Pipes are widely used in many industrial and mechanical applications and devices. Although there are many different constructions according to the specific application and device, these can show helical pattern, such as spiral pipes, wire-reinforced pipes/shells, spring-suspension, and so on. Theoretical modelling of wave propagation provides a prediction about the dynamic behavior, and it is f...

In this tutorial the fundamentals of non-boiling heat transfer in two-phase twocomponent gas-liquid flow in pipes are presented. The techniques used for the determination of the different gas-liquid flow patterns (flow regimes) in vertical, horizontal, and inclined pipes are reviewed. The validity and limitations of the numerous heat transfer correlations that have been published in the literat...

We focus on the detection and classification of sewer pipe junctions during the initial survey stage of a 'soft' lnsituform lining process. Estimates are obtained of the diameter and orientation of interconnecting lateral pipes: smaller diameter pipes that join the main sewer from the side. These estimates are compared to a set of likely values of each and the member of this set closest to the ...

the intension in this work is to investigate the effect of different bending manifold pipes on engine performance for different engine speed. Power, Torque, and BSFC were calculated and presented to show the effect of varying bending pipes angles on them for all cases considered. A special program used to carry out the calculations. A simulation model for 4-cylinders spark ignition engine with ...

Nondestructive evaluation of the gas pipeline system is most commonly performed using magnetic flux leakage (MF L) techniques. A major segment of this network employs seamless pipes. The data obtained from MFL inspection of seamless pipes is contaminated by various sources of noise; including seamless pipe noise due to material properties of the pipe, lift -off varia tion of MFL sensor due to m...

Three zero-order swales, each with a contributing drainage area of about 1 ha, were instrumented to measure pipeflows within the Caspar Creek Experimental Watershed in northwestern California, USA. After two winters of data collection, the second-growth forest on two of the swales was clearcut logged. The third swale remained as an uncut control. After logging, peak pipeflow was about 3.7 times...

Most current XQuery implementations require that all XML data reside in memory in one form or another before they start processing the data. This is unacceptable for large XML documents. The only event-based techniques that do not require the materialization of all data in memory are based on transducers. Transducers use SAX events to evaluate XPath queries using finite state machines. SAX allo...

Autonomous vehicles will not be driven by a human being. The missing of the human being will make the vehicles less inspected because a human being often listens to the engine and its sounds. A passenger in an autonomous vehicle usually does other things and even sleeps, so the human inspection on the engine and on the pipes system will not be effective. This paper suggests a system that alerts...