Study on clogging mechanism of fibrous materials in a pump by experimental and computational approaches

H. Kudo, T. Kawahara, H. Kanai, Kazuyoshi Miyagawa, S. Saito, M. Isono, M. Nohmi, H. Uchida, M. Kawai

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

    5 Citations (Scopus)

    Abstract

    Clogging trouble in a sewage pump is a serious problem caused by foreign substances like strings, towels, and cloths. However, mechanism of pump clogging is significantly complicated and it is difficult to clarify factors affecting pump clogging. In this paper, the simplified air duct test and axial fan test are introduced and some parameter studies based on design of experiments (DOE) were conducted. From the DOE results, the sensitivity of each parameter to the clogging was predicted. As the parameters related to the clogging, length and rigidity of the strings, leading shape and lean angle of obstacles, flow velocity in a measuring section were selected. Behavior of string in the pump was also observed in the actual pump apparatus and was compared to that in the air duct. Computational simulation with simplified flow fields and MBD (Multi Body Dynamics) was developed and applied to predict behavior of a string in the pump. These experiments and computation are effective to detect and classify the clogging mechanism. These approaches aided to establish one of the evaluation methods on anti-clogging performance against fibrous materials.

    Original languageEnglish
    Title of host publicationIOP Conference Series: Earth and Environmental Science
    PublisherInstitute of Physics Publishing
    Volume22
    DOIs
    Publication statusPublished - 2014
    Event27th IAHR Symposium on Hydraulic Machinery and Systems, IAHR 2014 - Montreal, Canada
    Duration: 2014 Sep 222014 Sep 26

    Other

    Other27th IAHR Symposium on Hydraulic Machinery and Systems, IAHR 2014
    CountryCanada
    CityMontreal
    Period14/9/2214/9/26

    Fingerprint

    pump
    experiment
    air
    rigidity
    flow velocity
    flow field
    material
    sewage
    simulation
    parameter
    test

    ASJC Scopus subject areas

    • Earth and Planetary Sciences(all)
    • Environmental Science(all)

    Cite this

    Kudo, H., Kawahara, T., Kanai, H., Miyagawa, K., Saito, S., Isono, M., ... Kawai, M. (2014). Study on clogging mechanism of fibrous materials in a pump by experimental and computational approaches. In IOP Conference Series: Earth and Environmental Science (Vol. 22). [012011] Institute of Physics Publishing. https://doi.org/10.1088/1755-1315/22/1/012011

    Study on clogging mechanism of fibrous materials in a pump by experimental and computational approaches. / Kudo, H.; Kawahara, T.; Kanai, H.; Miyagawa, Kazuyoshi; Saito, S.; Isono, M.; Nohmi, M.; Uchida, H.; Kawai, M.

    IOP Conference Series: Earth and Environmental Science. Vol. 22 Institute of Physics Publishing, 2014. 012011.

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

    Kudo, H, Kawahara, T, Kanai, H, Miyagawa, K, Saito, S, Isono, M, Nohmi, M, Uchida, H & Kawai, M 2014, Study on clogging mechanism of fibrous materials in a pump by experimental and computational approaches. in IOP Conference Series: Earth and Environmental Science. vol. 22, 012011, Institute of Physics Publishing, 27th IAHR Symposium on Hydraulic Machinery and Systems, IAHR 2014, Montreal, Canada, 14/9/22. https://doi.org/10.1088/1755-1315/22/1/012011
    Kudo H, Kawahara T, Kanai H, Miyagawa K, Saito S, Isono M et al. Study on clogging mechanism of fibrous materials in a pump by experimental and computational approaches. In IOP Conference Series: Earth and Environmental Science. Vol. 22. Institute of Physics Publishing. 2014. 012011 https://doi.org/10.1088/1755-1315/22/1/012011
    Kudo, H. ; Kawahara, T. ; Kanai, H. ; Miyagawa, Kazuyoshi ; Saito, S. ; Isono, M. ; Nohmi, M. ; Uchida, H. ; Kawai, M. / Study on clogging mechanism of fibrous materials in a pump by experimental and computational approaches. IOP Conference Series: Earth and Environmental Science. Vol. 22 Institute of Physics Publishing, 2014.
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    abstract = "Clogging trouble in a sewage pump is a serious problem caused by foreign substances like strings, towels, and cloths. However, mechanism of pump clogging is significantly complicated and it is difficult to clarify factors affecting pump clogging. In this paper, the simplified air duct test and axial fan test are introduced and some parameter studies based on design of experiments (DOE) were conducted. From the DOE results, the sensitivity of each parameter to the clogging was predicted. As the parameters related to the clogging, length and rigidity of the strings, leading shape and lean angle of obstacles, flow velocity in a measuring section were selected. Behavior of string in the pump was also observed in the actual pump apparatus and was compared to that in the air duct. Computational simulation with simplified flow fields and MBD (Multi Body Dynamics) was developed and applied to predict behavior of a string in the pump. These experiments and computation are effective to detect and classify the clogging mechanism. These approaches aided to establish one of the evaluation methods on anti-clogging performance against fibrous materials.",
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    AU - Kanai, H.

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    AU - Saito, S.

    AU - Isono, M.

    AU - Nohmi, M.

    AU - Uchida, H.

    AU - Kawai, M.

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    AB - Clogging trouble in a sewage pump is a serious problem caused by foreign substances like strings, towels, and cloths. However, mechanism of pump clogging is significantly complicated and it is difficult to clarify factors affecting pump clogging. In this paper, the simplified air duct test and axial fan test are introduced and some parameter studies based on design of experiments (DOE) were conducted. From the DOE results, the sensitivity of each parameter to the clogging was predicted. As the parameters related to the clogging, length and rigidity of the strings, leading shape and lean angle of obstacles, flow velocity in a measuring section were selected. Behavior of string in the pump was also observed in the actual pump apparatus and was compared to that in the air duct. Computational simulation with simplified flow fields and MBD (Multi Body Dynamics) was developed and applied to predict behavior of a string in the pump. These experiments and computation are effective to detect and classify the clogging mechanism. These approaches aided to establish one of the evaluation methods on anti-clogging performance against fibrous materials.

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