ncku-talk2009-03-26

NCKU Math colloquium

DATE 2009-03-26　15:30-17:00

PLACE 國家理論科學中心 204 室

SPEAKER 郭鴻基教授（台灣大學大氣科學系）

TITLE Two Dimensional Turbulence, Typhoon Dynamics and Scientific computing

ABSTRACT For many years, two-dimensional turbulence has been a paradigm for geophysical fluid dynamics. It is a striking fact that for any type of random initial state or external forcing, a two-dimensional fluid will rapidly organize itself into a system of coherent, interacting vortices swimming through a sea of passive filamentary structure produced from earlier vortex interactions.This discipline has also been instrumental in the development of single charge plasma physics, galaxy spiral, the Great Red spot, the ozone hole problem and the typhoon dynamics. A review of implication of 2D and 3D turbulence will be given.
The dynamics of the selective decay and the applications in the large scale dynamics and typhoon dynamics will be emphasized. The essence of the scientific computing in 2-D turbulence will be discussed. An efficient domain decomposed Chebyshev spectral method will be presented.

NCKU Math colloquium

DATE	2009-03-26　15:30-17:00

PLACE	國家理論科學中心 204 室

SPEAKER	郭鴻基教授（台灣大學大氣科學系）

TITLE	Two Dimensional Turbulence, Typhoon Dynamics and Scientific computing

ABSTRACT	For many years, two-dimensional turbulence has been a paradigm for geophysical fluid dynamics. It is a striking fact that for any type of random initial state or external forcing, a two-dimensional fluid will rapidly organize itself into a system of coherent, interacting vortices swimming through a sea of passive filamentary structure produced from earlier vortex interactions.This discipline has also been instrumental in the development of single charge plasma physics, galaxy spiral, the Great Red spot, the ozone hole problem and the typhoon dynamics. A review of implication of 2D and 3D turbulence will be given. The dynamics of the selective decay and the applications in the large scale dynamics and typhoon dynamics will be emphasized. The essence of the scientific computing in 2-D turbulence will be discussed. An efficient domain decomposed Chebyshev spectral method will be presented.