Wall y + strategy for modelling rotating annular flow using CFD

Andrew A. Davidson, Salim M. Salim

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)
    68 Downloads (Pure)

    Abstract

    A Strategy for modelling rotating annular flow within CFD is developed with the aid of the wall y + . The strategy will allow the pressure loss, and the effect any drilling tools has on this, to be investigated and analyzed at a reduced time and cost compared to more conventional methods. Five turbulence models were investigated and the k – ω model was found to be the most accurate for a wall y + of less than 5 due to the low Reynolds number found in these flow situations. The k – ε model performed least well, upon investigation of the turbulence models it was found that there was a direct link between the turbulent intensity found in the annulus and the performance in predicting pressure loss. The k – ε model was found to drastically over predict the turbulent kinetic energy for the mesh set up and thus gave inaccurate results regarding the pressure loss in the annulus. This paper suggests that a structured mesh with a y + < 5 and the k – ω turbulence model will provide sufficiently accurate data in the investigation of pressure loss in an annulus.

    Original languageEnglish
    Title of host publicationProceedings of the International MultiConference of Engineers and Computer Scientists 2018, IMECS 2018
    EditorsOscar Castillo, David Dagan Feng, A.M. Korsunsky, Craig Douglas, S. I. Ao
    PublisherNewswood Limited
    ISBN (Electronic)9789881404886
    Publication statusPublished - 1 Jan 2018
    Event2018 International MultiConference of Engineers and Computer Scientists, IMECS 2018 - Hong Kong, Hong Kong
    Duration: 14 Mar 201816 Mar 2018

    Publication series

    NameLecture Notes in Engineering and Computer Science
    Volume2
    ISSN (Print)2078-0958

    Conference

    Conference2018 International MultiConference of Engineers and Computer Scientists, IMECS 2018
    CountryHong Kong
    CityHong Kong
    Period14/03/1816/03/18

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  • Cite this

    Davidson, A. A., & Salim, S. M. (2018). Wall y + strategy for modelling rotating annular flow using CFD. In O. Castillo, D. D. Feng, A. M. Korsunsky, C. Douglas, & S. I. Ao (Eds.), Proceedings of the International MultiConference of Engineers and Computer Scientists 2018, IMECS 2018 (Lecture Notes in Engineering and Computer Science; Vol. 2). Newswood Limited.