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Full-Text Articles in Mechanical Engineering
Numerical Analysis Of An Electrical Transformer With Fins And Horizontal Pins, Sean Ferneyhough
Numerical Analysis Of An Electrical Transformer With Fins And Horizontal Pins, Sean Ferneyhough
UNLV Theses, Dissertations, Professional Papers, and Capstones
Three-dimensional numerical simulations are run on a cylindrical electrical transformer that is generating heat in order to study the resulting natural convection that is driven by density variation. The transformer generates a constant heat flux and is incased in a sleeve with radial fins. At first, the sleeve is analyzed without fins and compared to an analytical solution in order to validate the numerical simulations. Next, fins are added to the sleeve in order to maximize the heat transfer from the transformer. Heat transfer from the sleeve per number of fins is to be determined. Small pins are then added …
Thermomagnetic Convective Cooling Of Hall Effect Thruster, Elizabeth M. Vanheusden
Thermomagnetic Convective Cooling Of Hall Effect Thruster, Elizabeth M. Vanheusden
Dissertations, Master's Theses and Master's Reports
This work proposes and shows that thermomagnetic convection could be used in zero gravity to cool components of a Hall-effect thruster. A ferrofluid cavity was develop in the thermal and geometric model of a Hall-effect thruster. Simulations show that with an Ionic Liquid Ferrofluid after two minutes of thruster operations thermomagnetic convection occurs and in zero gravity will produce a larger velocity then natural convection that occurs in earth gravity. However, experiments did not result in heat transfer enhancement due to the limitation of the ferrofluid. Replacement of the Ferrotec EFH1 dispersant with dodecylbenzene did not result in Ionic Liquid …