EROSION PREDICTION NEAR A STAGNATION POINT RESULTING FROM ENVIRONMENTAL SOLID PARTICLES

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Predicting the erosion that results from a gas-solid particle flow in coal energy conversion systems is crucial for the successful operation of coal gasification, magnetohydrodynamic power, and coal-fired turbine facilities. In this study the coupled gas-particle momentum equations are analytically solved to determine the particle trajectories near a plane stagnation point. The momentum equilibration parameter, which is a physical parameter measuring a particle's momentum, is found to be the unique criterion for predicting particle trajectories. It is shown that values of this parameter less than one-fourth identify particles that never impact with a wall. The closed-form solution obtained is used ... continued below

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28 p.

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Laitone, J. November 1, 1977.

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Predicting the erosion that results from a gas-solid particle flow in coal energy conversion systems is crucial for the successful operation of coal gasification, magnetohydrodynamic power, and coal-fired turbine facilities. In this study the coupled gas-particle momentum equations are analytically solved to determine the particle trajectories near a plane stagnation point. The momentum equilibration parameter, which is a physical parameter measuring a particle's momentum, is found to be the unique criterion for predicting particle trajectories. It is shown that values of this parameter less than one-fourth identify particles that never impact with a wall. The closed-form solution obtained is used to predict the quantity of material removed from a wall as well as the location of erosion along the wall. The maximum erosion is calculated to occur for the momentum equilibration parameter taking a value of 2.3. The erosion rate is found to be proportional to the particle velocity raised to the exponent of 3.8.

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28 p.

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  • Journal Name: Applied Physics

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  • Report No.: LBL-6990
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 1004883
  • Archival Resource Key: ark:/67531/metadc837517

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Office of Scientific & Technical Information Technical Reports

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  • November 1, 1977

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • July 26, 2016, 5:43 p.m.

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Laitone, J. EROSION PREDICTION NEAR A STAGNATION POINT RESULTING FROM ENVIRONMENTAL SOLID PARTICLES, article, November 1, 1977; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc837517/: accessed November 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.