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Full-Text Articles in Engineering
One-Dimensional Radial Flow Turbomachinery Performance Modeling, Robert John Pelton
One-Dimensional Radial Flow Turbomachinery Performance Modeling, Robert John Pelton
Theses and Dissertations
The Two-Element In Series (TEIS) and Two-Zone models have been used successfully for over twenty years to model test data for radial flow compressors and pumps. The models can also be used to predict the performance of new machines provided that the model inputs can be accurately specified. Unfortunately, use of the TEIS and Two-Zone models as a predictive tool has been limited because an accurate and broadly applicable method of predicting the modeling parameters, etaA, etaB, chi and d2p does not exist. Empirical models have been developed to predict the TEIS and Two-Zone modeling parameters based on a large …
Shear Modulus Degradation Of Liquefying Sand: Quantification And Modeling, Peter A. Olsen
Shear Modulus Degradation Of Liquefying Sand: Quantification And Modeling, Peter A. Olsen
Theses and Dissertations
A major concern for geotechnical engineers is the ability to predict how a soil will react to large ground motions produced by earthquakes. Of all the different types of soil, liquefiable soils present some of the greatest challenges. The ability to quantify the degradation of a soil's shear modulus as it undergoes liquefaction would help engineers design more reliably and economically. This thesis uses ground motions recorded by an array of downhole accelerometers on Port Island, Japan, during the 1995 Kobe Earthquake, to quantify the shear modulus of sand as it liquefies. It has been shown that the shear modulus …