報告題目:Quadratic-auxiliary variable Runge-Kutta method for the Camassa-Holm equation
主講人:王雨順教授(南京師范大學(xué))
時間:2023年10月14日(周六)10:00 a.m.
地點:北院卓遠樓305會議室
主辦單位:統(tǒng)計與數(shù)學(xué)學(xué)院
摘要:In this talk, we take the Camassa-Holm equation as an example to propose a novel class of Runge-Kutta methods for conservative systems, which is named quadratic auxiliary variable Runge-Kutta (QAVRK) methods. The resulting methods are shown to inherit the relationship between the auxiliary variable and the original one, and thus can be simplified by eliminating the auxiliary variable, which leads to a new class of QAVRK schemes. Furthermore, the QAVRK methods are proved rigorously to preserve the original energy conservation law. Numerical examples are presented to confirm the expected order of accuracy, conservative property and efficiency of the proposed schemes. This numerical strategy makes it possible to directly apply the SRK methods to develop energy-preserving algorithms for general conservation systems with any polynomial energy.
主講人簡介:
王雨順,南京師范大學(xué)教授,、博導(dǎo),。長期從事保結(jié)構(gòu)算法及其應(yīng)用研究,主持完成6項國家基金委項目,同時作為主要成員參加科技部“863”課題,、“973”項目,、“863”計劃、 基金委重點項目,,以第一完成人獲得教育部自然科學(xué)獎二等獎,,入選江蘇省“333”工程、 青藍工程學(xué)術(shù)帶頭人,、江蘇省“六大人才高峰”高層次人才,;江蘇省創(chuàng)新團隊主持人;獲得江蘇省科技進步獎,,江蘇省數(shù)學(xué)成就獎,。專著《偏微分方程保結(jié)構(gòu)算法》獲得第三屆中國政府出版獎-圖書獎。現(xiàn)任期刊International Journal of Computer Mathematics,、《計算數(shù)學(xué)》編委,。江蘇省數(shù)學(xué)學(xué)會計算數(shù)學(xué)分理事長。