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Use of Optical Superbeams in Atmospheric Turbulence Applications
Title
Use of Optical Superbeams in Atmospheric Turbulence Applications
Author
Gu, Yalong
Date Created
2011
Subjects--Topical
Optics
Description
The use of nonconventional beam classes in turbulence applications is investigated. Through the study on pseudo-Bessel correlated beam propagation in the atmosphere, it is shown that scintillation reduction by a partially coherent beam can be obta...
ISOGEOMETRIC ANALYSIS AND PATCHWISE REPRODUCING POLYNOMIAL PARTICLE METHOD FOR PLATES
Title
ISOGEOMETRIC ANALYSIS AND PATCHWISE REPRODUCING POLYNOMIAL PARTICLE METHOD FOR PLATES
Author
Kim, Hyunju
Date Created
2013
Subjects--Topical
Mechanical engineering, Mathematics
Description
Isogeometric analysis (IGA) is a framework bridging the gap between Computer Aided Design (CAD) and Finite Element Analysis (FEA). So it drastically reduces the error in the representation of the computational domain and the re-meshing by the use ...
Isogeometric collocation method for elasticity problems containing singularities
Title
Isogeometric collocation method for elasticity problems containing singularities
Author
Rattan, Puja
Date Created
2016
Subjects--Topical
Mathematics
Description
Isogeometric analysis (IGA), introduced by Hughes, et al. [2,3], is a mathematical approach that combines Finite Element analysis (FEA) in conjunction with engineering design tools, such as CAD, which allows analysis, testing and redesign of struc...
MICROSTRUCTURAL MODELING DURING MULTI-PASS ROLLING OF A NICKEL-BASE SUPERALLOY
Title
MICROSTRUCTURAL MODELING DURING MULTI-PASS ROLLING OF A NICKEL-BASE SUPERALLOY
Author
Subramanian, Kannan
Date Created
2009
Subjects--Topical
Mechanical engineering, Materials science
Description
Microstructure present at the end of rolling and cooling operations controls the product properties. Therefore, control of grain size is an important characteristic in any hot-working. The narrow temperature range for hot working of Alloy 718 make...
MECHANISTIC STUDY OF SELF-ASSEMBLED TUNGSTEN NANOGRATINGS ON SOLIDS INDUCED BY FEMTOSECOND LASER BEAM
Title
MECHANISTIC STUDY OF SELF-ASSEMBLED TUNGSTEN NANOGRATINGS ON SOLIDS INDUCED BY FEMTOSECOND LASER BEAM
Author
Tang, Mingzhen
Date Created
2010
Subjects--Topical
Optics
Description
This dissertation describes a mechanistic study on the spontaneous formation of tungsten nanograting induced by a 400 nm femtosecond laser beam on solids observed in laser induced chemical vapor deposition configuration. The formed tungsten nanogr...
THE TURBULENT REACTING RICHTMYER-MESHKOV INSTABILITY: A NEW CANONICAL PROBLEM IN NON-PREMIXED COMBUSTION
Title
THE TURBULENT REACTING RICHTMYER-MESHKOV INSTABILITY: A NEW CANONICAL PROBLEM IN NON-PREMIXED COMBUSTION
Author
Varshochi, Hilda
Date Created
2016
Subjects--Topical
Mechanical engineering
Description
We describe detailed high-resolution numerical simulations of a class of shock-induced reactive turbulent mixing layers, where the scalar mixing, flow dynamics and combustion properties are driven by the Richtmyer-Meshkov (RM) instability. The 3D ...
High Order H(div) Discontinuous Galerkin Methods for MHD Equations
Title
High Order H(div) Discontinuous Galerkin Methods for MHD Equations
Author
Wu, Jian
Date Created
2016
Subjects--Topical
Mathematics
Description
In this dissertation, we investigate the divergence-free discontinuous Galerkin method using the $\mathcal{H}$(\textbf{div}) basis, to solve the nonlinear ideal magnetohydrodynamics (MHD) equations. This is a novel approach to ensure the divergenc...