Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 42 for “"Compressible flows"”.
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Fluid-structure interaction in compressible flows
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Design of cascades in compressible flows
Thesis: Sc. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1950
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Compressible flows of dense gases in boundary layers
… for the analysis of dense-gas boundary-layer flows over arbitrarily shaped two-dimensional bodies are developed. The governing equations are derived from the Navier-Stokes-Fourier equations for a general fluid. A numerical method based on the second-order Davis-coupled scheme is employed to …
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The development of solution algorithms for compressible flows
This work investigates three main topics. The first of these is the development and comparison of time integration schemes on two-dimensional unstructured meshes. Both explicit and implicit solution algorithms for the two-dimensional Euler equations on unstructured grids are presented. …
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A Hybridized Discontinuous Petrov-Galerkin scheme for compressible flows
… Discontinuous Petrov-Galerkin scheme (HDPG) for compressible flows is presented. The HDPG method stems from a combination of the Hybridized Discontinuous Galerkin (HDG) method and the theory of the optimal test functions, suitably modified to enforce the conservativity at the element level. The …
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Actuator selection and placement for linear feedback control of compressible flows
… for active control of high-Reynolds number flows is largely based on experience and trial-and-error because of the system’s large dimensionality and complexity. A novel strategy for estimating how to select and place a linear feedback control system using co-located actuator(s)/sensor(s) …
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Anisotropic output-based adaptation with tetrahedral cut cells for compressible flows
Anisotropic, adaptive meshing for flows around complex, three-dimensional bodies remains a barrier to increased automation in computational fluid dynamics. Two specific advances are introduced in this thesis. First, a finite-volume discretization for tetrahedral cut-cells is developed that makes …
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A Higher Order Accurate Finite Element Method for Viscous Compressible Flows
… of each discretization. Examples of inviscid flows including subsonic flow past a parabolic bump on a wall and subsonic and transonic flows past a NACA 0012 airfoil and laminar flows including flow past a a flat plate and flow past a NACA 0012 airfoil are included to qualitatively evaluate the …
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Development of a Higher-Order Navier-Stokes Solver for Transient Compressible Flows
… solver was developed for 2‐Dimensional flows using the finite volume approach. The Van leer flux‐splitting technique was used to calculate the fluxes. The second‐order spatial accuracy was achieved using the variable extrapolation method developed by Van leer called the Montone Upstream …
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Development and Validation of a Turbulence Wall Model for Compressible Flows with Heat Transfer
… computational cost to model high Reynolds number flows of engineering interest scales poorly with problem size and is excessively expensive. This fact motivates the development of turbulence wall models to lessen the computational burden. These models aim to provide accurate wall flux …
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An anisotropic adaptive method for the solution of 3-D inviscid and viscous compressible flows
… of three-dimensional inviscid and viscous flows by the finite element method. An edge-based error estimate drives a mesh movement strategy that allows directional stretching and re-orientation of the grid with more mesh points introduced along those directions with rapidly changing …
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A parabolic quadrilateral finite element for compressible and incompressible flows
A unified finite element solution scheme for incompressible and compressible flows would be most attractive in engineering practice. The objective in this thesis was to work toward this goal. A 9-node finite element for compressible and incompressible 2-D flow solutions is presented. In the …
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The study on adaptive Cartesian grid methods for compressible flow and their applications
… cell method and its applications for inviscid compressible flow on adaptive tree Cartesian grid are developed. The proposed method is successfully used to evaluate various inviscid compressible flows around complex bodies. The mass conservation of the method is also studied by numerical …
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Quantification of the Depth-of-Field in a Self-Aligned Focusing Schlieren System
… quantitative measurements of three-dimensional compressible flows. Conventional schlieren imaging provides valuable visualization of density gradients, but it records only a line-of-sight projection and therefore does not directly resolve the spatial distribution of structures through the depth …
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Two-dimensional subsonic compressible flow about an arbitrary Joukowsky airfoil
… that the method of calculating subsonic compressible flows proposed by Gelbart is valid and practical for arbitrary airfoil shapes for which a convenient mapping function exists, It was found that the method can be carried out with comparative ease as compared to numerical methods of …
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