Author: D. Nixon
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
This report summarizes work concerned with some topics connected with a transonic flow theory and also some problems in adaptive mesh procedures. The work on adaptive mesh procedures is concerned with the development of adaptive mesh strategies and solution procedures for highly clustered adaptive meshes. It has been found that the strong conservation law form of the governing equations in computational variables cannot capture the shock waves correctly for arbitrary clustering. Methods for correcting this problem have been investigated. The work on transonic flow theory is concerned with the existence of multiple solutions in full potential calculations. Since the full potential equation is difficult to analyze compared with small disturbance equation, multiple solutions have been found using transonic small disturbance theory. These results have been analyzed using the transonic integral equation theory and indicate that the transonic potential theory is not formulated uniquely.
Research on Topics in Transonic Flow Theory and Adaptive Grid Generation
Author: D. Nixon
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
This report summarizes work concerned with some topics connected with a transonic flow theory and also some problems in adaptive mesh procedures. The work on adaptive mesh procedures is concerned with the development of adaptive mesh strategies and solution procedures for highly clustered adaptive meshes. It has been found that the strong conservation law form of the governing equations in computational variables cannot capture the shock waves correctly for arbitrary clustering. Methods for correcting this problem have been investigated. The work on transonic flow theory is concerned with the existence of multiple solutions in full potential calculations. Since the full potential equation is difficult to analyze compared with small disturbance equation, multiple solutions have been found using transonic small disturbance theory. These results have been analyzed using the transonic integral equation theory and indicate that the transonic potential theory is not formulated uniquely.
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
This report summarizes work concerned with some topics connected with a transonic flow theory and also some problems in adaptive mesh procedures. The work on adaptive mesh procedures is concerned with the development of adaptive mesh strategies and solution procedures for highly clustered adaptive meshes. It has been found that the strong conservation law form of the governing equations in computational variables cannot capture the shock waves correctly for arbitrary clustering. Methods for correcting this problem have been investigated. The work on transonic flow theory is concerned with the existence of multiple solutions in full potential calculations. Since the full potential equation is difficult to analyze compared with small disturbance equation, multiple solutions have been found using transonic small disturbance theory. These results have been analyzed using the transonic integral equation theory and indicate that the transonic potential theory is not formulated uniquely.
Research on Topics in Perturbation Methods, Transonic Flow Theory, Numerical Analysis and Adaptive Grid Generation
Author: D. Nixon
Publisher:
ISBN:
Category :
Languages : en
Pages : 35
Book Description
This report summarizes work performed during the period April 1, 1979 to January 31. The work is concerned with certain topics on perturbation theory, transonic flow theory, numerical analysis, and adaptive grid generation.
Publisher:
ISBN:
Category :
Languages : en
Pages : 35
Book Description
This report summarizes work performed during the period April 1, 1979 to January 31. The work is concerned with certain topics on perturbation theory, transonic flow theory, numerical analysis, and adaptive grid generation.
AFOSR Technical Report Summaries
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 280
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 280
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 702
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 702
Book Description
Evaluation of Truncation Error and Adaptive Grid Generation for the Transonic Full Potential Flow Calculations
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 42
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 42
Book Description
A New Solution-Adaptive Grid Generation Method for Transonic Airfoil Flow Calculations
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723401305
Category :
Languages : en
Pages : 26
Book Description
The clustering algorithm is controlled by a second-order, ordinary differential equation which uses the airfoil surface density gradient as a forcing function. The solution to this differential equation produces a surface grid distribution which is automatically clustered in regions with large gradients. The interior grid points are established from this surface distribution by using an interpolation scheme which is fast and retains the desirable properties of the original grid generated from the standard elliptic equation approach. Nakamura, S. and Holst, T. L. Ames Research Center NASA-TM-81330, A-8733 NCA2-OR565-901
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723401305
Category :
Languages : en
Pages : 26
Book Description
The clustering algorithm is controlled by a second-order, ordinary differential equation which uses the airfoil surface density gradient as a forcing function. The solution to this differential equation produces a surface grid distribution which is automatically clustered in regions with large gradients. The interior grid points are established from this surface distribution by using an interpolation scheme which is fast and retains the desirable properties of the original grid generated from the standard elliptic equation approach. Nakamura, S. and Holst, T. L. Ames Research Center NASA-TM-81330, A-8733 NCA2-OR565-901
Grid Generation Methods
Author: Vladimir D. Liseikin
Publisher: Springer Science & Business Media
ISBN: 3662039494
Category : Science
Languages : en
Pages : 363
Book Description
This text is an introduction to methods of grid generation technology in scientific computing. Special attention is given to methods developed by the author for the treatment of singularly-perturbed equations, e.g. in modeling high Reynolds number flows. Functionals of conformality, orthogonality, energy and alignment are discussed.
Publisher: Springer Science & Business Media
ISBN: 3662039494
Category : Science
Languages : en
Pages : 363
Book Description
This text is an introduction to methods of grid generation technology in scientific computing. Special attention is given to methods developed by the author for the treatment of singularly-perturbed equations, e.g. in modeling high Reynolds number flows. Functionals of conformality, orthogonality, energy and alignment are discussed.
Government Reports Annual Index
Author:
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 1168
Book Description
Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 1168
Book Description
Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
FY ... US Air Force Plan for Defense Research Sciences
Author:
Publisher:
ISBN:
Category : Aeronautics, Military
Languages : en
Pages : 248
Book Description
Publisher:
ISBN:
Category : Aeronautics, Military
Languages : en
Pages : 248
Book Description
Government Reports Announcements & Index
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 720
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 720
Book Description