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 8 of 8 for “"Tangential Strain"”.
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Surface Strain Measurement for Non-Intrusive Internal Pressure Evaluation of a Cannon
… is highest. An alternative, non-intrusive strain measurement method is introduced and discussed in the present work. This focuses on determining the feasibility and accuracy of relating tangential strain along the sidewall of a gun barrel to the drastic internal pressure rise created during …
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LARGE EDDY SIMULATION OF TURBULENT HYDROGEN FLAMES
… diffusion and flame stretch, with emphasis on tangential strain rate. The results show that these effects strongly influence flame structure, local reactivity, and stability, especially in lean premixed hydrogen–air mixtures. Their interaction leads to deviations from classical combustion …
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Turbulent flame propagation characteristics of high hydrogen content fuels
… are used to calculate flame curvatures and tangential strain rates. Statistics of these two quantities are calculated both over the entire flame surface and also conditioned at the leading points of the flames. Results presented do not support the arguments made in the development of the …
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Fundamental studies of flame propagation in lean-burn natural gas engines
… is also considered. FSD is influenced by tangential strain rate and flame displacement speed. Surface averaged tangential strain rate is found to scale linearly with <em>Ka.</em> The effects of <em>Ka</em> on flame displacement speed are modeled using a Probability Density Function (PDF) …
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Finite element modelling of fatigue crack growth in multi-layered architectures
… Tip Opening Displacement estimates, the maximum tangential strain criterion and automatic step by step extensions to account for crack growth. The analysis of forecasted paths for deflected and bifurcated cracks showed the tendency of the crack to grow parallel to the layers orientation within …
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Application of Crossed-Plane Tomography and Stereo Particle Image Velocimetry for Three-Dimensional Analysis of Premixed Turbulent Flames
… to high values of curvature and extensive tangential strain.
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Distributed acoustic sensing: modelling, full waveform inversion, and its use in seismic monitoring
… maximize the potential of DAS which only samples tangential strain, and is therefore a single component sensor, fibers are often shaped to improve their wavefield sampling. In this thesis I propose a robust method for simulating DAS data from arbitrarily shaped fibers, that couples a geometric …
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Turbulent partially premixed combustion: DNS analysis and RANS simulation
… change from aligning with the most compressive strain to aligning with the most extensive one in regions of intensive heat release. This alignment change creates negative normal strain rate which can result in negative surface averaged tangential strain rate. The partial premixing affects the …