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Mathematical Modeling Study of Pressure Loss in the Flow Channels of Additive Manufacturing Aviation Hydraulic Valves

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  • Dongfei Li

    (College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)

  • Ning Dai

    (College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)

  • Hongtao Wang

    (College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)

  • Fujun Zhang

    (College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)

Abstract

The application of additive manufacturing in the field of aviation hydraulics greatly improves the design freedom of hydraulic valve internal flow channels. Pressure loss in hydraulic valve internal flow channels is a primary factor that designers need to consider, and the rapid prediction of pressure loss is very helpful for flow channel design. At present, most studies only focus on how much the pressure loss in an additive manufacturing (AM) hydraulic channel is reduced compared with an original hydraulic channel, and a mathematical model of pressure loss in an AM curved channel is still lacking. In this paper, the pressure loss in a curved flow channel was firstly studied, and the main parameters affecting the pressure loss were determined using the dimensionless analysis method. Using computational fluid dynamics simulation, the relationships between the flow channel diameter, the flow channel length, the flow channel curvature radius, the fluid velocity and pressure loss were studied. According to the multiple regression analysis method, the mathematical model of pressure loss in aviation hydraulic channels was developed, and the model was solved based on the orthogonal experimental results. The pressure loss in the flow channel samples fabricated using selective laser melting was tested, and the results showed that the average error between the test results and the mathematical model calculation results was 7.72%. This model can be used to quickly predict the pressure loss in curved flow channels in the aviation hydraulic field.

Suggested Citation

  • Dongfei Li & Ning Dai & Hongtao Wang & Fujun Zhang, 2023. "Mathematical Modeling Study of Pressure Loss in the Flow Channels of Additive Manufacturing Aviation Hydraulic Valves," Energies, MDPI, vol. 16(4), pages 1-15, February.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:4:p:1788-:d:1065155
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    References listed on IDEAS

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    1. Jun-hui Zhang & Gan Liu & Ruqi Ding & Kun Zhang & Min Pan & Shihao Liu, 2019. "3D Printing for Energy-Saving: Evidence from Hydraulic Manifolds Design," Energies, MDPI, vol. 12(13), pages 1-21, June.
    2. Barbara Zardin & Giovanni Cillo & Carlo Alberto Rinaldini & Enrico Mattarelli & Massimo Borghi, 2017. "Pressure Losses in Hydraulic Manifolds," Energies, MDPI, vol. 10(3), pages 1-21, March.
    3. Barbara Zardin & Giovanni Cillo & Massimo Borghi & Alessandro D’Adamo & Stefano Fontanesi, 2017. "Pressure Losses in Multiple-Elbow Paths and in V-Bends of Hydraulic Manifolds," Energies, MDPI, vol. 10(6), pages 1-21, June.
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