Journal of Huazhong University of Science and Technology最新文献

Hydrodynamic performance analysis of podded propulsor under ice blockage condition 冰阻塞状态下吊舱推进器水动力性能分析 Hydrodynamic performance analysis of podded propulsor under ice blockage condition 冰阻塞状态下吊舱推进器水动力性能分析

Journal of Huazhong University of Science and Technology Pub Date : 2018-05-23 DOI: 10.13245/J.HUST.180508

Chun-yu Guo, Pei Xu, Lianzhou Wang, Wanzhen Luo

{"title":"Hydrodynamic performance analysis of podded propulsor under ice blockage condition 冰阻塞状态下吊舱推进器水动力性能分析","authors":"Chun-yu Guo, Pei Xu, Lianzhou Wang, Wanzhen Luo","doi":"10.13245/J.HUST.180508","DOIUrl":"https://doi.org/10.13245/J.HUST.180508","url":null,"abstract":"In order to analyze the hydrodynamic performance and flow field characteristics of L-type podded propulsor under ice blockage condition, based on the RANS method, the unsteady hydrodynamic performance of L-type podded propulsor at different distances between propeller and ice was numerically calculated by using the overlapping grid technology.Research results show that with the decrease of the distance between propeller and ice, thrust and torque of propeller and pod unit increase gradually, and rapid increase when the distance is near, but the added value is unstable.With the decrease of the distance between propeller and ice, blade pressure difference increases gradually in blocking region, while the other blade pressure differences are almost the same, and the pressure differences of the strut and pod increase.The axial inflow velocity in the blocking region between the propeller and ice decreases first, then increases, and then decreases, and the axial inflow velocity is almost constant in the non-blocking zone.The high velocity area of the propeller trailing vortex increases gradually towards the propeller rotation direction.","PeriodicalId":16031,"journal":{"name":"Journal of Huazhong University of Science and Technology","volume":"3 1","pages":"41-46"},"PeriodicalIF":0.0,"publicationDate":"2018-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79212548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Friction and wear on-line monitoring and wear mechanism analysis under dynamic loading manners 动态加载方式下摩擦磨损在线监测与磨损机理分析

Journal of Huazhong University of Science and Technology Pub Date : 2016-02-23 DOI: 10.13245/J.HUST.160208

Weiyun Yuan, G. Dong, K. Chin, M. Hua

引用次数: 0

Space temperature control of variable air volume air-conditioning system 变风量空调系统的空间温度控制

Journal of Huazhong University of Science and Technology Pub Date : 2015-12-23 DOI: 10.13245/J.HUST.151218

Jiajia Gao, Xin-hua Xu, G. Huang

引用次数: 0

Numerical simulation of damage evolution on low-velocity impact of glass fiber reinforced aluminum laminates 玻璃纤维增强铝层板低速冲击损伤演化的数值模拟

Journal of Huazhong University of Science and Technology Pub Date : 2015-01-01 DOI: 10.13245/J.HUST.150220

Y. Wan, Jifeng Zhang, Li Min Zhou, Zhenqing Wang

引用次数: 0

On Economic Liberty 论经济自由

Journal of Huazhong University of Science and Technology Pub Date : 2014-01-01 DOI: 10.4135/9781483302799.n107

Gong Tian-pin

引用次数: 5

Study on Different Residual and Weight Coefficient in Model Updating of Bridge Structure 桥梁结构模型更新中不同残差系数和权重系数的研究

Journal of Huazhong University of Science and Technology Pub Date : 2008-01-01 DOI: 10.1061/41064(358)14

L. Jie, Huang Min-shui, Zhu Hong-ping

{"title":"Study on Different Residual and Weight Coefficient in Model Updating of Bridge Structure","authors":"L. Jie, Huang Min-shui, Zhu Hong-ping","doi":"10.1061/41064(358)14","DOIUrl":"https://doi.org/10.1061/41064(358)14","url":null,"abstract":"Relative merits of different residuals used in the construction of objective function and weight coefficients in single-objective function for structural model updating are investigated in this paper based on the improved genetic algorithm (IGA). Presently there are three residuals which are used mostly in finite element (FE) model updating: frequency residual, mode shape residual, and modal flexibility residual. Relative merits of the three residuals are analyzed through the simulation of a simply supported beam. Then, model updating is studied comparatively based on IGA. Frequency is the main characteristic parameter of bridge structure, which has high identification precision and should be used with priority. When there are several updating parameters, information should be complemented. If identification error of the mode shape is relatively less, the complement of the mode shape is feasible. In the end, through the analysis of weight coefficients for different residuals in single-objective function, it can be seen that the model updating performance is better when the frequency residual has a larger weight coefficient.","PeriodicalId":16031,"journal":{"name":"Journal of Huazhong University of Science and Technology","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78381760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Determination of Progesterone Receptor by Chemiluminescent Enzyme Immunoassay 化学发光酶免疫分析法测定孕酮受体

Journal of Huazhong University of Science and Technology Pub Date : 2003-03-01 DOI: 10.1007/BF02829465

T. Yin, Meijiao Gu, Yikai Zhou, W. Zheng, W. Hu, Yunping Lu

引用次数: 0