搜索结果: 1-14 共查到“航空、航天科学技术 Methods”相关记录14条 . 查询时间(0.18 秒)
Shock detection and capturing methods for high order Discontinuous-Galerkin Finite Element Methods
Shock detection capturing methods high order Discontinuous-Galerkin Finite Element Methods
2015/7/6
High-order Discontinuous Galerkin (DG) methods have shown a lot of promise in being able to provide high accuracy and eciency as well as the exibility to handle complex unstructured grids. However in...
Discrete filter operators for large-eddy simulation using high-order spectral difference methods
high-order methods LES turbulence models discrete fi lters spectral difference channel fl ow
2015/7/3
The combination of a high-order unstructured spectral difference (SD) spatial discretization scheme with sub-grid scale (SGS) modeling for large-eddy simulation is investigated with particular focus o...
Facilitating the Adoption of Unstructured High-Order Methods Amongst a Wider Community of Fluid Dynamicists
high-order unstructured mesh generation time integration shock capturing
2015/7/3
Theoretical studies and numerical experiments suggest that unstructured high-order methods can provide solutions to otherwise intractable fluid flow problems within complex geometries.
Enhancement of a Class of Adjoint Design Methods via Optimization of Parameters
Enhancement Adjoint Design Methods Optimization Parameters
2015/7/3
INCE the adjoint method was introduced to aerodynamic shape optimization in 1980s [1,2], this method has become a popular choice for design problems involving fluid flow and has been succe...
Edge-based Meshless Methods for Compressible Flow Simulations
Edge-based Meshless Methods Compressible Flow Simulations
2015/7/2
This work concerns the development of a highly accurate and ecient meshless ow solver for inviscid ow in two dimensions. Novel aspects of this work include the application of mesh-based reconstructio...
High-Order Accurate Methods for High-Speed Flow
High-Order Accurate Methods High-Speed Flow
2015/7/2
This work focuses on high-order numerical schemes for conservation laws with emphasis on problems that admit discontinuous solutions. We will investigate several enabling techniques with the aim to co...
AERODYNAMIC SHAPE OPTIMIZATION USING UNSTRUCTURED GRID METHODS
AERODYNAMIC SHAPE OPTIMIZATION UNSTRUCTURED GRID METHODS
2015/7/2
The mesh movement techniques were effective in reducing the grid generation wall clock time by 70%. Detailed results of the AIRPLANE-based optimization technique are presented. The performance gains r...
Gas-kinetic schemes developed from the BGK model have been successfully applied to 1-D and 2-D flows [1,2]. One of the advantages of the gas-kinetic approach over more conventional methods is realized...
Sensitivity of Code Tracking Methods to PRN Differences
Sensitivity Tracking Methods PRN Differences
2015/6/25
Many of the future GNSS ranging codes produce correlation functions that have two or more prominent sidelobes immediately adjacent to the primary peak. These more complex code modulations have inspire...
TIME-INTEGRATION METHODS IN COMPUTATIONAL AER OD YNAMICS
AER OD YNAMICS Integration method
2015/6/18
TIME-INTEGRATION METHODS IN COMPUTATIONAL AER OD YNAMICS。
Aircraft Family Design Using Decomposition-based Methods
Decomposition-based Methods Family Design
2015/6/18
Two decomposition-based methods are applied to the aircraft family problem: collaborative optimization and analytical target cascading. This paper marks
the beginning of a collaborative effort ...
COMPARISON AND ANALYSIS OF NONLINEAR LEAST SQUARES METHODS FOR VISION BASED NAVIGATION (VBN) ALGORITHMS
UAV Nonlinear Optimization Vision Based Navigation
2014/4/25
A robust scale and rotation invariant image matching algorithm is vital for the Visual Based Navigation (VBN) of aerial vehicles, where matches between an existing geo-referenced database images and t...
Studies on compatibility of energetic materials by thermal methods
Compatibility Energetic materials Differential scanning calorimetry
2010/10/25
The chemical compatibility of explosives, pyrotechnics and propellants with those materials is studied to evaluate potential hazards when in contact with other materials during production, storage and...
Comparing Multicarrier Ambiguity Resolution Methods for Geometry-Based GPS and Galileo Relative Positioning and Their Application to Low Earth Orbiting Satellite Attitude Determination
Multicarrier Ambiguity Resolution Methods Geometry-Based GPS Galileo Relative Positioning Low Earth Orbiting Satellite Attitude Determination
2009/9/3
This paper presents an evaluation of several GNSS multicarrier ambiguity (MCAR) resolution techniques for the purpose of attitude determination of low earth orbiting satellites (LEOs). It is based on ...