講座主題：2D vorticity-stream function formulation and its application in vortex merging
專家姓名：張磊
工作單位：黑龍江大學(xué)
講座時(shí)間：2021年11月23日 14:00-15:00
講座地點(diǎn)：騰訊會(huì)議：209237945
主辦單位：煙臺(tái)大學(xué)數(shù)學(xué)與信息科學(xué)學(xué)院
內(nèi)容摘要：
We are concerned with the development of numerical research for the 2D vorticity-stream function formulation and its application in vortex merging at high Reynolds numbers. A novel numerical method for solving the vorticity-stream function formulation of the Navier-Stokes equations at high Reynolds number is presented. A verification algorithm that has the analytical solution is designed to demonstrate the feasibility and effectiveness of the proposed scheme. Furthermore, the proposed scheme is applied to study the vortex merging problem. Ample numerical experiments are performed to show some essential features of the merging of multiple vortices at high Reynolds numbers. Meanwhile, considering the importance of the inversion for the initial position of the vorticity field, we present an iteration algorithm for the reconstruction of the initial position parameters.
主講人介紹：
現(xiàn)任黑龍江大學(xué)教授、碩導(dǎo)，黑龍江省數(shù)學(xué)會(huì)理事、黑龍江省工業(yè)與應(yīng)用數(shù)學(xué)會(huì)理事。2013年畢業(yè)于吉林大學(xué)數(shù)學(xué)研究所，獲得理學(xué)博士學(xué)位。隨后在浙江大學(xué)數(shù)學(xué)系從事博士后研究工作。2018年在美國普渡大學(xué)做訪問學(xué)者一年。研究方向?yàn)閿?shù)學(xué)物理反問題。先后主持國家自然科學(xué)基金面上、青年項(xiàng)目等。在Inverse Problems (high light article)、Journal of Computational Physics、SIAM Journal on Imaging Sciences等學(xué)術(shù)期刊上發(fā)表學(xué)術(shù)論文二十余篇。
