The Ohio State University Computational Math Seminar

Thursday at 1:50-2:45 PM (unless otherwise noted)

Hybrid format: either virtually or in Math Tower Room 154 (See below for details)

For questions, contact Dr. Yulong Xing or Dr. Dongbin Xiu, Email: xing dot 205@osu.edu or xiu dot 16@osu.edu



Year 2022-2023 Schedule

DATE and TIME  Location  SPEAKER  TITLE 
September 15 
Thursday, 1:50pm 
In person 
Math Tower 154
Wenlong Pei 
(OSU) 
The Search for Time Accuracy: A Variable Time-stepping Algorithm for Computational Fluid Dynamics 
October 6 
Thursday, 1:50pm 
In person 
Math Tower 154
Yue Yu 
(Lehigh) 
TBA 
October 20 
Thursday, 1:50pm 
In person 
Math Tower 154
Michael Saunders 
(Stanford Univ.) 
TBA 
November 3 
Thursday, 1:50pm 
In person 
Math Tower 154
Di Fang 
(UC Berkeley) 
TBA 
November 10 
Thursday, 1:50pm 
In person 
Math Tower 154
Qing Nie 
(UCI) 
TBA 
November 17 
Thursday, 1:50pm 
In person 
Math Tower 154
Jesse Chan 
(Rice Univ.) 
TBA 
December 1 
Thursday, 1:50pm 
In person 
Math Tower 154
Maria Han Veiga 
(Univ. Michigan) 
TBA 



Abstracts:

September 15
Wenlong Pei
Title: The Search for Time Accuracy: A Variable Time-stepping Algorithm for Computational Fluid Dynamics

Dahlquist, Liniger, and Nevanlinna proposed a two-step time-stepping scheme for systems of ordinary differential equations (ODEs) in 1983. The little-explored variable time-stepping scheme has advantages in numerical simulations for its fine properties such as unconditional G-stability and second-order accuracy. We simplify its implementation through time filters (pre-filter and post-filter) on a certain first-order implicit method. The adaptivity algorithm for this variable time-stepping scheme, highly reducing computation cost as well as keeping time accuracy, has been applied to systems of ODEs and flow models. Moreover we have applied this method to Navier Stokes equations for stability and error analysis.

October 6
Yue Yu
Title:

October 20
Michael Saunders
Title:

November 3
Di Fang
Title:

November 10
Qing Nie
Title:

November 17
Jesse Chan
Title:

December 1
Maria Han Veiga
Title:


Year 2021-2022 Seminar

Year 2019-2020 Seminar


Does this page seem familiar?