Rans simulation of a radial compressor with supercritical CO2 fluid for external loss model development

Seong Gu Kim, Seong Kuk Cho, Jeong Ik Lee, Jekyoung Lee, Si Woo Lee, Yacine Addad, Jae Eun Cha

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    3 Scopus citations

    Abstract

    From the observation of previous experimental results, it wasrecognized that the amount of external losses at the external flowpaths can be substantial. Understanding the external lossmechanisms, and reducing the external losses are crucial to thedesign of a high performance S-CO2 compressor. Therefore, thisstudy first focused on verifying the existing external loss modelsby estimating the internal loss accurately through a high fidelityCFD calculation and then substituting from the total losses. Byanalyzing the CFD result and energy balance data obtained fromthe experiment, the authors are suggesting the best combinationof the external loss models for the S-CO2 compressor. This isfollowed by the investigation of the condensation effect in theimpeller by utilizing a two-phase VOF model with metastableproperties. As a result, it is re-confirmed that there is a negligibleamount of condensation effect.

    Original languageBritish English
    Title of host publicationOil and Gas Applications; Supercritical CO2 Power Cycles; Wind Energy
    DOIs
    StatePublished - 2018
    EventASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition, GT 2018 - Oslo, Norway
    Duration: 11 Jun 201815 Jun 2018

    Publication series

    NameProceedings of the ASME Turbo Expo
    Volume9

    Conference

    ConferenceASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition, GT 2018
    Country/TerritoryNorway
    CityOslo
    Period11/06/1815/06/18

    Keywords

    • CFD
    • Design of S-CO compressor
    • External loss of turbomachinery
    • Metastable properties
    • Supercritical CO

    Fingerprint

    Dive into the research topics of 'Rans simulation of a radial compressor with supercritical CO2 fluid for external loss model development'. Together they form a unique fingerprint.

    Cite this