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You searched for subject:(Inviscid Transonic Flow). Showing records 1 – 2 of 2 total matches.

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1. Carter, Jerry W. Implementation of a Lower-Upper Symmetric Gauss-Seidel Implicit Scheme for a Navier-Stokes Flow Solver.

Degree: 2011, Texas A&M University

The field of Computational Fluid Dynamics (CFD) is in a continual state of advancement due to new numerical techniques, optimization of existing codes, and the increase in memory and processing speeds of computers. In this thesis, the solution technique for a pre-existing Navier-Stokes flow solver is adapted from an explicit Runge Kutta method to a Lower-Upper Symmetric Gauss-Seidel (LU-SGS) implicit time integration method. Explicit time integration methods were originally used in CFD codes because these methods require less memory. Information needed to advance the flow in time is localized to each grid point. These explicit methods are, however, restricted by time step sizes due to stability criteria. In contrast, implicit methods are unaffected by a large time step sizes but are restricted by memory requirements due to the complexities of unstructured grids. The implementation of LU-SGS performs grid re-ordering for unstructured meshes because of the coupling of grid points in the integration method's solution. The explicit and implicit flow solvers were tested for inviscid flows in incompressible, compressible, and transoinc flow regimes. The results found by comparing the implicit and explicit algorithms revealed a significant speed up in convergence to steady state by the LU-SGS method in terms of iteration number and CPU time per iteration. Advisors/Committee Members: Cizmas, Paul G. (advisor), Duggleby, Andrew (committee member), Carlson, Leland A. (committee member).

Subjects/Keywords: Lower-Upper Symmetric Gauss-Seidel; LUSGS; Implicit Scheme; Inviscid Transonic Flow

inviscid flows about NACA 0012 and NACA 0015 airfoils. Inviscid, transonic flow through a channel… …were executed for incompressible, compressible, and transonic flow regimes. All cases were… …was the transonic flow through a channel with a circular arc. The same geometries were run… …incompressible, compressible, and transonic flow regimes relating to Mach numbers of: 0.25, 0.6, and… …finest mesh. . . . . . 38 31 Channel flow with circular arc geometry… 

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APA (6th Edition):

Carter, J. W. (2011). Implementation of a Lower-Upper Symmetric Gauss-Seidel Implicit Scheme for a Navier-Stokes Flow Solver. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-8020

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Carter, Jerry W. “Implementation of a Lower-Upper Symmetric Gauss-Seidel Implicit Scheme for a Navier-Stokes Flow Solver.” 2011. Thesis, Texas A&M University. Accessed December 13, 2019. http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-8020.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Carter, Jerry W. “Implementation of a Lower-Upper Symmetric Gauss-Seidel Implicit Scheme for a Navier-Stokes Flow Solver.” 2011. Web. 13 Dec 2019.

Vancouver:

Carter JW. Implementation of a Lower-Upper Symmetric Gauss-Seidel Implicit Scheme for a Navier-Stokes Flow Solver. [Internet] [Thesis]. Texas A&M University; 2011. [cited 2019 Dec 13]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-8020.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Carter JW. Implementation of a Lower-Upper Symmetric Gauss-Seidel Implicit Scheme for a Navier-Stokes Flow Solver. [Thesis]. Texas A&M University; 2011. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-8020

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


University of Florida

2. Karanjkar, Parag. Inviscid Transonic Flow around a Sphere.

Degree: MS, Mechanical Engineering - Mechanical and Aerospace Engineering, 2008, University of Florida

Inviscid transonic flows governed by the Euler equations are computed. Botta performed an exhaustive analysis on transonic flows over a cylinder after Pandolfi and Larocca paved way for the understanding of transonic flows. Using their work as a foundation, our study was extended to the case of a sphere. Spatial discretization was carried out using finite volume method, upwind schemes were used to compute inviscid fluxes and the computations were performed by a fourth order accurate Runge-Kutta method. Two grids have been used for the analysis of the flow. The work concentrates on the analysis of the behavior of the flow and also the effects experienced by the sphere. Four cases of freestream Mach numbers of 0.6, 0.7, 0.8 and 0.95 have been investigated in this work. It is observed that the drag on the sphere rises greatly with the increase in the Mach number. The shocks forming on the sphere are much sharper in the higher Mach number cases and further in the downstream section. The nature of the flow becomes more periodic as the freestream Mach number increases. ( en ) Advisors/Committee Members: Haselbacher, Andreas (committee chair), Mei, Renwei (committee member).

Subjects/Keywords: Aerodynamic coefficients; Amplitude; Autocorrelation; Cylinders; Drag coefficient; Entropy; Mach number; Shock waves; Transonic flow; Velocity; 3d, behavior, cfd, euler, flow, inviscid, mach, modelling, rocflump, shocks, simulation, sphere, thesis, transonic, vortex, wake

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Karanjkar, P. (2008). Inviscid Transonic Flow around a Sphere. (Masters Thesis). University of Florida. Retrieved from http://ufdc.ufl.edu/UFE0024101

Chicago Manual of Style (16th Edition):

Karanjkar, Parag. “Inviscid Transonic Flow around a Sphere.” 2008. Masters Thesis, University of Florida. Accessed December 13, 2019. http://ufdc.ufl.edu/UFE0024101.

MLA Handbook (7th Edition):

Karanjkar, Parag. “Inviscid Transonic Flow around a Sphere.” 2008. Web. 13 Dec 2019.

Vancouver:

Karanjkar P. Inviscid Transonic Flow around a Sphere. [Internet] [Masters thesis]. University of Florida; 2008. [cited 2019 Dec 13]. Available from: http://ufdc.ufl.edu/UFE0024101.

Council of Science Editors:

Karanjkar P. Inviscid Transonic Flow around a Sphere. [Masters Thesis]. University of Florida; 2008. Available from: http://ufdc.ufl.edu/UFE0024101

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