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Full-Text Articles in Engineering

An Experiment To Measure Transport Parameters In A Saturated Heterogeneous Scaled Medium, Logan Mcinnis Apr 1995

An Experiment To Measure Transport Parameters In A Saturated Heterogeneous Scaled Medium, Logan Mcinnis

Mathematics, Engineering and Computer Science Undergraduate Theses

One of the major difficulties in groundwater research is determining an appropriate scale at which to conduct an experiment. Because of a phenomenon called the scale effect, measured values of parameters in heterogeneous media can vary with the scale of measurement. The objective of this experiment was to measure the parameters of dispersivity and velocity at different length scales, to see if the measured values would converge to a limit at some scale of measurement. A good deal of research has been conducted on the scale effect in heterogeneous media, but this phenomenon is still not totally understood. The heterogeneous ...


A Computer Model For Airfoils With Moving Surface Boundary-Layer Control, Jacob Kimball Apr 1995

A Computer Model For Airfoils With Moving Surface Boundary-Layer Control, Jacob Kimball

Mathematics, Engineering and Computer Science Undergraduate Theses

One method that is used to enhance airplane safety and performance is to use moving surfaces on wings to increase lift. A modification of the panel method is used to model airfoils which incorporate moving surface boundary-layer control. The modification is to apply a vortex sheet of constant strength over the moving portions of the airfoil. The model is demonstrated on an airfoil that has a rotating cylinder on the leading edge. The modified panel method was programmed in Mathematica (Wolfram Research Incorporated). The results generated by the Mathematica program are displayed graphically and show an increase in lift for ...