搜索结果: 256-270 共查到“工学 design”相关记录1291条 . 查询时间(0.156 秒)
Optimum Shape Design for Unsteady Flows with Time-Accurate Continuous and Discrete Adjoint Methods
Optimum Shape Design Unsteady Flows Time-Accurate Continuous Discrete Adjoint Methods
2015/7/2
This paper presents an adjoint method for the optimal control of unsteady flows. The goal is to develop the continuous and discrete unsteady adjoint equations and their corresponding boundary co...
Optimum Shape Design for Unsteady Three-Dimensional Viscous Flows Using a Nonlinear Frequency-Domain Method
Optimum Shape Design Unsteady Three-Dimensional Viscous Flows Nonlinear Frequency-Domain Method
2015/7/2
This paper presents an adjoint method for the optimum shape design of unsteady three-dimensional viscousflows.The goal is to develop a set of discrete unsteady adjoint equations and the correspo...
NON-LINEAR FREQUENCY DOMAIN BASED OPTIMUM SHAPE DESIGN FOR UNSTEADY THREE-DIMENSIONAL FLOWS
NON-LINEAR FREQUENCY DOMAIN BASED OPTIMUM SHAPE DESIGN UNSTEADY THREE-DIMENSIONAL FLOWS
2015/7/2
This paper presents an adjoint method for the optimum shape design of unsteady flows. The goal is to develop a set of discrete unsteady adjoint equations and the corresponding boundary condition...
Exploring the Limits of Shock-free Transonic Airfoil Design
Exploring Limits Shock-free Transonic Airfoil Design
2015/7/2
In this study the limits of shock-free transonic airfoil design are explored via computa tional uid dynamics and shape optimization. Using an inviscid ow solver coupled with the adjoint method for sha...
Enhancement of Adjoint Design Methods via Optimization of Adjoint Parameters
Enhancement Adjoint Design Methods via Optimization Adjoint Parameters
2015/7/2
Three approaches of enhancing the Euler adjoint design methods using a non-linear gradient-based optimization package, SNOPT, have been investigated. First, the conver gence of Euler and adjoint solut...
Multi-Element High-Lift Configuration Design Optimization Using Viscous Continuous Adjoint Method
Multi-Element High-Lift guration Design Optimization Viscous Continuous Adjoint Method
2015/7/2
An adjoint-based Navier–Stokes design and optimization method for two-dimensional multi-element high-lift configurations is derived and presented. The compressible Reynolds-averaged Navier–Stoke...
Challenges and Complexity of Aerodynamic Wing Design
Challenges Complexity Aerodynamic Wing Design
2015/7/2
This paper focuses on aerodynamic design methodology. It discusses challenges and complexity of aerodynamic wing design for a transonic aircraft, which arise from the complex nature of ow around the w...
AERODYNAMIC SHAPE OPTIMIZATION:EXPLORING THE LIMITS OF DESIGN
AERODYNAMIC SHAPE OPTIMIZATION EXPLORING LIMITS DESIGN
2015/7/2
This paper discusses the role that computational fluid dynamics (CFD) plays in the design of aircraft. An overview of the design process is provided, covering some of the typical decisions that ...
This paper discusses the role that computational uid dynamics plays in the design of aircraft. An overview of the design process is provided, covering some of the typical decisions that a design team ...
OPTIMUM SHAPE DESIGN FOR UNSTEADY FLOWS USING TIME ACCURATE AND NON-LINEAR FREQUENCY DOMAIN METHODS
ACCURATE NON-LINEAR FREQUENCY DOMAIN METHODS
2015/7/2
This paper presents an adjoint method for the optimum shape design of unsteady flows. The goal is to develop a set of discrete unsteady adjoint equations and their corresponding boundary conditi...
CFD for Aerodynamic Design and Optimization:Its Evolution over the Last Three Decades
CFD Aerodynamic Design Optimization Evolution Last Three Decades
2015/7/2
The AIAA First Computational Fluid Dynamics Conference, held in Palm Springs in July 1973, signified the emergence of computational fluid dynamics (CFD) as an accepted tool for airplane de...
To account for the elastic nature of the sail cloth, this ow solver is coupled to NASTRAN to provide estimates of the de ections caused by the pressure loading. The results from the aeroelastic simul...
While aerodynamic prediction methods based CFD are now well estab lished, and quite accurate and robust, the ultimate need in the design process is to find the optimum shape which maximizes the ...
Design Optimization of High–Lift Configurations Using a Viscous Continuous Adjoint Method
Design Optimization High–Lift Confi gurations Viscous Continuous Adjoint Method
2015/7/2
An adjoint-based Navier-Stokes design and optimization method for two-dimensional multi-element high-lift configurations is derived and presented. The compressible Reynolds-Averaged Navier-Stoke...
Advanced Algorithms for Design and Optimization of Quiet Supersonic Platforms
Advanced Algorithms Design Optimization Quiet Supersonic Platforms
2015/7/2
This paper describes the work carried out within the Stanford University group as part of the DARPA-funded Quiet Supersonic Platform (QSP) project. The objective of our work was to develop advanced nu...