scholarly journals Final Report for''Numerical Methods and Studies of High-Speed Reactive and Non-Reactive Flows''

2002 ◽  
Author(s):  
D Schwendeman
Keyword(s):  
Numerical Methods ◽  
High Speed ◽  
Final Report ◽  
Reactive Flows

Stochasticity and Dynamics of High-Speed Reactive Flows

2011 ◽  
Author(s):  
E. S. Oran ◽  
Jiachun Li ◽  
Song Fu
Keyword(s):  
High Speed ◽  
Reactive Flows

scholarly journals High speed low damage grinding of advanced ceramics - Phase II Final Report

2000 ◽  
Author(s):  
J.A. Kovach ◽  
S. Malkin
Keyword(s):  
Phase Ii ◽  
High Speed ◽  
Final Report ◽  
Advanced Ceramics

Surveying Computations: Backsight — Turning Point — Foresight

1983 ◽  
Vol 37 (4) ◽  
pp. 247-254
Author(s):  
Kresho Frankich
Keyword(s):  
Problem Solving ◽  
Numerical Methods ◽  
Approximation Theory ◽  
Analytical Methods ◽  
High Speed ◽  
Turning Point ◽  
Data Handling ◽  
Engineering Work ◽  
Electronic Computers ◽  
Digital Or

Surveying computations are an integral part of the surveying profession. Until only a few decades ago they were performed by logarithms, mechanical calculators and slide rules. Mathematical models had to be given in forms suitable for the computational means available to the profession. The invention of digital or high-speed electronic computers led to a revolution in data handling and problem solving practices. The application of modern computers and calculators in surveying necessitates a radical reorganization of scientific research and everyday engineering work. Analytical methods of computations have not lost their importance, although the domains of their applications have changed. Computers brought a variety of numerical methods which, together with approximation theory, have become the most important part of surveying computations.

Improved Two-Dimensional Dynamic Stall Prediction with Structured and Hybrid Numerical Methods

2011 ◽  
Vol 56 (4) ◽  
pp. 1-12 ◽  
Author(s):  
K. Richter ◽  
A. Le Pape ◽  
T. Knopp ◽  
M. Costes ◽  
V. Gleize ◽  
...  
Keyword(s):  
Numerical Methods ◽  
Numerical Method ◽  
High Speed ◽  
Turbulence Modeling ◽  
Turbulence Models ◽  
Boundary Layer Transition ◽  
Dynamic Stall ◽  
Two Dimensional ◽  
Layer Transition ◽  
The Impact

A joint comprehensive validation activity on the structured numerical method elsA and the hybrid numerical method TAU was conducted with respect to dynamic stall applications. To improve two-dimensional prediction, the influence of several factors on the dynamic stall prediction was investigated. The validation was performed for three deep dynamic stall test cases of the rotor blade airfoil OA209 against experimental data from two-dimensional pitching airfoil experiments, covering low-speed and high-speed conditions. The requirements for spatial discretization and for temporal resolution in elsA and TAU are shown. The impact of turbulence modeling is discussed for a variety of turbulence models ranging from one-equation Spalart–Allmaras-type models to state-of-the-art, seven-equation Reynolds stress models. The influence of the prediction of laminar/turbulent boundary layer transition on the numerical dynamic stall simulation is described. Results of both numerical methods are compared to allow conclusions to be drawn with respect to an improved prediction of dynamic stall.

scholarly journals Coal-fueled high-speed diesel engine development. Final report, September 28, 1990--November 30, 1993

1993 ◽  
Author(s):  
R.M. Kakwani ◽  
R.E. Winsor ◽  
T.W. III Ryan ◽  
J.A. Schwalb ◽  
S. Wahiduzzaman ◽  
...  
Keyword(s):  
Diesel Engine ◽  
High Speed ◽  
Final Report ◽  
High Speed Diesel ◽  
Engine Development
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