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    Three-Dimensional Modeling for Wet Compression in a Single Stage Compressor Including Liquid Particle Erosion Analysis

    Source: Journal of Engineering for Gas Turbines and Power:;2011:;volume( 133 ):;issue: 001::page 12001
    Author:
    Jobaidur R. Khan
    ,
    Ting Wang
    DOI: 10.1115/1.4001828
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Gas turbine inlet fog/overspray cooling is considered as a simple and effective method to increase power output. To help understand the water mist transport in the compressor flow passage, this study conducts a 3D computational simulation of wet compression in a single rotor-stator compressor stage using the commercial code FLUENT . A sliding mesh scheme is used to simulate the stator-rotor interaction in a rotating frame. Eulerian–Lagrangian method is used to calculate the continuous phase and track the discrete (droplet) phase. Models to simulate droplet breakup and coalescence are incorporated to take into consideration the effect of local acceleration and deceleration on water droplet dynamics. Analysis on the droplet history (trajectory and size) with stochastic tracking is employed to interpret the mechanism of droplet dynamics under the influence of local turbulence, acceleration, diffusion, and body forces. A liquid-droplet erosion model is included. The sensitivity of the turbulence models on the results is conducted by employing six different turbulence models and four different time constants. The result shows that the local thermal equilibrium is not always achieved due to short residence time and high value of latent heat of water. Local pressure gradients in both the rotor and stator flow passages drive up the droplet slip velocity during compression. The erosion model predicts that the most eroded area occurs in the leading edge and one spot of the trailing edge of the rotor suction side.
    keyword(s): Pressure , Flow (Dynamics) , Temperature , Particulate matter , Turbulence , Compressors , Erosion , Rotors , Compression , Stators , Water , Suction , Dynamics (Mechanics) , Force , Gas turbines , Equations , Blades AND Simulation ,
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      Three-Dimensional Modeling for Wet Compression in a Single Stage Compressor Including Liquid Particle Erosion Analysis

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/146118
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    • Journal of Engineering for Gas Turbines and Power

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    contributor authorJobaidur R. Khan
    contributor authorTing Wang
    date accessioned2017-05-09T00:43:51Z
    date available2017-05-09T00:43:51Z
    date copyrightJanuary, 2011
    date issued2011
    identifier issn1528-8919
    identifier otherJETPEZ-27150#012001_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/146118
    description abstractGas turbine inlet fog/overspray cooling is considered as a simple and effective method to increase power output. To help understand the water mist transport in the compressor flow passage, this study conducts a 3D computational simulation of wet compression in a single rotor-stator compressor stage using the commercial code FLUENT . A sliding mesh scheme is used to simulate the stator-rotor interaction in a rotating frame. Eulerian–Lagrangian method is used to calculate the continuous phase and track the discrete (droplet) phase. Models to simulate droplet breakup and coalescence are incorporated to take into consideration the effect of local acceleration and deceleration on water droplet dynamics. Analysis on the droplet history (trajectory and size) with stochastic tracking is employed to interpret the mechanism of droplet dynamics under the influence of local turbulence, acceleration, diffusion, and body forces. A liquid-droplet erosion model is included. The sensitivity of the turbulence models on the results is conducted by employing six different turbulence models and four different time constants. The result shows that the local thermal equilibrium is not always achieved due to short residence time and high value of latent heat of water. Local pressure gradients in both the rotor and stator flow passages drive up the droplet slip velocity during compression. The erosion model predicts that the most eroded area occurs in the leading edge and one spot of the trailing edge of the rotor suction side.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleThree-Dimensional Modeling for Wet Compression in a Single Stage Compressor Including Liquid Particle Erosion Analysis
    typeJournal Paper
    journal volume133
    journal issue1
    journal titleJournal of Engineering for Gas Turbines and Power
    identifier doi10.1115/1.4001828
    journal fristpage12001
    identifier eissn0742-4795
    keywordsPressure
    keywordsFlow (Dynamics)
    keywordsTemperature
    keywordsParticulate matter
    keywordsTurbulence
    keywordsCompressors
    keywordsErosion
    keywordsRotors
    keywordsCompression
    keywordsStators
    keywordsWater
    keywordsSuction
    keywordsDynamics (Mechanics)
    keywordsForce
    keywordsGas turbines
    keywordsEquations
    keywordsBlades AND Simulation
    treeJournal of Engineering for Gas Turbines and Power:;2011:;volume( 133 ):;issue: 001
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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