| 刘艳,赵鹏飞,周力,陈朝晖.RANS方法和升力面理论预报螺旋桨敞水性能比较研究[J].,2010,(6):901-906 |
| RANS方法和升力面理论预报螺旋桨敞水性能比较研究 |
| Contrast study of RANS and lifting surface theory when predicting open water characteristics of propeller |
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| DOI：10.7511/dllgxb201006011 |
| 中文关键词: 螺旋桨 敞水性能 RANS 升力面理论 |
| 英文关键词: propeller open water performance RANS lifting surface theory |
| 基金项目:辽宁省教育厅高校重点实验室资助项目(20060117). |
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| 中文摘要: |
| 利用CFX软件，通过求解雷诺平均的Navier-Stokes(简称RANS)方程和使用标准的两方程 k-ε 湍流模型对MAU4-50螺旋桨进行了敞水性能预报，同时应用基于势流理论的升力面方法加粘性修正对同一螺旋桨进行了计算．为了评价两种方法的预报精度，将计算结果与试验值进行了对比．对于推力系数，RANS和升力面理论的平均误差分别为3.8%和 12.7%； 对于扭矩系数，RANS和升力面理论的平均误差分别为6.2%和7.4%．RANS和升力面理论计算得到的敞水效率的平均误差分别为-3.94%和3.69%．结果表明，RANS的计算精度高于升力面理论,但前者的计算成本高． |
| 英文摘要: |
| Based on CFX software, predictions of MAU4-50 propeller′s open water characteristics are carried out by solving Reynolds Averaged Navier-Stokes (RANS) equations and use of the standard two-equation k-ε turbulent flow model. Meanwhile, the potential theory-based lifting surface method coupled with viscosity correction is employed for the same propeller. To evaluate each method′s performances, results from these two methods are compared with experimental data. For thrust coefficients, the averaged errors for RANS and lifting surface theory are 3.8% and 12.7% respectively. For torque coefficients, the averaged errors for RANS and lifting surface theory are 6.2% and 7.4% respectively. The average errors for open water efficiency are -3.94% and 3.69% for RANS and lifting surface theory respectively. Comparative results show that predictive accuracy of RANS is higher than that of the lifting surface theory; however, the former is costlier than the latter. |
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