Abstract: An experimental and theoretical study has been made on chemical nonequilibrium flows in a supersonic nozzle for a mixture of dissociated gases and inert diluent. In the calculations, four ...

Abstract: Wear tests on the main bearings of 8.5 inch XHP 3 rock bits were performed, from which it is concluded that the way to improve the drilling effectiveness for the rock bits is to set ...

Abstract: A previous study of an indirect fired air turbine cogeneration system has been extended to include the concept of reheat. The effects of the number of reheat stages and cycle pressure drops ...

Abstract: In this paper we will give a wear analysis and a life estimation of the XHP series Rock bit bearing system with the three-body abrasive wear equation developed by the authors. The result ...

Abstract: The optimal control problem of a linear distributed parameter system is studied by employing the technique of shifted Legendre polynomial functions. A partial differential equation, which represents ...

Abstract: A method of model reduction for reducing a higher order transfer function to its lower order model is developed based on the shifted Legendre function approximation. The expansion coefficients ...

Abstract: A linear time-delay state equation is solved by the proposed shifted Legendre polynomials method. The parameter identification of such a system with time delay is also studied. The system is ...

Abstract: AbstractCool roofs and green roofs are two popular methods to mitigate the urban heat island and improve urban climates. The effectiveness of different urban heat island mitigation strategies in the summer of 2013 in the ...

Abstract: This study presents the electrical resistivity responses of saturated cement pastes undergoing cyclic freeze-thaw (F-T) action. An ordinary cement paste (OPC) and a blended paste (CS) containing ground granulated blast-furnace ...