To achieve efficient recovery of subsurface energy resources, a suitable trajectory needs to be identified for the production well. In this study, new approach is presented automated identification optimum well trajectories in heterogeneous oil/gas reservoirs. The optimisation procedures are as follows. First, productivity potential map generated based on site characterisation data reservoir (w...

The typical installation of a heat exchange device usually involves a flow contraction at the core entrance and a flow expansion at the core exit. Repeated flow Contraction and expansion are experienced in the flow passages of some compact heat exchangers. The latter refers to the flow passages in the plate-fin type with louvered fins or stripped fins and in the tubular type with dimpled-circul...

The present study concentrates on optimization and the effect of machining parameters delamination that occurs during drilling operation pure glass fiber-reinforced polymer (GFRP) composites added GFRP which were developed for resistance to erosion wear. Contribution was investigated by using Taguchi method analysis variance (ANOVA). Relationship between modelled response surface methodology. C...

Today, the inverters used in telecommunic-ation sector are controlled by PWM (Palse Width Modulation ) in this control technical the need of wide range of entrance and exit fılters makes the inverters highly costed. In order to get rid of these problems the fuzzy logic controlled inverters are suggested in this study the fuzzy logic control of inverters used in telecommunication is described an...

The problem of low-frequency sound propagation in slowly varying ducts is systematically analyzed as a perturbation problem of slow variation. Webster’s horn equation and variants in bent ducts, in ducts with nonuniform soundspeed, and in ducts with irrotational mean flow, with and without lining, are derived, and the entrance/exit plane boundary layer is given. It is shown why a varying lined ...

The Maze Generation problem has been presented as a benchmark for the Second Answer Set Programming Competition. We prove that the problem is NP–complete and identify relevant classes of unsatisfiable instances. The Maze Generation (MG) problem has been presented as a benchmark for the Second Answer Set Programming (ASP) Competition1. The problem has been placed in the NP category, which contai...

Small-world (SW) networks have been identified in many different fields. Topological coefficients like the clustering coefficient and the characteristic path length have been used in the past for a qualitative characterization of these networks. Here a dynamical approach is used to characterize the small-world phenomenon. Using the β−model, a coupled map dynamical system is defined on the netwo...