In this paper, model predictive control (MPC) is proposed for single-phase electric springs (ESs) with the help of existing δ control, which realized by controlling instantaneous phase angle predefined sinusoidal reference a certain controller. System modeling analyzed first to get differential forms state variables. The discrete-time space obtained through first-order approximation. Critical l...

Effects of temperature and percentage of organic modifier were studied on retention and selectivity in RP-HPLC using solvation parameter model. The system constants were determined by multiple linear regression analysis from experimental values in the retention factor for a group of different solutes with known descriptors by computer using the program SPSS/PC. The experimental results showed t...

Abstract In 1995, Hadley formulated an elegant effective-index model to describe the formation of transverse modes in optical cavities (Hadley 1995 Opt. Lett. 20 1483–5). We apply this Fabry–Perot and discuss its limitations, using well-known paraxial solutions these as reference. also introduce a new model, which we call phase-plate that has less limitations yields correct first-order correcti...

In present paper, dynamic behavior and control of a fluidized bed reactor for polyethylene production has been considered. A double active sites model for Ziegler-Natta catalysts is used for simulation of polymerization reaction. Hydrodynamic behavior of the bed is modeled using a two phase model including bubble and emulsion phases in which bubble phase has plug flow pattern with different...

In the present study, numerical study of Al2O3-water nanofluid flow in different coiled wire inserted tubes are performed to investigate the effects of inserting coiled wires in tubes on the fluid dynamic and heat transfer performance ofv nanofluids. The numerical simulations of nanofluids are performed using two phase mixture model. The flow regime and the wall boundary conditions are assumed ...