检索结果-南通市图书馆

DELTA WINGLETS FOR ENHANCING SOLAR ENERGY:TURBULENT STRAIN RATE-HEAT CONVECTION RELATIONSHIP

Journal of Green Building 2021年第2期16卷 97-114页

作者： Yang Yang siddharth koushik mohanakrishnan David S-K.Ting Steve Ray Turbulence and Energy Laboratory University of WindsorONCanada Essex Energy OldcastleONCanada

Delta winglets are an effective means for enhancing heat exchange and thus the performance of renewable energy technologies,including solar energy.A pair of 0.1 mm thick,15 mm high(h)and 30 mm long aluminum winglets separated with transversal spacing,s,of 2h,h and 0 were scrutinized in a closed-loop wind tunnel at a Reynolds number based on h of *** turbulent flow was characterized using a 3D hotwire probe,and the heat convection augmentation was quantified in terms of the normalized Nusselt number(Nu/Nu0),indicating the heat transfer improve-ment compared to the reference case without the *** interaction of the organized counter-rotational vortices intensifies and they become indiscernible at s=*** peak strain rate at 10h downstream increased from 390 s^(–1),to 478 s^(–1),to 514 s^(–1),when the spacing decreased from 2h to h to 0,*** zero-spaced winglet pair provided the largest Nu/Nu0,of around 1.21,at X/h=10 and Y/h=0,approximately 21%higher than that of 2h-spaced winglet pair,due to the strongest strain rate and the absence of upwash *** the other hand,the 2h-spaced winglet pair provided the largest span-averaged Nu/Nu0,which is of practical significance.

关键词： delta-winglet pair turbulent strain rate heat transfer enhancement

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Outcome of complex tibial plateau fractures with Ilizarov external fixation with or without minimal internal fixation

引用

Chinese Journal of Traumatology 2019年第3期22卷 166-171页

作者： koushik Narayan Subramanyam Madhusudhan Tammanaiah Abhishek Vasant Mundargi Ritesh Nilakanthrao Bhoskar Patllola siddharth Reddy Department of Orthopaedics Sri Sathya Sai Institute of Higher Medical SciencesPrashanthigramPuttaparthiAndhra Pradesh 515134India

Purpose: To evaluate the clinico-radiological outcome of complex tibial plateau fractures treated with Ilizarov external fixation with or without minimal internal fixation. Methods: This retrospective review was conducted on all the cases of Schatzker types V and VI tibial plateau fractures treated by Ilizarov external fixation between July 2006 and December 2015 with the minimum follow-up duration of one year. There were 30 patients: 24 males and 6 females, mean age 43.33 years, and mean follow-up 3.6 years. Three of them were open fractures;15 cases were Schatzkertype V fractures and the other 15 type VI. According to AO/OTA classification, there were 11 type C1, 12 C2 and 7 type C3 fractures. Outcome assessment was made with American Knee Society Score (AKSS) and Rasmussen's Radiological Score (RRS) at final follow-up. Results: Out of the 30 cases, mini-open reduction was performed in 7, bone graft in 4, minimal internal fixation in 10 and knee temporary immobilisation in 11 patients. Mean duration of external fixation was 11.8 weeks. All fractures united. Pin tract infections in 7 and common peroneal neuropathy in 2 patients were self-limiting. Two patients had axial misalignment of less than 10°. At final follow-up, the mean knee range of motion was 114.7, mean AKSS 81.5 and mean RRS 16.7. On statistical analysis, Schatzker type of fractures, use of minimal internal fixation and knee-spanning did not influence the final outcome. Conclusion: Ilizarov external fixator with or without minimal internal fixation provides acceptable outcome for complex tibial plateau fractures. Care must be taken to look for minor loss of alignment, especially in Type VI Schatzker fractures after removal of the fixator. However small sample size precludes firm conclusions.

关键词： Tibial plateau fractures Schatzker's classification Ilizarov techniques Ring fixator

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：