• Chinese Journal of Ship Research
  • Vol. 18, Issue 5, 73 (2023)
Yuting CHEN1, Shihua XU2, Jiahao SHI1, Xu LIU1, and Guoxiang HOU1
Author Affiliations
  • 1School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
  • 2China Ship Development and Design Center, Wuhan 430064, China
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    DOI: 10.19693/j.issn.1673-3185.02936 Cite this Article
    Yuting CHEN, Shihua XU, Jiahao SHI, Xu LIU, Guoxiang HOU. Hydrodynamic performance of small unmanned catamaran based on STAR-CCM+[J]. Chinese Journal of Ship Research, 2023, 18(5): 73 Copy Citation Text show less
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    参数数值
    船长L/m1.184
    单片体宽B/m0.225
    型深H/m0.169
    片体间距d/m0.680
    平均吃水T/m0.070
    初始纵倾角度$ {\theta _0} $/(°)1.679
    单片体湿表面积S/m20.303
    单片体排水体积$\nabla$/m30.012
    推进器直径D/m0.094
    Table 1. Principal dimensions of unmanned catamaran
    网格基础尺寸h/m网格数量
    0.060620 467
    0.058698 329
    0.052883 026
    0.0481 119 250
    0.0401 806 127
    0.0352 681 102
    0.0304 122 151
    0.0247 860 054
    Table 2. Different grid foundation sizes
    网格基础尺寸h/m网格阻力收敛平均值$ f(R) $/N网格加密比r网格收敛误差$ \alpha (R) $网格收敛指数$ GCI(R) $/%
    0.0608.3331.034−0.0035.361
    0.0588.3571.115−0.01910.064
    0.0528.5191.0920.0095.929
    0.0488.4421.190−0.0195.776
    0.0408.6011.143−0.0104.270
    0.0358.6901.167−0.0082.675
    0.0308.7561.2610.0061.319
    0.0248.702
    Table 3. GCI convergence analysis of model total resistance
    FrReU/(m∙s−1)
    0.6721.329×1061.0
    1.3442.658×1062.0
    2.0163.987×1063.0
    2.822830.4×1064.2
    Table 4. The Fr numbers and Re numbers corresponding to different speeds
    FrU/(m∙s−1)2倍单片体总阻力R1/N双片体总阻力R2/N相对误差/%
    0.6721.03.1613.1610.011
    1.3442.030.16131.1823.384
    2.0163.034.75934.306−1.304
    2.8224.271.37373.3582.782
    Table 5. Comparison of the total resistance between the double hull and twice the single hull at different Fr numbers
    Fr单片体波幅/m双片体波幅/m相对误差/%
    0.6720.0050.0068.854
    1.3440.0140.0154.246
    2.0160.0770.0859.501
    2.8220.1790.175−2.413
    Table 6. Comparison of the wave amplitudes of free surface at 0.05L from stern on midship longitudinal section for double hull and single hull at different Fr numbers
    Fr单片体表面平均摩擦系数双片体表面平均摩擦系数相对误差/%
    0.6721.9642.0202.827
    1.3447.0927.1020.143
    2.01616.52716.6941.011
    2.8228.6138.8392.626
    Table 7. Comparison of average friction coefficient of the hull surface for double hull and single hull at different Fr numbers
    推进器转速n/(r∙min−1)推力试验值/N推力仿真值/N相对误差/%
    1 0003.6053.9579.753
    2 00016.18715.8272.221
    3 00038.99836.2207.124
    Table 8. Comparison of propeller experimental and simulated values of unmanned catamaran during self-propelled state at different propulsion speeds
    推进器转速n/(r∙min−1)平衡点航速Ue/(m∙s−1)自航阻力RT/N静水阻力R2/N相对误差/%
    1 0001.1687.9147.6693.188
    2 0001.99831.65429.4997.307
    3 0003.94372.43959.81821.099
    Table 9. Comparison of total resistance between self-propelled and hydrostatic states of unmanned catamaran at different equilibrium point speeds
    Yuting CHEN, Shihua XU, Jiahao SHI, Xu LIU, Guoxiang HOU. Hydrodynamic performance of small unmanned catamaran based on STAR-CCM+[J]. Chinese Journal of Ship Research, 2023, 18(5): 73
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