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    Dimensionless Analysis of Non-Newtonian Power-Law Fluid Hammer

    Source: Journal of Hydraulic Engineering:;2023:;Volume ( 149 ):;issue: 009::page 04023034-1
    Author:
    Tainan G. M. Santos
    ,
    Gabriel M. Oliveira
    ,
    Cezar O. R. Negrao
    DOI: 10.1061/JHEND8.HYENG-13276
    Publisher: ASCE
    Abstract: The current study presents a mathematical model to simulate a power-law fluid hammer problem in pipelines. The flow is considered two-dimensional, isothermal, weakly compressible, and laminar. The governing equations consisting of mass and momentum balances are solved by the method of characteristics. The model results are compared to other numerical model values and validated against measured data found in the literature. The comparisons show that the two-dimensional model agrees better with experimental data than the one-dimensional approach. Two dimensionless parameters (a dissipative parameter and the power-law index) are identified to govern the phenomenon, and a sensitivity analysis with respect to these parameters is conducted. It can be anticipated that the first pressure overshoot due to line packing and pressure wave dissipation increase with the dissipative parameter and with the power-law index.
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      Dimensionless Analysis of Non-Newtonian Power-Law Fluid Hammer

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    contributor authorTainan G. M. Santos
    contributor authorGabriel M. Oliveira
    contributor authorCezar O. R. Negrao
    date accessioned2023-11-27T23:29:13Z
    date available2023-11-27T23:29:13Z
    date issued7/4/2023 12:00:00 AM
    date issued2023-07-04
    identifier otherJHEND8.HYENG-13276.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4293596
    description abstractThe current study presents a mathematical model to simulate a power-law fluid hammer problem in pipelines. The flow is considered two-dimensional, isothermal, weakly compressible, and laminar. The governing equations consisting of mass and momentum balances are solved by the method of characteristics. The model results are compared to other numerical model values and validated against measured data found in the literature. The comparisons show that the two-dimensional model agrees better with experimental data than the one-dimensional approach. Two dimensionless parameters (a dissipative parameter and the power-law index) are identified to govern the phenomenon, and a sensitivity analysis with respect to these parameters is conducted. It can be anticipated that the first pressure overshoot due to line packing and pressure wave dissipation increase with the dissipative parameter and with the power-law index.
    publisherASCE
    titleDimensionless Analysis of Non-Newtonian Power-Law Fluid Hammer
    typeJournal Article
    journal volume149
    journal issue9
    journal titleJournal of Hydraulic Engineering
    identifier doi10.1061/JHEND8.HYENG-13276
    journal fristpage04023034-1
    journal lastpage04023034-9
    page9
    treeJournal of Hydraulic Engineering:;2023:;Volume ( 149 ):;issue: 009
    contenttypeFulltext
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