Modeling Mesoscale Convection by Coupled Nonlinear Systems

通过耦合非线性系统模拟中尺度对流

• 批准号: 9523572
• 负责人: Alexander Gluhovsky
• 金额: $ 21.03万
• 依托单位: Purdue Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-12-01 至 1999-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9523572&HistoricalAwards=false
• 关键词: Modeling; Mesoscale; Convection; Coupled; Nonlinear

9523572 Gluhovsky The study of fundamental aspects of atmospheric systems is made difficult by the fact that these systems are nonlinear and sometimes chaotic in nature. Accordingly, numerical systems (known as low order models) that lend themselves to relatively simple mathematical solutions while still maintaining the fundamental characteristics of the atmospheric flows are valuable research tools for understanding the underlying physics. Preliminary studies by the Principal Investigators indicate that low order models of atmospheric phenomena may be presented in the form of mathematical systems known in classical mechanics as Volterra gyrostats. In this project, low order models for mesoscale cellular convection will be developed in the form of systems of coupled gyrostats. This will promote understanding of this complex phenomenon as well as the demonstrating the fundamental role that coupled gyrostats could play in the study of geophysical fluid dynamics. ***

9523572 Gluhovsky 由于大气系统的本质是非线性的，有时甚至是混沌的，因此对大气系统基本方面的研究变得困难。 因此，数值系统（称为低阶模型）能够提供相对简单的数学解决方案，同时仍然保持大气流动的基本特征，是理解基础物理的宝贵研究工具。 首席研究员的初步研究表明，大气现象的低阶模型可以以经典力学中称为 Volterra 陀螺仪的数学系统的形式呈现。 在该项目中，将以耦合陀螺仪系统的形式开发中尺度细胞对流的低阶模型。 这将促进对这种复杂现象的理解，并展示耦合陀螺仪在地球物理流体动力学研究中可以发挥的基本作用。 ***