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Showing 1 to 20 of 84 for “"Compressible Flow"”.
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Actuator Disk Theory for Compressible Flow
… or Froude’s Momentum Theory was established for compressible, subsonic flow using the three laws of conservation and isentropic thermodynamics. The compressible Actuator Disk Theory was established for the unducted (bare) and ducted cases in which the disk was treated as the only assembly within …
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Compressible Flow Analysis of Thrust Augmenting Ejectors
… very accurate in describing the turbulent mixing flow process taking place in the ejector chamber. The results from the two approaches are found to be in good agreement, although some discrepancies could be found in the case of supersonic ejectors.</p>
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A membrane analogy for investigating compressible flow
Results are shown on page 47 in a table.
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Compressible Flow Characterization Using Non-Intrusive Acoustic Measurements
… work, the use of acoustics for non-intrusive flow monitoring in compressible flows is explored and a novel sonic anemometry and thermometry (SAT) technique is developed. Using multiple arrangements of SAT equipment, a compressible acoustic tomography technique was also developed to resolve …
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A discontinuous Galerkin spectral element method compressible flow solver
… algorithms for highly-scalable high-order compressible flow simulation using the discontinuous Galerkin spectral element method. The algorithms are designed for simulation of compressible turbulence in realistic engineering geometries that are relevant to a broad range of mechanical …
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Grid adaptation for functional outputs of compressible flow simulations
… improving the accuracy of functional outputs of compressible flow simulations. The procedure is based on an adjoint formulation in which the estimated error in the functional can be directly related to the local residual errors of both the primal and adjoint solutions. This relationship allows …
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Techniques for compressible flow calculations on multi-zone grids
In order to simulate inviscid/viscous compressible flowfields about 3-D realistic aerodynamic bodies, the combined use of an implicit, upwind biased real gas scheme with 3-D fully conservative patched grid techniques is discussed. An "equivalent" gamma formulation is implemented in order to model …
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Analysis of a Hybrid Rocket Burn Using Generalized Compressible Flow
… mass of solid fuel. The variation of the flow properties along the axial length of the port are calculated using a generalized one-dimensional compressible flow analysis. The combined effects of wall mass injection and heat addition are taken into account.</p>
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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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A numerical investigation of compressible flow in a curved S-duct
Subsonic flow of a compressible, viscous fluid through a compact, high-offset S-duct is studied using numerical simulation of the Reynolds-averaged Navier-Stokes equations on an unstructured grid in three spatial dimensions. Results are compared to existing experimental steady-state data to …
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Compressible Flow Through Convergent Conical Nozzles With Emphasis on Thetransonic Region
Made available in DSpace on 2014-12-09T17:13:45Z (GMT). No. of bitstreams: 1 6901305.pdf: 2610215 bytes, checksum: 3f8d31f2208f27e3312562d78a2d1bb8 (MD5) Previous issue date: 1968
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Wave propagation in pipes of slowly-varying radius with compressible flow
… and energy distributions. Finally, mean flow is added and the same analysis is carried out, paying particular attention to the differences which arise in comparison to the stationary flow case.
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The study on adaptive Cartesian grid methods for compressible flow and their applications
… Cartesian grid methods for compressibl e flow. At first, the ghost 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. …
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Simulation of 3-D viscous compressible flow in multistage turbomachinery by finite element methods
The flow in a multistage turbomachinery blade row is compressible, viscous, and unsteady. Complex flow features such as boundary layers, wake migration from upstream blade rows, shocks, tip leakage jets, and vortices interact together as the flow convects through the stages. These interactions …
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Direct numerical simulation of a tumbling short cylinder in low Reynolds number compressible flow
Limited Restriction Lifted for Item 50492 on 2016-09-22T20:59:06Z.
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Implementation and Verification of a Synthetic Eddy Method (SEM) in the Eagle3d Compressible Flow Solver
… a Synthetic Eddy Method (SEM) into the Eagle3D compressible flow solver. Both the ability of Eagle3D to resolve unsteady turbulent ow field and capability of the SEM to reproduce given Reynolds stress profiles to start realistic turbulent behavior are verified using common academic cases. …
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The development of reynolds averaged navier stokes solver for a two dimensional compressible flow problem
… science focuses on the way how to solve the flow problems numerically. The governing equation of fluid motion passing through an object flow can be presented in various forms depending on the assumption imposed to the flow problem in hand. Initially, in solving the flow problem passing …
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An exact and consistent adjoint method for high-fidelity discretization of the compressible flow equations
… have enabled accurate predictions of complex compressible turbulence phenomena, such as the generation of jet noise that motivates the present effort. However, limited understanding of underlying physical mechanisms restricts the utility of such predictions since they do not, by themselves, …
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