الفهرس 
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Abstract
Sound and Vibration problems in Oil and Gas industry have been a major concern in the last decade. There is a need to solve performance problems caused by fluid machines in pipeline networks. Fluid Machines such as compressors and pumps produce pressure pulsations. These pulsations turn into shaking forces, which in turn excite vibrations in the connected piping system. High vibrations beyond the endurance limit of the material may cause damage to pipes, supports, and equipment. Moreover, if the source pulsation frequency coincides with one of the natural frequencies of the piping network, the network will incorporate resonance and consequently vibrations will be magnified. This might cause a damage to the foundation if the vibrations are not well controlled.
In this thesis, the indirect multi-load source characterization technique, commonly used to characterize internal combustion engine noise, is applied to characterize the acoustics of a reciprocating compressor and a screw compressor working at different operating conditions. The source characteristics are described by the source strength and the source impedance in the frequency domain. A linearity test for each source is carried out. If the source is linear, the two-port theory is valid and can be applied to predict the pressure pulsation at any given point in the system using the measured source data. The two-port technique is utilized to model the receiving system where the network can be divided into elements; each is described by a transfer matrix.
For the reciprocating compressor case, a pilot plant consists of pipes, bends and terminated by a vessel is constructed. The pressure pulsations are measured in different positions inside the network for two cases and are compared to simulations. One of these cases involves a pulsation suppression device that is designed according to the standards to attenuate the pressure pulsations in the pipeline network.
Keywords: Multi-load method - Source characterization - Linear source data - Piping vibration control.