MODELING STUDIES AND NUMERICAL ANALYSES OF COUPLED PDES SYSTEM IN ELECTROHYDRODYNAMICS by Yuzhou Sun Dr. Pengtao Sun, Examination Committee Chair Associate Professor of Mathematics University of Nevada, Las Vegas, USA Electrohydrodynamics (EHD) is the term used for the hydrodynamics coupled with electrostatics, whose governing equations consist of the electrostatic potential (Poisson) equation,...

Ignition and combustion of an initially spherical pocket of fuel in motion relative to a hot oxidizing atmosphere is studied. The model considers finite rate chemistry represented by an irreversible one-step reaction. Attention is focused on the development of the ignition process, which, in the end, typically leads to the establishment of a diffusion flame. For moderate values of a suitably de...

A mathematical model for thermal explosion in a combustible dusty gas containing fuel droplets with general Arrhenius reaction-rate laws, convective and radiative heat losses, and interphase heat exchange between gas and inert solid particles is investigated. The objective of the study is to examine the effects of interphase heat exchange between the gas and solid particles on i ignition of rea...

EcoBot I is a robot developed in the IAS Lab that uses Microbial Fuel Cells (MFC) as the ‘live engine’ and glucose as the fuel. This prototype robot employs no other form of conventional power supply and it proves the concept of autonomy whilst at the same time performing photo-taxis. Recent experiments conducted in our lab, employing two different techniques, have suggested that the power outp...

............................................................................................................. I ACKNOWLEDGEMENTS .................................................................................... II LIST OF PAPERS................................................................................................. III BACKGROUND.........................................................

This paper deals with the problem of controlling energy generation systems including fuel cells (FCs) and interleaved boost power converters. The proposed nonlinear adaptive controller is designed using sliding mode control (SMC) technique based on the system nonlinear model. The latter accounts for the boost converter large-signal dynamics as well as for the fuel-cell nonlinear characteristics...

The binary effect of pulverized fuel ash (PFA) and palm oil fuel ash (POFA) on heat of hydration of aerated concrete was studied. Three aerated concrete mixes were prepared, namely, concrete containing 100% ordinary Portland cement (control sample or Type I), binary concrete made from 50% POFA (Type II), and ternary concrete containing 30% POFA and 20% PFA (Type III). It is found that the tempe...

T R I B O L O G Y & L U B R I C A T I O N T E C H N O L O G Y W W W . S T L E . O R G wide range of approaches have been undertaken to determine how to reduce emissions from automotive engines. in a previous TLT article, the development of the homogeneous charge compression ignition (hCCi) engine was discussed. When used in place of a conventional gasoline engine, an hCCi engine can produce a 1...