Variable Flow Resistance With Adjustable Multipenetration Orifice Plates in Series

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Full-scale water flow tests were performed to determine the feasibility of a variable resistance orificing scheme for PWR Core 2. A low temperature, low pressure loop was used, and three, two, and one multi-hole and multi-slot orifice plates in series were tested. For the three and two plates in series, thc range in flow repenetrations were aligned to the condition of maximum misaligament. Flow characteristics of a single multihole and multi-slut plate were also studied. Tests performed on the multi-hole and multi- slut orifices in series showed that a considerable renge of flow resisttions is varied. For the area ratio, ... continued below

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Grochowski, F. A. October 17, 1958.

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Description

Full-scale water flow tests were performed to determine the feasibility of a variable resistance orificing scheme for PWR Core 2. A low temperature, low pressure loop was used, and three, two, and one multi-hole and multi-slot orifice plates in series were tested. For the three and two plates in series, thc range in flow repenetrations were aligned to the condition of maximum misaligament. Flow characteristics of a single multihole and multi-slut plate were also studied. Tests performed on the multi-hole and multi- slut orifices in series showed that a considerable renge of flow resisttions is varied. For the area ratio, which gave the 6 in the case of three multi-hole plates and about 1 to 4 for three multislot plates. Fur the multi-hole geometry tested, the incrcase in flow resistance with angular misalignment was very high and occurred over an angular rotation of the center plate of 15 deg . Employing angular slots allowed greater freedom in the choice of the range of angular rotation to go from the minimum to the maximum flow resistance conditions. For this reason the angular slot configuration will be considered for further study for application in PWR Core 2. (auth)

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  • Other Information: Orig. Receipt Date: 31-DEC-59

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  • Report No.: WAPD-PWR-(RD2)-266
  • Grant Number: None
  • DOI: 10.2172/4237901 | External Link
  • Office of Scientific & Technical Information Report Number: 4237901
  • Archival Resource Key: ark:/67531/metadc1021911

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Creation Date

  • October 17, 1958

Added to The UNT Digital Library

  • Oct. 15, 2017, 10:09 p.m.

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  • Jan. 17, 2018, 2:24 p.m.

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Grochowski, F. A. Variable Flow Resistance With Adjustable Multipenetration Orifice Plates in Series, report, October 17, 1958; Pittsburgh, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc1021911/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.