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Anna Ekblom Johan Gullman-Strand's (KTH Sweeden) work on compressible pipe flow with friction and heat addition. The aim of the presented work was to compare existing theoretical analysis with experimental results in the feld of compressible pipe ow in a straight circular pipe with constant cross section area subjected to wall friction and heat addition. The equations describing pipe ow subjected to friction have been rederived. Two different models have been compared. The experiments were conducted on four pipes differing in length and friction factor.Quantities such as total inlet pressure, total inlet temperature, static pressure distribution along the pipe, venturi nozzle pressure difference, power added, outlet dynamic pressure distribution and outlet total temperature have been measured in order to determine the dependence on heat addition and friction. There was no apparent effect of heating on the flow eld though the input power was entirely transfered to the ow. The inuence of friction seems to have the predicted effect, since the achieved outlet Mach numbers were similar for all four pipes for similar input conditions. Inn contrast to the theoretical model of one-dimensional ow, the outlet Mach numbers were found to be larger than 1 for high enough driving pressure.
 
 
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Keywords

compressible  fanno  rayleigh  
 
 
 About This Document
 
 Subject Mechanical Engineering
 Category MS Thesis
 Views 4785
 Downloads 454
 Added 15-01-10
 Contributor   autocrawler
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