Engr. Professor Oluwafemi Ayodeji Olugboji

Thursday 25th November 2021

 Methods of reconstructing the form of a pressure pulse at the site of the event causing it was developed using digital filtering and inverse techniques. These were tested initially using computer-modeled pulse propagation and subsequently validated experimentally in both static and flowing air. It was found that the digital filter (deconvolution) methods-based technique gave generally better reconstruction of the event, but consistently overestimated its magnitude. On the other hand, the inverse technique also reconstructed the general shape of the pulse quite well, but consistently underestimated the pulse magnitude; hence, the two techniques might be used simultaneously.

Besides, the results obtained showed their suitability to reconstruct the form of pressure pulse propagating along a gas-filled pipeline from its source using both static and flowing air. An outline design for a practical monitor system based on this work has been developed. The principle of operation is set out and the principal components were identified from currently available commercial sources. Based on these components, it was established that the cost of a monitor unit would be small compared with either the budget for a new pipeline or the cost of a major leak. Furthermore, the power requirements were established and it was shown that a monitor unit might be powered by a conventional battery for more than a year. From the foregoing, it has been established that a monitoring system of the type described could be developed at a realistic price and used for a realistic time without maintenance so that commercial exploitation of the work is a realistic proposition.