Wave motion in pipe bends is much more complicated than that straight pipes, thereby changing considerably the propagation characteristics of guided waves pipes with bends. Therefore, a better understanding how propagate essential for inspecting pipelines The interaction between bend and most used non-dispersive torsional mode at low frequency small-bore studied this paper. Experiments are cond...

Advanced x-ray radiography machines require that multiple electron beam pulses be delivered to x-ray converter targets over several lines of sight. This can be accomplished using a single accelerator by using a fast kicker to deliver the electron beam pulses to several beamlines. This type of radiography machine requires transport lines with several large achromatic bends in the individual tran...

We study a fully developed creeping flow of nematic liquid crystals in curved pipe with circular cross-section. A special limit zero Deborah number and an infinite Ericksen is considered, so the orientation director are described by transversely isotropic fluid (TIF) model. Analytical solutions obtained expanding governing equation small curvature ?, defined as ratio radius to bend. show that p...

The swirling secondary flow in curved pipes is studied three-space dimensions using a weakly compressible Smoothed Particle Hydrodynamics (WCSPH) formulation coupled to new non-reflecting outflow boundary conditions. A large-eddy simulation (LES) model for turbulence benchmarked with existing experimental data. After validation of the present against results 90 grades pipe bend, detailed numeri...

Fluid flow models developed for pipe flows in gasoline port fuel injection system with different number of injectors working under steady state condition was simulated this study using Flow Master Software. Using existing equations, theoretical analysis were computed the same parameters and results obtained each parameter both simulation approach compared accordingly. The that had not shown muc...

It is now well-known that chaotic advection in laminar flow significantly impacts scalar transport – heat, mass and residence time distribution (RTD). In context of twisted pipes, such phenomena are relevant to a wide range of applications which demand rapid heat and mass transport ranging from microfluidics and continuous chemical processing to bioreactors. A general theoretical framework link...

In the downhole operation of horizontal Wells, pipe string is subjected to combined action many kinds loads. The may bend sinusoidal or spiral under axial compressive stress, which will also increase friction between and wellbore wall. Because existence friction, milling, salvage, unstuck, sand other construction bring adverse effects. This paper describes characteristics well in fishing, washi...