High Order Methods for Linear and Nonlinear Waves

线性和非线性波的高阶方法

• 批准号: 0207451
• 负责人: Chi-Wang Shu
• 金额: $ 25.67万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-15 至 2006-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0207451&HistoricalAwards=false
• 关键词: Order; Methods; Linear; Nonlinear; Waves

Shu0207451 The investigator and his colleague study high-order-accuracycomputational methods for linear and nonlinear waves, withemphasis on shock wave calculations and simulation ofelectro-magnetics waves. The work includes the development andanalysis of high-order finite difference, finite element, andspectral methods, as well as applications of these methods tocomputational fluid dynamics and computational electro-magnetics.In particular, the efforts include the following components:high-order methods for shock wave calculations, including finitedifference WENO schemes, spectral methods for supersonic reactiveflows, and finite element discontinuous Galerkin methods;high-order methods for Maxwell's equations; and perfectly matchedabsorbing layers. Computers are now used more extensively in engineering andother applied sciences. An important component to effectivelyuse computers is the design and analysis of efficient numericalalgorithms. Important applications such as computer-aided designof aircraft are to a large extent dependent on efficient andreliable algorithms designed by applied mathematicians. Thehigh-order methods the investigators develop and analyze in thisproject should significantly increase the efficiency andreliability of algorithms used in crucial application areas suchas aerospace industry, communications, and material science.

Shu0207451 研究员和同事研究线性和非线性波的高阶精度计算方法，重点是冲击波计算和电磁波模拟。 该工作包括高阶有限差分、有限元和谱方法的开发和分析，以及这些方法在计算流体动力学和计算电磁学中的应用。具体来说，工作包括以下部分：冲击波计算，包括有限差分WENO格式、超音速反应流谱法、有限元间断伽辽金法；麦克斯韦方程组的高阶方法；和完美匹配的吸收层。 计算机现在在工程和其他应用科学中得到更广泛的应用。 有效使用计算机的一个重要组成部分是高效数值算法的设计和分析。 飞机计算机辅助设计等重要应用在很大程度上依赖于应用数学家设计的高效可靠的算法。 研究人员在该项目中开发和分析的高阶方法将显着提高航空航天工业、通信和材料科学等关键应用领域所使用算法的效率和可靠性。