Fluctuating Pressures in Pump Diffuser and Collector Scrolls, Part 1
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Fluctuating Pressures in Pump Diffuser and Collector Scrolls, Part 1

Fluctuating Pressures in Pump Diffuser and Collector Scrolls, Part 1


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About the Book

The cracking of scroll liners on the SSME High Pressure Fuel Turbo Pump (HPFTP) on hot gas engine test firings has prompted a study into the nature of pressure fluctuations in centrifugal pump states. The amplitudes of these fluctuations and where they originate in the pump stage are quantified. To accomplish this, a test program was conducted to map the pressure pulsation activity in a centrifugal pump stage. This stage is based on typical commercial (or generic) pump design practice and not the specialized design of the HPFTP. Measurements made in the various elements comprising the stage indicate that pulsation activity is dominated by synchronous related phenomena. Pulsation amplitudes measured in the scroll are low, on the order of 2 to 7 percent of the impeller exit tip speed velocity head. Significant non-sychronous pressure fluctuations occur at low flow, and while of interest to commercial pump designers, have little meaning to the HPFTP experience. Results obtained with the generic components do provide insights into possible pulsation related scroll failures on the HPFTP, and provide a basis for further study. Sloteman, Donald P. Unspecified Center NASA-CR-183781, NAS 1.26:183781 NAS8-36223...


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Product Details
  • ISBN-13: 9781724218773
  • Publisher: Createspace Independent Publishing Platform
  • Publisher Imprint: Createspace Independent Publishing Platform
  • Height: 279 mm
  • No of Pages: 480
  • Spine Width: 25 mm
  • Width: 216 mm
  • ISBN-10: 1724218778
  • Publisher Date: 24 Jul 2018
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 1102 gr


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