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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 51 to 60 of 183 (0.087 seconds)Spelling suggestions: "subject:"diynamics -- amathematical models."" "subject:"diynamics -- dmathematical models.""
| 51 |
A computational fluid dynamics simulation model for flare analysis and controlCastiñeira Areas, David 28 August 2008 (has links)
Not available / text
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| 52 |
RANDOM VIBRATION ANALYSIS BY THE POWER SPECTRUM AND RESPONSE SPECTRUM METHODS (WHITE NOISE, FINITE-ELEMENT, VANMARCKE, DENSITY, NASTRAN).DITOLLA, ROBERT JOHN. January 1986 (has links)
Determination of the stresses and displacements which occur in response to random excitations cannot be accomplished by traditional deterministic analysis methods. As the specification of the excitation and the response of the structure become more complex, solutions by direct, closed-form methods require extensive computations. Two methods are presented which can be used in the analysis of structures which are subjected to random excitations. The Power Spectrum Method is a procedure which determines the random vibration response of the structure based upon a frequency response analysis of a structural model. The Response Spectrum Method is a method which is based upon specified forces or displacements as a function of time. A derivation of each of the methods is presented and followed by comparisons of the results which were obtained for single and multiple-degree-of-freedom systems. Assumptions and limitations of the methods are discussed as well as their accuracy over ranges of frequency, damping and loading specification. As a direct application and comparison of the two methods, an analysis of the support system for the primary mirror of the Space Infrared Telescope Facility (SIRTF) has been performed. In addition, a method for the evaluation of the critical damping in a single-degree-of-freedom structure is demonstrated.
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| 53 |
Frequency response computation for complex structures with damping and acoustic fluidKim, Chang-wan, 1969- 01 August 2011 (has links)
Not available / text
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| 54 |
Models for chemical processes : activated dynamics across stochastic potentialsShepherd, Tricia D. 05 1900 (has links)
No description available.
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| 55 |
On the dynamics of three systems involving tubular beams conveying fluidLuu, T. Phuong. January 1983 (has links)
No description available.
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| 56 |
Linear stability of coaxial jets with application to aeroacousticsPerrault-Joncas, Dominique C. January 2008 (has links)
Motivated by a practical interest in noise generated by turbofan engine, this thesis studies the stability of parallel coaxial jets with velocity and temperature profiles characteristic of the exhaust region of the engine. Because the bypass stream mixes with both the exhaust and the ambient air, these profiles contain thin layers in which the velocity and temperature may vary rapidly. As a consequence, multiple instability modes are possible. In accordance with Rayleigh's theorem for axisymmetric incompressible shear flows, it follows that there are three possible modes, only two of which are unstable. To complement the study of parallel flow stability, this thesis also includes the derivation of the amplitude evolution equation for slowly varying axisymmetric incompressible flows.
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| 57 |
A real-time near-optimal guidance approach for launch vehiclesLeung, Martin S. K. 05 1900 (has links)
No description available.
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| 58 |
A unified computational fluid dynamics-aeroacoustics analysis of high speed propellerLim, Teck-Bin 05 1900 (has links)
No description available.
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| 59 |
Stability of elastically tailored rotor bladesFulton, Mark V. 05 1900 (has links)
No description available.
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| 60 |
Development of a solution adaptive cartesian-grid solver for 2-D thermochemical nonequilibrium flowsTu, Shuangzhang 12 1900 (has links)
No description available.
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