Inverse Transient Analysis (ITA) is a powerful approach for leak detection of pipelines. When the pipe transient flow is analyzed in frequency domain the ITA is called Inverse Frequency Response Analysis (IFRA). To implement an IFRA for leak detection, a transient state is initiated in the pipe by fast closure of the downstream end valve. Then, the pressure time history at the valve location is...

The phase shift between pressure and wall shear stress (WSS) has been associated with vascular diseases such as atherosclerosis aneurysms. present study aims to understand the effects of geometry flow properties on under stiff assumption, using an immersed-boundary-lattice-Boltzmann method. For pulsatile in a straight pipe, is known increase Womersley number, but independent speed (or Reynolds ...

Abstract. Erosion corrosion is a common problem that affects boiler tubes, particularly those in power plants and industrial settings where hard water abrasive particles are present the flow. These can cause physical erosion to surface of which then lead further corrosion. This type often accelerated by high temperatures pressures system, as well presence oxygen. The combination chemical attack...

The stability of the ow of an incompressible, viscous uid through a pipe of circular cross-section, curved about a central axis is investigated in a weakly nonlinear regime. A sinusoidal pressure gradient with zero mean is imposed, acting along the pipe. A WKBJ perturbation solution is constructed, taking into account the need for an inner solution in the vicinity of the outer bend, which is ob...

Ground-source heat pump (GSHP) utilizes the immense renewable storage capacity of the ground as a heat source or sink to provide space heating, cooling, and domestic hot water. GSHP systems are generally comprised of water source heat pumps and ground heat exchangers (GHX). Vertical closed-loop GHX is used predominantly in commercial and institutional applications. Closed loop GHX consists of a...