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Showing 1 to 20 of 202 for “"Ducts"”.
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Aerodynamic design of annular ducts
… methods for designing axisymmetric annular ducts having geometries capable of supporting fluid flows with prescribed performance characteristics. Three basic numerical methods of solution are given and are used to obtain results to the known exact solutions for a class of axisymmetric, …
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The secondary flow in rectangular ducts
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1957.
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High intensity sound in lined ducts
… of sound in two-dimensional and circular ducts of uniform cross sections in the absence of mean flow. The ducts are lined with a point-reacting acoustic material consisting of a porous sheet or of a perforated plate followed by honey-comb cavities and backed by the impervious walls of the …
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Acoustic characteristics of fiberglass-lined circular ducts
Fiberglass lined circular ducts are circular ducts with an outer spiral metal shell. They are either dual-wall or single-wall. They have been acoustically treated and are intended to be used in heating, ventilation and air conditioning (HVAC) duct systems to reduce the amount of sound that is …
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Aeroacoustic computation of sound radiation from ducts
… and efficiently predict noise radiation from ducts. The solver is based upon a hybrid methodology whereby only the acoustic near-field is solved using the developed numerical solver, with the resultant far-field directivity determined from an integral solution of the Ffowcs Williams - Hawking …
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Study of sound attenuation in elliptic ducts
… to study the breakout noise from distorted ducts. It has been long established that distortions in ducts significantly alter the sound radiation when subjected to an internal acoustic field. However, most of the reported work had been confined to very small distortions, and plane-wave …
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Sound transmission through lined ducts in parallel.
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1979.
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Predicting fan noise propagation in aeroengine bypass ducts
… exploited in application to real engine bypass ducts and their performance is evaluated. These methods are an improvement on current industry standards, allowing realistic duct geometry and flow conditions to be modelled with reasonable computation and time demands. The main focus is on the …
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Turbulence models for non-circular ducts and channels
… The focus is on fully-developed flows in closed ducts and open channels of various cross-sectional geometries. Two different turbulence models were evaluated: a complete Reynoldsstress- transport model and a two-equation k-f model used in conjunction with a nonlinear stress-strain relationship. …
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The aerodynamics of Formula One car cooling ducts.
… governing the flow through the sidepod ducts. These contain the heat exchang,ers for cooling the engine and gearbox. The aim of this thesis is to investigate features of the flow through the sidepod ducts, to provide a base of understanding from which further optimisation can be …
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Modeling of gamma rays streaming through straight rectangular ducts
Call number: LD2668 .T4 1985 T476
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Modeling of gamma rays streaming through straight rectangular ducts
Call number: LD2668 .T4 1985 T476
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Fully Developed and Accelerating Particulate Flow in Circular Ducts
Made available in DSpace on 2014-12-09T17:13:38Z (GMT). No. of bitstreams: 1 6604311.pdf: 4699324 bytes, checksum: 15d5bb53dd3704d11ff314ced7b6942b (MD5) Previous issue date: 1965
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Characteristics of Turbulent Flow in Ducts With Temperature Gradient
Made available in DSpace on 2014-12-05T17:15:08Z (GMT). No. of bitstreams: 1 0007007.pdf: 15304619 bytes, checksum: b3f8ddf8f0806181e837f8eb876dd6c0 (MD5) Previous issue date: 1952
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Propagation of sound in attenuating ducts containing absorptive strips
Thesis (Ph.D.) Massachusetts Institute of Technology. Dept. of Physics, 1953.
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