor thesis/paper
Thesis comment: Univ. v Mariboru, Fak. za strojništvo, Energetsko, procesno in okoljsko strojništvo
Pages: VIII, 38 f.
ID: 13249438