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There are a total of 34 record(s) matching your query.
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A Rapid Aerodynamic Design Procedure Based on Artificial Neural Networks
Author(s): Rai, Man Mohan
Abstract: An aerodynamic design procedure that uses neural networks to model the functional behavior of the objective function in design space has been developed. This method incorporates several improvements to an earlier method that ...
NASA Center: Ames Research Center Publication Year: 2001
Added to NTRS: 2008-06-02
Document ID: 20010071454
Prediction of turbine rotor-stator interaction using Navier-Stokes methods
Author(s): Madavan, Nateri K.; Rai, Man Mohan; Gavali, Sharad
Abstract: Flows in turbomachinery are generally complex and do not easily lend themselves to numerical computation. The flows are three-dimensional and inherently unsteady. Complicated blade geometries and flow phenomena such as ...
NASA Center: Ames Research Center Publication Year: 1989
Added to NTRS: 2008-05-31
Accession Number: 91N10881; Document ID: 19910001568
Direct Numerical Simulations of Boundary Layer Transition on a Flat Plate
Author(s): Rai, Man Mohan
Abstract: In recent years the techniques of computational fluid dynamics (CFD) have been used to compute flows associated with geometrically complex configurations. However, success in terms of accuracy and reliability has been ...
NASA Center: Ames Research Center Publication Year: 1997
Added to NTRS: 2007-02-07
Document ID: 20070003475
Application of Artificial Neural Networks to the Design of Turbomachinery Airfoils
Author(s): Rai, Man Mohan; Madavan, Nateri
Abstract: Artificial neural networks are widely used in engineering applications, such as control, pattern recognition, plant modeling and condition monitoring to name just a few. In this seminar we will explore the possibility of ...
NASA Center: Ames Research Center Publication Year: 1997
Added to NTRS: 2007-02-07
Document ID: 20070002487
Single- and Multiple-Objective Optimization with Differential Evolution and Neural Networks
Author(s): Rai, Man Mohan
Abstract: Genetic and evolutionary algorithms have been applied to solve numerous problems in engineering design where they have been used primarily as optimization procedures. These methods have an advantage over conventional ...
NASA Center: Ames Research Center Publication Year: 2006
Added to NTRS: 2006-09-29
Document ID: 20060015688
Three-dimensional Navier-Stokes simulations of turbine rotor-stator interaction
Author(s): Rai, Man Mohan
Abstract: Fluid flows within turbomachinery tend to be extremely complex in nature. Understanding such flows is crucial to improving current designs of turbomachinery. The computational approach can be used to great advantage in ...
NASA Center: Ames Research Center Publication Year: 1988
Added to NTRS: 2005-10-13
Accession Number: 88N29750; Document ID: 19880020366; Report Number: A-88106, NAS 1.15:100081, NASA-TM-100081
Navier-Stokes Simulation Of Turbine Rotor/Stator Interaction
Author(s): Rai, Man Mohan
Abstract: Patched-grid method used to effect three-dimensional Navier-Stokes numerical simulation of flow interacting with both rotor and stator in turbine. Involves use of two or more grids or sets of grids to solve finite-difference ...
NASA Center: Ames Research Center Publication Year: 1989
Added to NTRS: 2005-09-30
Accession Number: 89B10372; Document ID: 19890000372; Report Number: ARC-12185
Numerical Simulation Of Turbine Rotor/Stator Interaction
Author(s): Rai, Man Mohan; Madavan, Nateri K.
Abstract: Report describes numerical simulation of time-varying flows around multiple rotor and stator airfoils in turbine. Conducted with help of new computer program simulating flow in turbine stage configured with unequal numbers ...
NASA Center: Ames Research Center Publication Year: 1989
Added to NTRS: 2005-09-30
Accession Number: 89B10525; Document ID: 19890000525; Report Number: ARC-12293
Using Multiple Grids To Compute Flows
Author(s): Rai, Man Mohan
Abstract: Paper discusses decomposition of global grids into multiple patched and/or overlaid local grids in computations of fluid flow. Such "domain decomposition" particularly useful in computation of flows about complicated bodies ...
NASA Center: Ames Research Center Publication Year: 1991
Added to NTRS: 2005-09-30
Accession Number: 91B10092; Document ID: 19910000092; Report Number: ARC-12321
Calculating Rotor/Stator Interactions
Author(s): Rai, Man Mohan
Abstract: Analysis procedure and associated computer code use Euler equations of fluid motion and patched coordinate grids to simulate fluid flow about rotor airfoil moving with respect to stator airfoil. Procedure useful in studies ...
NASA Center: Ames Research Center Publication Year: 1988
Added to NTRS: 2005-09-30
Accession Number: 88B10118; Document ID: 19880000118; Report Number: ARC-11724
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