摘要
为了在螺旋桨水洞实验中将测试传感器通过测试定子引出,并尽可能减小测试定子对水洞流场的影响,确保螺旋桨水洞实验及相关测试结果的准确性,首先根据NACA翼型,在测试定子截面厚度一定的情况下,通过调整截面厚度比得到6种典型截面形式;然后,通过数值计算对比6种测试定子所产生的尾流分布以及尾流扰流情况,发现厚度比为30%的截面翼型尾流分布均匀,流场扰动缓和且范围最小,在此基础上,根据实际水洞的有限长度,选取厚度比为30%的截面翼型置于螺旋桨正前方0.6m处进行数值模拟,所得螺旋桨水动力结果与螺旋桨敞水试验对比吻合较好;最后,分析了各叶片的压力分布情况及不同进速下的推力和扭矩,结果表明:该测试定子对后方螺旋桨周围流场的影响可忽略,验证了所选用截面形式测试定子应用于螺旋桨水洞实验的可行性。
In order to get the testing sensors in the water tunnel through propeller experiment, the effect of the testing stator on the fluid field must be reduced as much as possible to ensure the accuracy of propeller water tunnel experiment and its relevant test results. Based on NACA airfoil profile, six classic section forms are acquired by fixing the testing stator＇s section thickness and adjusting its thickness ratio. Through the numerical simulation and comparison of the wake distribution and turbu- lence caused by the six different testing stators, it is found that the wake distribution and turbulence are uniform, with a minimal impact when the testing stator＇s section thickness ratio is about 30%. On this basis, according to the limited physical length of the tunnel water, the testing stator with the sec- tion thickness ratio as 30% is placed 0.6 m in front of the propeller for the numerical simulation of the hydrodynamic performance of the propeller. The calculated results coincide well with the experimental data. The analysis of pressure distribution and each bladers thrust and torque at different advance co- efficient J indicates that the influence of the testing stator on the fluid field around the propeller can be ignored. The results show that the testing stator in the above specific section form can be applied to the orooeller water tunnel experiment.
出处
《海军工程大学学报》
CAS
北大核心
2014年第3期90-94,共5页
Journal of Naval University of Engineering
基金
国家部委基金资助项目(4010405030101)
关键词
水洞试验
测试定子
螺旋桨
水动力性能
experiment in water tunnel
testing stator~ propeller
hydrodynamic performance
