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Articles 151 - 153 of 153
Full-Text Articles in Engineering
Use Of Natural Instability For Enhancement Of Flow Mixing In Annuli, Amirreza Seddighi
Use Of Natural Instability For Enhancement Of Flow Mixing In Annuli, Amirreza Seddighi
Electronic Thesis and Dissertation Repository
A technique has been proposed to increase flow mixing in annuli by means of vortex generation. Corrugations in the form of axisymmetric ribs are placed at the walls of annulus to modulate the axial flow which can potentially induce vortex instabilities. Unlike other vortex generation methods which suffer from relatively high pressure losses, this technique is expected to cause less pressure drop. Spectral algorithm based on Fourier and Chebyshev expansions has been used to study the stationary state and its stability. Due to the irregularities of the boundaries, the immersed boundary conditions (IBC) method is used to enforce the flow …
Granulation Of Biochar For Soil Amendment, Breanna H. M. Bowden-Green
Granulation Of Biochar For Soil Amendment, Breanna H. M. Bowden-Green
Electronic Thesis and Dissertation Repository
Biochar has shown potential as a soil amendment, but is a fine powder that is difficult to handle and would be blown away if applied to soils without modifications. Wet drum granulation of cornstalk biochar using binder solutions of hydroxypropyl methylcellulose was initially investigated, establishing that biochar could be granulated into a form that would be easier to handle and apply effectively to the soil. Biochars from three different feedstocks were then tested along with three binder solutions. The biochar granules were free flowing and relatively strong with a significant yield between a size range of 1 to 4 mm. …
Application Of Simultaneous Localization And Mapping Algorithms For Haptic Teleoperation Of Aerial Vehicles, Bandar Hulayyil Aldhafeeri
Application Of Simultaneous Localization And Mapping Algorithms For Haptic Teleoperation Of Aerial Vehicles, Bandar Hulayyil Aldhafeeri
Electronic Thesis and Dissertation Repository
In this thesis, a new type of haptic teleoperator system for remote control of Unmanned Aerial Vehicles (UAVs) has been developed, where the Simultaneous Localization and Mapping (SLAM) algorithms are implemented for the purpose of generating the haptic feedback. Specifically, the haptic feedback is provided to the human operator through interaction with artificial potential field built around the obstacles in the virtual environment which is located at the master site of the teleoperator system. The obstacles in the virtual environment replicate essential features of the actual remote environment where the UAV executes its tasks. The state of the virtual environment …