Global ETD Search
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Showing 1 to 13 of 13 for “"Empirical formulas"”.
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Application of Kalman filtering in computer relaying of power systems
… noise signals was quantitatively studied. Empirical formulas that describe the random nature of the noise based on the probability of fault location and the frequency of occurrence of the different types of faults are given. These empirical formulas offer the possibility of developing other …
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Three-Dimensional Numerical Modeling Of Multiple-Sized Sediment Transport Modeling Under Current And Waves
… and waves on bed shear stresses. Meanwhile, empirical formulas for bed-load transport capacity, suspended-load transport capacity, and near-bed suspended-load concentration under current and waves are established for multiple-sized sediments. These formulas are used to close the sediment …
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Formulation of a Multi-Disciplinary Design Optimization of Containerships
… of a geometric module and choosing suitable empirical formulas for performance evaluation are also major issues of the project.
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Designing for upper seam stability in multi-seam mining
… preliminary evaluation using rules of thumb and empirical formulas developed from statistical analyses. Quantitative methods involve more detailed stress and strain computations based on quantified interaction mechanisms. These mechanisms include trough subsidence, load transfer, pressure arch, …
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Size reduction characteristics of an experimental swing hammermill
… to impact. Rittingers’ and Kicks’ laws are empirical formulas which do not make an attempt to resolve the forces as applied to grinding into their component parts. Possibly the application of the component forces as applied to impact grinding would give a key to the multiple factors …
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Characterization of heat transfer rates in supercritical ethanol for micro-rocket engine regenerative cooling
… design. It was also found that established empirical formulas provided poor correlation to experimental data but that one of these equations suitably modified, provided excellent correlation at 300atm for a restricted range of conditions.
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Performance monitoring and numerical modelling of a deep circular excavation
… of wall deflections and ground movements on empirical data. Due to the limited number of case studies on circular excavations it is nearly impossible to find comparable projects under similar conditions. Therefore designers have to adopt conservative approaches, which predict larger ground …
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Wind-induced dispersion of building exhaust in an urban environment : a full-scale and wind-tunnel study
… full-scale data. For the purpose of evaluating empirical formulas and wind tunnel modeling techniques, four field tests on the roof of the Hall Building of Concordia University and a wind tunnel study have been carried out. The influence of various parameters on the dispersion process were …
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The Effect of Management on Erosion of Civil War Battlefield Earthworks
… secondary objective was to determine how several empirical formulas (e.g. Universal Soil Loss Equation) and one field estimate (e.g. erosion pins) compared soil erosion trends for the 5 treatments. A third objective of this study was to gather information regarding the soil development which has …
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Modeling and control of quartz crystal operated in liquid for bio-sensing application
… frame work 4.0 and all available theoretical and empirical formulas and program data base will include the data for QCM sensors and resonance frequencies, this program will include all cases needed to be studied for the present work (bio sensing). Many sensors can be used for QCM, the present work …
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Model development based on discrete particle simulations of partially- and fully-saturated granular media
… individual particles. At the other extreme, empirical formulas based on dimensional analysis and continuum models are convenient to be applied to large scale problems, but calibrations may be needed. In this thesis, DEM simulations are carried out as virtual experiments to study the …
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Large eddy simulation of the upper atmospheric surface layer
… constant and the Monin-Obukhov similarity formulas can be derived from the resolved-scale turbulence in the upper surface layer (USL). Only an ideal geometry, flat but rough surface, is treated. Horizontal homogeneity of all dependent mean variables is assumed except the mean pressure, …