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ADVANCED LIQUID SIMULATION TECHNIQUES
FOR COMPUTER GRAPHICS APPLICATIONS
by
Youngmin Kwak
A Dissertation Presented to the
FACULTY OF THE USC GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Ful llment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(ELECTRICAL ENGINEERING)
August 2010
Copyright 2010 Youngmin Kwak
Object Description
| Title | Advanced liquid simulation techniques for computer graphics applications |
| Author | Kwak, Youngmin |
| Author email | youngmik@usc.edu; mineeek@gmail.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Electrical Engineering (Multimedia & Creative Technology) |
| School | Viterbi School of Engineering |
| Date defended/completed | 2010-03-23 |
| Date submitted | 2010 |
| Restricted until | Unrestricted |
| Date published | 2010-08-05 |
| Advisor (committee chair) | Kuo, C.-C. J. |
| Advisor (committee member) |
Mendel, Jerry M. Nakano, Aiichiro |
| Abstract |
The particle level set method (PLSM) and the lattice Boltzmann method (LBM) have been two major physics-based liquid simulation techniques used in computer graphics to generate splendid and dynamic visual effects. The PLSM suffers from a high computational cost which arises from the global pressure correction step whereas the LBM requires a large memory size to store distribution functions.; In this research, we propose a hybrid lattice Boltzmann method (HLBM), which integrates the PLSM and the LBM, to visualize realistic liquid motion with emphasis on the behavior of the liquid-gas interface. The HLBM first runs the LBM solver, computes macroscopic velocities, and extrapolates the velocity field to the gas region. Subsequently, the level set function and particles are advected by the extrapolated velocity field, and advected particles are used to correct errors in the level set function based on the PLSM. Finally, the density difference between the LBM and the PLSM solvers is added to distribution functions to correct errors of the LBM. Simulation results show that the HLBM improves the quality of the fluid simulation without increasing the number of grids. As compared with the simulation using the LBM with 50 |
| Keyword | fluid simulation; hybrid lattice Boltzmann method; lattice Boltzmann method; multicomponent multiphase lattice Boltzmann method; particle level set method |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m3278 |
| Rights | Kwak, Youngmin |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | http://www.usc.edu/isd/libraries/services/ask_a_librarian/email/ |
| Filename | etd-Kwak-3718 |
| Archival file | uscthesesreloadpub_Volume32/etd-Kwak-3718.pdf |
Description
| Title | Page 1 |
| Full text | ADVANCED LIQUID SIMULATION TECHNIQUES FOR COMPUTER GRAPHICS APPLICATIONS by Youngmin Kwak A Dissertation Presented to the FACULTY OF THE USC GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Ful llment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (ELECTRICAL ENGINEERING) August 2010 Copyright 2010 Youngmin Kwak |
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