Browsing by Author "Shelton, Andrew"

Now showing items 1-13 of 13

3-D Visualization of a Zero-Pressure Gradient Turbulent Boundary Layer

Williams, Steven (2010-05-10)

The application of a novel technique for 3-D visualization of a zero-pressure gradient turbulent boundary layer is discussed. Measurements of a 1.65δ x 1.65δ x 1.65δ volume were taken at a flow speed of 96 ft/s, Reθ ~ 5900, ...

Aerodynamic loads over arbitrary bodies by method of integrated circulation

Ahuja, Vivek (2013-07-24)

A method for the application of vorticity based potential-flow solvers to unstructured surface meshes has been created. This method is designed to maintain the advantages of the vorticity based solvers while removing the ...

Ant Colony Optimization : An Alternative Heuristic for Aerospace Design Applications

Kiyak, Zachary (2014-01-09)

A modified ant colony optimization (ACO) algorithm is applied to a set of solid-rocket-motor and single-stage solid missile design problems. A local search procedure is also integrated with the algorithm, adding a search ...

Application of the Discontinuous Galerkin Method to Wake Vortex Flows

Watson, Robert, III (2015-02-19)

A code was developed that utilizes the discontinuous Galerkin method to solve the Euler equations while utilizing a modal arti cial viscosity sensor developed by Klockner [12]. The sensor was augmented for the purpose ...

Application of the Level Set Method to Solid Rocket Motor Simulation

Albarado, Kevin (2012-04-19)

The body of work encompassed in this thesis merges two advanced concepts for developing flow solutions with level sets to develop an accurate and e cient method for simulating solid rocket motor grain regression. The ...

Automated Nozzle Design through Axis-Symmetric Method of Characteristics Coupled with Chemical Kinetics

Young, Reid (2012-05-10)

A method of designing axis-symmetric nozzles with included finite-rate chemical kinetics has been developed. The use of the axis-symmetric method of characteristics coupled with finite-rate chemistry allows for the design ...

A Comparison of Artificial Viscosity Sensors for the Discontinuous Galerkin Method

Favors, Joshua (2013-08-20)

The following work focuses on the development of an explicit Runge-Kutta, discontinuous Galerkin finite element method for the nonlinear, hyperbolic Euler equations. The discontinuous Galerkin method is a control-volume ...

An Empirical and Computational Investigation into the Acoustical Environment at the Launch of a Space Vehicle

Smith, Wesley, III (2013-12-04)

During the launch of a space vehicle, the intense sound pressure levels created around the vehicle can excite the vehicle itself, payload, launch tower, and ground support systems into hazardous and potentially damaging ...

An Examination of MHz Rate PIV in a Heated Supersonic Jet

Brock, Bryan (2014-07-29)

An experimental investigation of a high temperature, supersonic jet conducted at the University of Mississippi's National Center for Physical Acoustics is described. Time-resolved particle image velocimetry (PIV) was used ...

Experimental and Computational Investigation of a Turbofan Inlet Duct

Hall, Zachary (2009-11-20)

The flow field of an axisymmetric turbofan inlet was investigated experimentally and computationally. Flow visualization results were obtained using LIF, hydrogen bubbles, and PIV. Incidence angle was determined to be a ...

Integration of Grid Fins for the Optimal Design of Missile Systems

Ledlow, Timothy, II (2014-05-02)

Grid fins are unconventional missile control and stabilization devices that produce unique aerodynamic characteristics that are vastly different from that of the conventional planar fin. History has shown that grid fins ...

Optimization of Fuel-Air Mixing for a Scramjet Combustor Geometry Using CFD and a Genetic Algorithm

Ahuja, Vivek (2008-12-15)

A new methodology for the optimization of fuel-air mixing in a scramjet combustor using integrated Genetic Algorithms and Computational Fluid Dynamics is presented. A typical combustor design involving Mach 2 crossflow ...

Resolution and Boundary Placement Effects on Discontinuous Galerkin Simulations of Counter-rotating Vortex Interaction in a Confined Domain

Reitz, Rachel (2013-11-08)

The wakes of fixed-wing and rotary-wing aircraft present some of the most complex and challenging problems for numerical simulation, as fully capturing the interaction of the various vortices and coherent structures requires ...