搜索结果: 1-14 共查到“waves”相关记录14条 . 查询时间(0.166 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Recent progress on steady Prandtl equation and Tollmien-Schlichting waves
稳定 Prandtl方程 Tollmien-Schlichting波
2023/11/9
The Prandtl equation introduced by Prandtl in 1904 is a basic equation describling the behavior of the fluid near the boundary at high Reynolds number regime. In this talk, I will first introduce some...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Stability of degree-2 Rossby-Haurwitz waves
2度 罗斯比-豪维茨波 稳定性
2023/5/12
Rossby-Haurwitz waves are an important class of explicit solutions to the incompressible Euler equation on a rotating 2-sphere. We will introduce our recent work on the nonlinear stability of degree-2...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Long-time behavior of Alfven waves in a flowing plasma
阿尔文波 流动 等离子体 长期行为
2023/4/28
In this talk, we consider the long-time behavior of the linearized MHD equations around a steady flowing plasma. We confirm the following physical phenomenon: there will be a generation of a magnetic ...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Mathematics for web-like patterns of solitary in waves in shallow water
浅水波浪 孤单 网状模式
2023/4/13
I will give a review of the KP solitons based on Grassmannians. In the talk, I will also give several physical applications of KP solitons to shallow water wave phenomena, and discuss some initial val...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：On the stability of multi-dimensional rarefaction waves
多维 稀薄波 稳定性
2023/4/17
In his pioneering work in 1860, Riemann proposed the Riemann problem and solved it for isentropic gas in terms of shocks and rarefaction waves. It eventually became the foundation of the theory of one...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Energy estimates for the two-dimensional acoustical rarefaction waves
二维声稀波 能量估计 无旋
2023/4/18
We study the two-dimensional acoustical rarefaction waves under the irrotational assumptions. We provide a new energy estimates without loss of derivatives. We also give a detailed geometric descripti...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Global quasineutral Euler limit for the Vlasov-Poisson-Landau system with rarefaction waves
稀薄波 弗拉索夫-泊松-朗道系统 准中性 欧拉极限
2023/4/24
The formal limit of the one-dimensional Vlasov-Poisson-Landau (VPL) system in the combined small Knudsen and quasineutral regimes gives the compressible Euler system. In the talk I will present a rece...
Engineers use artificial intelligence to capture the complexity of breaking waves（图）
人工智能 破浪 复杂性 模型预测 海洋气候模拟
2023/6/19
Waves break once they swell to a critical height, before cresting and crashing into a spray of droplets and bubbles. These waves can be as large as a surfer’s point break and as small as a gentle ripp...
Research scientist Alex Tinguely is readjusting to Cambridge and Boston.
The National Science Foundation (NSF) has renewed a Physics Frontiers Center grant to the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) consortium, giving Cornell astronomy r...
May 29, 2007，Sound waves escaping the sun’s interior create fountains of hot gas that shape and power a thin region of the sun’s atmosphere which appears as a ruby red "ring of fire" around the moon d...
18 May 2007，Ever jammed a sword up your nose? Not something to try at home, folks, but accidents do happen. Dr Matt Jones, an RCUK Academic Fellow in the Department of Physiology, tells us what happen...
Southampton relativity researchers awarded £1.7m grant to model Einstein’s elusive waves
theory of relativity gravitational waves astronomy
2007/5/18
16 May 2007，The General Relativity group of the University of Southampton’s School of Mathematics has been awarded a rolling grant worth £1.7m by the Science and Technology Facilities Council.
Waves and Particles: Musings after the National Science Teachers Convention
Astronomy cosmic rays
2007/4/11
04.05.07,it was staffing one of the walk-by tables in a gizmos and gadgets 揝hare-a-thon?session last week at the National Science Teachers Association (NSTA)抯 annual convention in St. Louis. My demo...