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    Fluid Flow Investigation through Small Turbodrill for Optimal Performance

    191952_93934_J_1_J_Mech_Eng_Research.pdf (5.664Mb)
    Access Status
    Open access
    Authors
    Mokaramian, Amir
    Rasouli, Vamegh
    Cavanough, Gary
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Mokaramian, Amir and Rasouli, Vamegh and Cavanough, Gary. 2013. Fluid Flow Investigation through Small Turbodrill for Optimal Performance. Mechanical Engineering Research. 3 (1): pp. 1-24.
    Source Title
    Mechanical Engineering Research
    DOI
    10.5539/mer.v3n1p1
    ISSN
    1927-0607
    Remarks

    This article is published under the Open Access publishing model and distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/ Please refer to the licence to obtain terms for any further reuse or distribution of this work.

    URI
    http://hdl.handle.net/20.500.11937/3804
    Collection
    • Curtin Research Publications
    Abstract

    Basic design methodology for a new small multistage Turbodrill (turbine down hole motor) optimized for small size Coiled Tube (CT) Turbodrilling system for deep hard rocks mineral exploration drilling is presented. Turbodrill is a type of axial turbomachinery which has multistage of stators and rotors. It converts the hydraulic power provided by the drilling fluid (pumped from surface) to mechanical power through turbine motor. For the first time, new small diameter (5-6 cm OD) water Turbodrill with high optimum rotation speed of higher than 2,000 revolutions per minute (rpm) were designed through comprehensive numerical simulation analyses. The results of numerical simulations (Computational Fluid Dynamics (CFD)) for turbodrill stage performance analysis with asymmetric blade’s profiles on stator and rotor, with different flow rates and rotation speeds are reported. This follows by Fluid-Structural Interaction (FSI) analyses for this small size turbodrill in which the finite element analyses of the stresses are performed based on the pressure distributions calculated from the CFD modeling. As a result, based on the sensitivity analysis, optimum operational and design parameters are proposed for gaining the required rotation speed and torque for hard rocks drilling.

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