In the present study, heat transfer and entropy analysis for flow through a pipe system is considered. The Reynolds number and the pipe wall temperature effects on entropy distribution and total entropy generation in the pipe are investigated. Numerical scheme employing a control volume approach is introduced when solving the governing equations. Steel is selected as pipe material, while water ...

The flow of a viscous fluid along a curving pipe of fixed radius is driven by a pressure gradient. For a generally curving pipe it is the fluid flux which is constant along the pipe and so I correct fluid flow solutions of Dean (1928) and Topakoglu (1967) which assume constant pressure gradient. When the pipe is straight, the fluid adopts the parabolic velocity profile of Poiseuille flow; the s...

The explosive viscous liquid becomes inject to warhead by discharge system. The injection device is consisted of a piston to move down and leads the viscous fluid through the cylindrical pipe towards the end of the duct. Then the viscous fluid leads into a convergent path that will be injected to the warhead or other injection equipment. In this project, the path of viscous fluid flow is divide...

This paper presents an exact analytical model for optimizing stability of thin-walled, composite, functionally graded pipes conveying fluid. The critical flow velocity at which divergence occurs is maximized for a specified total structural mass in order to ensure the economic feasibility of the attained optimum designs. The composition of the material of construction is optimized by defining t...

This study presents a novel approach for addressing dynamical characteristics of fluid conveying axially functionally graded pipes. The variation material properties the pipe along axial direction is taken into account according to power-law function. Owing unified expression displacement field, developed model can be recast classical Euler – Bernoulli and Timoshenko tube models as well newly h...

In recent years, with the increasing energy consumption and carbon emissions, people are paying more attention to related measures for conservation emission reduction. As an important conveying component of HVAC system, pipe network system plays function distributing fluid medium. However, a large part resistance loss is often generated during this transportation process, local pressure caused ...

Annulus pipe conveying fluids have many practical applications, such as hydraulic control lines and aircraft fuel lines. In some these tubes are exposed to high speeds. Normally, this leads a vibration effect which may be of catastrophic nature. The phenomenon is not only driven by the centrifugal forces, but an important role played also Coriolis forces. Many theoretical approaches exist for s...

Abstract In this study, a coupling model of fluid-conveying pipes made functionally graded materials (FGMs) with NiTiNOL-steel (NiTi-ST) for vibration absorption is investigated. The responses the FGM pipe NiTi-ST are studied by Galerkin truncation method (GTM) and harmonic balance (HBM). solutions numerical results consistent. Also, linearized stability structure determined. effects parameters...