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The KSFM Journal of Fluid Machinery最新文献

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Performance Verification of Reactor Unidentified Leakage Detection System 反应堆不明泄漏检测系统的性能验证
The KSFM Journal of Fluid Machinery Pub Date : 2023-08-31 DOI: 10.5293/kfma.2023.26.4.046
Wooshik Kim, Taesoo Kwon
{"title":"Performance Verification of Reactor Unidentified Leakage Detection System","authors":"Wooshik Kim, Taesoo Kwon","doi":"10.5293/kfma.2023.26.4.046","DOIUrl":"https://doi.org/10.5293/kfma.2023.26.4.046","url":null,"abstract":"The real time detection of small leak flow is very important for the nuclear reactor safety. The early perception of the malfunction of the nuclear system due to the coolant leak can give a sufficient time required for the operator action. In the present study, an improved concept of small leak detection system was proposed and an experimental facility to evaluate the performance of the system was constructed. In the small leak detection system, the leaked steam is sampled using porous type sampling devices which are installed on the air circulation loop and the time variation of the humidity on the down stream of the loop is measured in real time. The main concept of the system proposed in the present study is to achieve fast and obvious leak detection with the aid of suction mode during the air circulation loop operation. Using the test facility, high pressure saturated steam under the condition of real nuclear power plant operation could be supplied to the test section. The small leakage flow was simulated on the wall of the pipe system simulator and the time variation of the humidity due to the leakage was detected through the circulation loop. The effects of the suction time, the air circulation loop length, and the distance form the leak point to the porous sampling device on the humidity signal were investigated. And also the leak detection performance using suction mode operation was compared to that using diffusion mode operation, which showed that faster and clearer leak detection.","PeriodicalId":338979,"journal":{"name":"The KSFM Journal of Fluid Machinery","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122232576","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: 0
Experiments on Power Generation System of Liquid Air Energy Storage System 液体空气储能系统发电系统实验研究
The KSFM Journal of Fluid Machinery Pub Date : 2023-08-31 DOI: 10.5293/kfma.2023.26.4.038
J. Park, Jeong-Ik Lee
{"title":"Experiments on Power Generation System of Liquid Air Energy Storage System","authors":"J. Park, Jeong-Ik Lee","doi":"10.5293/kfma.2023.26.4.038","DOIUrl":"https://doi.org/10.5293/kfma.2023.26.4.038","url":null,"abstract":"","PeriodicalId":338979,"journal":{"name":"The KSFM Journal of Fluid Machinery","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127647012","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: 0
Conjugate Heat Transfer Analysis for 1.5 Stage High-Pressure Turbine 1.5级高压涡轮的共轭传热分析
The KSFM Journal of Fluid Machinery Pub Date : 2023-08-31 DOI: 10.5293/kfma.2023.26.4.021
Young-Seok Kang, Heeyoon Chung, D. Rhee, Kapsik Son, Shaun S. H. Kim, Byeong-Eun Lim, Chulju Ahn, Bokown Lee
{"title":"Conjugate Heat Transfer Analysis for 1.5 Stage High-Pressure Turbine","authors":"Young-Seok Kang, Heeyoon Chung, D. Rhee, Kapsik Son, Shaun S. H. Kim, Byeong-Eun Lim, Chulju Ahn, Bokown Lee","doi":"10.5293/kfma.2023.26.4.021","DOIUrl":"https://doi.org/10.5293/kfma.2023.26.4.021","url":null,"abstract":"The evaluation of cooling performance in the hot sections of gas turbines plays a critical role in the gas turbine development. Specifically, accurate prediction of cooling performance in the high-pressure turbine, which involves complex interactions between internal cooling and film cooling mechanisms, poses a significant technical challenge. Several methodologies have been devised to predict the cooling performance in the high-pressure turbine, to address this technical challenge. Among these approaches, the conjugate heat transfer analysis method can predict the turbine blade surface temperatures by simulating both solid and fluid domains without any empirical formulations. In this study, a conjugate heat transfer analysis on a 1.5-stage high-pressure turbine within a 1,000 shp class gas turbine has been conducted, with the objective of assessing the cooling performance of both external and internal cooling methods and their impacts on the main flow within the turbine flow path. The overall cooling effectiveness analysis demonstrated that blade","PeriodicalId":338979,"journal":{"name":"The KSFM Journal of Fluid Machinery","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125286671","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: 0
Hydraulic Design Optimization of a Reactor Coolant Pump used for Small Modular Reactor 小型模块化反应堆冷却剂泵的水力优化设计
The KSFM Journal of Fluid Machinery Pub Date : 2023-08-31 DOI: 10.5293/kfma.2023.26.4.005
Je-Yong Yu, Deoksu Kim, Jae-Moon Jung
{"title":"Hydraulic Design Optimization of a Reactor Coolant Pump used for Small Modular Reactor","authors":"Je-Yong Yu, Deoksu Kim, Jae-Moon Jung","doi":"10.5293/kfma.2023.26.4.005","DOIUrl":"https://doi.org/10.5293/kfma.2023.26.4.005","url":null,"abstract":"The authors have studied hydraulic design of reactor coolant pump used for small modular reactor. Computational fluid dynamics was used to evaluate the impeller design. Seven factors for the 3D shape variables of the Impeller were selected as a design variables. As a result of using the response surface method for optimizing the shape of the impeller, we were able to select four major design factors for efficiency. The four factors were the impeller blade lengths, outlet blade angle component, and rake component. Finally, we obtained an efficient impeller design through the optimization of these four factors. The head increasing was 0.4m and the efficiency was improved by 0.5% compared to the original model.","PeriodicalId":338979,"journal":{"name":"The KSFM Journal of Fluid Machinery","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116108859","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: 0
Leakage Measurements of Labyrinth Seal, Brush Seal, and Radial Film Riding Face Seal 迷宫密封、刷式密封和径向膜端面密封的泄漏测量
The KSFM Journal of Fluid Machinery Pub Date : 2023-08-31 DOI: 10.5293/kfma.2023.26.4.029
Jin-Woo Jung, Sungh-Ho Hwang, Tae-Ho Kim, Eojin Kim, Jin-Woong Ha
{"title":"Leakage Measurements of Labyrinth Seal, Brush Seal, and Radial Film Riding Face Seal","authors":"Jin-Woo Jung, Sungh-Ho Hwang, Tae-Ho Kim, Eojin Kim, Jin-Woong Ha","doi":"10.5293/kfma.2023.26.4.029","DOIUrl":"https://doi.org/10.5293/kfma.2023.26.4.029","url":null,"abstract":"","PeriodicalId":338979,"journal":{"name":"The KSFM Journal of Fluid Machinery","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129419523","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: 0
Development of a Double Sensor Optical Fiber Probe Method for the Measurement of Local Droplet Parameters in Annular Mist Flow 环形雾流中局部液滴参数双传感器光纤探头测量方法的研制
The KSFM Journal of Fluid Machinery Pub Date : 2023-06-30 DOI: 10.5293/kfma.2023.26.3.005
Taeho Kim, J. Moon, B. Yun
{"title":"Development of a Double Sensor Optical Fiber Probe Method for the Measurement of Local Droplet Parameters in Annular Mist Flow","authors":"Taeho Kim, J. Moon, B. Yun","doi":"10.5293/kfma.2023.26.3.005","DOIUrl":"https://doi.org/10.5293/kfma.2023.26.3.005","url":null,"abstract":"","PeriodicalId":338979,"journal":{"name":"The KSFM Journal of Fluid Machinery","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115448730","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: 0
Performance study according to the shape change of strainer in a horizontal pressurized type swimming pool filtration system using flow simulation 采用流动模拟方法对卧式加压式泳池过滤系统滤网形状变化进行了性能研究
The KSFM Journal of Fluid Machinery Pub Date : 2023-06-30 DOI: 10.5293/kfma.2023.26.3.041
hyo-jeong Kang, Mun-Seong Jo, Se-Hyun Park, Sangzin Jeon, Jeong-Sik Kim, Joum-Woo Lee, Hyoung-Ho Kim
{"title":"Performance study according to the shape change of strainer in a horizontal pressurized type swimming pool filtration system using flow simulation","authors":"hyo-jeong Kang, Mun-Seong Jo, Se-Hyun Park, Sangzin Jeon, Jeong-Sik Kim, Joum-Woo Lee, Hyoung-Ho Kim","doi":"10.5293/kfma.2023.26.3.041","DOIUrl":"https://doi.org/10.5293/kfma.2023.26.3.041","url":null,"abstract":"","PeriodicalId":338979,"journal":{"name":"The KSFM Journal of Fluid Machinery","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124067708","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: 0
Numerical Analysis of a Straightener for Improving Flow Uniformity in a Selective Catalytic Reduction (SCR) Facility 提高选择性催化还原(SCR)装置流动均匀性的矫直器数值分析
The KSFM Journal of Fluid Machinery Pub Date : 2023-06-30 DOI: 10.5293/kfma.2023.26.3.032
Sangeun Bin, H. Park, J. Seong, Woongchul Choi, W. Hwang
{"title":"Numerical Analysis of a Straightener for Improving Flow Uniformity in a Selective Catalytic Reduction (SCR) Facility","authors":"Sangeun Bin, H. Park, J. Seong, Woongchul Choi, W. Hwang","doi":"10.5293/kfma.2023.26.3.032","DOIUrl":"https://doi.org/10.5293/kfma.2023.26.3.032","url":null,"abstract":"","PeriodicalId":338979,"journal":{"name":"The KSFM Journal of Fluid Machinery","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114429015","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: 0
Evaluation of Rotordynamics Characteristics of Rotating Machine in a Sloped Environment 倾斜环境下旋转机械转子动力学特性的评价
The KSFM Journal of Fluid Machinery Pub Date : 2023-06-30 DOI: 10.5293/kfma.2023.26.3.023
M. Jang
{"title":"Evaluation of Rotordynamics Characteristics of Rotating Machine in a Sloped Environment","authors":"M. Jang","doi":"10.5293/kfma.2023.26.3.023","DOIUrl":"https://doi.org/10.5293/kfma.2023.26.3.023","url":null,"abstract":"","PeriodicalId":338979,"journal":{"name":"The KSFM Journal of Fluid Machinery","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117313601","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: 0
Comparison of the Transient IR Camera and the PSP Techniques in Film Cooling Effectiveness Measurement 瞬态红外相机与PSP技术在气膜冷却效果测量中的比较
The KSFM Journal of Fluid Machinery Pub Date : 2023-06-30 DOI: 10.5293/kfma.2023.26.3.015
Won-Seok Lim, Dae-hee Lee, Ah-Hyeon Lee, Y. Jo, Min-Seok Kang, J. Jeong, J. Kwak
{"title":"Comparison of the Transient IR Camera and the PSP Techniques in Film Cooling Effectiveness Measurement","authors":"Won-Seok Lim, Dae-hee Lee, Ah-Hyeon Lee, Y. Jo, Min-Seok Kang, J. Jeong, J. Kwak","doi":"10.5293/kfma.2023.26.3.015","DOIUrl":"https://doi.org/10.5293/kfma.2023.26.3.015","url":null,"abstract":"","PeriodicalId":338979,"journal":{"name":"The KSFM Journal of Fluid Machinery","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127748965","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: 0
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