RBF method for solving Navier-Stokes equations
2023 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE credits
Student thesis
Abstract [en]
This thesis explores the application of Radial Basis Functions (RBFs) to fluid dynamical problems. In particular, stationary Stokes and Navier-Stokes equations are solved using RBF collocation method. An existing approach from the literature, is enchanced by an additional polynomial basis and a new preconditioner. A faster method based on the partition of unity is introduced for stationary Stokes equations. Finally, a global method based on Picard linearization is introduced for stationary Navier-Stokes equations.
Abstract [sv]
Denna avhandling utforskar tillämpningen av Radial Basis Functions (RBF) på dynamiska problem med vätskor. I synnerhet löses stationära Stokes och Navier-Stokes ekvationer lösas med hjälp av RBF-samlokaliseringsmetoden. En befintlig metod från litteraturen, förbättras genom en ytterligare polynombas och en ny förkonditionering. En snabbare metod baserad på enhetens partition introduceras för stationära Stokes-ekvationer. Slutligen introduceras en global metod baserad på Picard linjärisering för stationära Navier-Stokes ekvationer.
Place, publisher, year, edition, pages
2023. , p. 71
Series
TRITA-SCI-GRU ; 2023:464
Keywords [en]
Radial Basis Functions, Navier-Stokes equations, Meshless methods
Keywords [sv]
Radiala Basfunktioner, Navier-Stokes ekvationer, Meshlösa metoder
National Category
Other Mathematics
Identifiers
URN: urn:nbn:se:kth:diva-345175OAI: oai:DiVA.org:kth-345175DiVA, id: diva2:1849751
Subject / course
Scientific Computing
Educational program
Master of Science - Computer Simulation for Science and Engineering
Supervisors
Examiners
2024-04-092024-04-082024-04-09Bibliographically approved