Volume 4: Fluid-Structure Interaction最新文献

Diffracted Blast Loads Behind Structures 结构后面的衍射爆炸荷载

Volume 4: Fluid-Structure Interaction Pub Date : 2020-08-03 DOI: 10.1115/pvp2020-21514

J. Geng, J. K. Thomas

引用次数: 0

Examination of Oscillating Frequencies Generated by Combustion Oscillation Considering Temperature Distribution in a Combustor Tube Fueled by Natural Gas and Hydrogen Mixture 考虑温度分布的天然气氢混合燃料燃烧管燃烧振荡振荡频率的研究

Volume 4: Fluid-Structure Interaction Pub Date : 2020-08-03 DOI: 10.1115/pvp2020-21231

A. Uemichi, K. Mitani, Y. Yamasaki, S. Kaneko

{"title":"Examination of Oscillating Frequencies Generated by Combustion Oscillation Considering Temperature Distribution in a Combustor Tube Fueled by Natural Gas and Hydrogen Mixture","authors":"A. Uemichi, K. Mitani, Y. Yamasaki, S. Kaneko","doi":"10.1115/pvp2020-21231","DOIUrl":"https://doi.org/10.1115/pvp2020-21231","url":null,"abstract":"\u0000 A combustion oscillation experiment fueling a mixture of hydrogen and natural gas was performed. The results showed oscillating frequencies of around 350 Hz in the case of the town gas only, whereas oscillating frequencies of around 200 and 400 Hz were observed in the hydrogen-containing fuel case. We hypothesized that the oscillating frequencies shift may occur by changing the temperature-distribution inside the tube, which was caused by different combustion conditions with the fuel mixture. As a result, the possible oscillating frequencies of not only around 350 Hz but also around 200 and 400 Hz were obtained. Although three types of possible oscillating frequencies were obtained in our previous study, more detailed temperature distributions should be considered to clarify the effect of the changing fuel mixture composition. In this paper, representative one-dimensional temperature distributions were formed by the combination of measured and calculated temperature distributions in the combustion tube for the corresponding fuel mixture. To include the detailed temperature distributions, the acoustic network model was divided into enough small elements to express the temperature distributions, where each element was connected by the transfer matrix. Then, the possible oscillating frequencies were calculated, taking account of the influence of the temperature distributions.","PeriodicalId":185894,"journal":{"name":"Volume 4: Fluid-Structure Interaction","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133759470","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

Motion Model of Spent Fuel Rack Considering Two-Dimensional Gap Flow 考虑二维间隙流的乏燃料架运动模型

Volume 4: Fluid-Structure Interaction Pub Date : 2020-08-03 DOI: 10.1299/jsmedmc.2019.619

Y. Araki, S. Kaneko

引用次数: 0

Bounding Acoustic Load Development for Boiling Water Reactor Shroud and Shroud Supports 沸水反应堆护罩及护罩支架的边界声载荷发展

Volume 4: Fluid-Structure Interaction Pub Date : 2020-08-03 DOI: 10.1115/pvp2020-21633

Matthew R. Walter, Min Qin, D. Sommerville

{"title":"Bounding Acoustic Load Development for Boiling Water Reactor Shroud and Shroud Supports","authors":"Matthew R. Walter, Min Qin, D. Sommerville","doi":"10.1115/pvp2020-21633","DOIUrl":"https://doi.org/10.1115/pvp2020-21633","url":null,"abstract":"\u0000 As part of the license basis of a nuclear boiling water reactor pressure vessel, a sudden loss of coolant accident (LOCA) event needs to be analyzed. One of the loads that results from this event is a sudden depressurization of the recirculation line. This leads to an acoustic wave that propagates through the reactor coolant and impacts several structures inside the reactor pressure vessel (RPV). The authors have previously published a PVP paper (PVP2015-45769) which provides a survey of LOCA acoustic loads on boiling water reactor core shrouds. Acoustic loads are required for structural evaluation of core shrouds; therefore, a defensible load is required. The previous research compiled plant-specific data that was available at the time. Since then, additional data has become available which will add to the robustness of the bounding load methodology that was developed. Investigations are also made regarding the shroud support to RPV weld, which was neglected from the previous study. This will allow a practitioner a convenient method to calculate bounding acoustic loads on all shroud and shroud support welds in the absence of a plant-specific analysis.","PeriodicalId":185894,"journal":{"name":"Volume 4: Fluid-Structure Interaction","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116677576","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

Venting Manhole Cover: A Nonlinear Spring-Mass System 通风井盖:非线性弹簧-质量系统

Volume 4: Fluid-Structure Interaction Pub Date : 2020-08-03 DOI: 10.1115/pvp2020-21084

A. Tijsseling, JOSE G. VASCONCELOS, Q. Hou, Z. Bozkuş

引用次数: 1

Throttling Effect and Thermodynamic Characteristics of Supercritical CO2 Flowing Through Shut-Off Valve 超临界CO2通过截止阀的节流效果及热力学特性

Volume 4: Fluid-Structure Interaction Pub Date : 2020-08-03 DOI: 10.1115/pvp2020-21257

Xiaolu Guo, Peng Xu, Shuangqing Xu

{"title":"Throttling Effect and Thermodynamic Characteristics of Supercritical CO2 Flowing Through Shut-Off Valve","authors":"Xiaolu Guo, Peng Xu, Shuangqing Xu","doi":"10.1115/pvp2020-21257","DOIUrl":"https://doi.org/10.1115/pvp2020-21257","url":null,"abstract":"\u0000 The supercritical flow of CO2 is widely applied in energy fields such as the carbon capture and storage technology and the Brayton cycle power generation technology. The shut-off valves are widely used in various systems of energy fields, and their use is related to the stability and safety of the system. Due to the throttling effect of supercritical CO2 flowing through the valve, the large temperature drop may cause the dry ice generation, the overpressure and the blockage, which have an important impact on the safety and stability of the whole system. At present, there are few researches on the throttling effect and thermodynamic characteristics of supercritical CO2 flowing through the shut-off valve. In this paper, the pressure and temperature changes before the valve inlet and after the valve outlet were studied, and the field of pressure, temperature and phase inside the valve were analyzed. It was found that the outlet pressure of the shut-off valve increased rapidly after the valve was opened, and the temperature decreased at the same time. With the decrease of system pressure, supercritical CO2 in front of the valve changed into gas-liquid two-phase and gas-phase successively, and CO2 after the valve changed into gas-phase, liquid-phase, gas-liquid two-phase and gas-phase successively. This study is of great significance to the stability and safe operation of energy systems.","PeriodicalId":185894,"journal":{"name":"Volume 4: Fluid-Structure Interaction","volume":"2014 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121395155","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

Multiphase Flow Induced Vibrations at High Pressure 高压下多相流诱导振动

Volume 4: Fluid-Structure Interaction Pub Date : 2020-08-03 DOI: 10.1115/pvp2020-21139

S. Belfroid, N. Gonzalez-Diez, K. Lunde, S. Orre

引用次数: 0

Addressing Shell Mode Vibration in Ducts in Refinery With Computational Models and Field Data 利用计算模型和现场数据寻址炼油厂管道壳型振动

Volume 4: Fluid-Structure Interaction Pub Date : 2019-11-15 DOI: 10.1115/pvp2019-93613

I. Chakraborty, A. Paul, G. Szasz

引用次数: 0

Phase Relation of Forces Between Multiple Bends 多弯间力的相位关系

Volume 4: Fluid-Structure Interaction Pub Date : 2019-11-15 DOI: 10.1115/pvp2019-93543

S. Belfroid, H. Pereboom, N. Gonzalez-Diez, A. Anantharaman

引用次数: 1

Flow-Excited Acoustic Resonance Vibration Mitigation of Reactor Inlet Piping by a Perforated Annulus

Volume 4: Fluid-Structure Interaction Pub Date : 2019-11-15 DOI: 10.1115/pvp2019-93428

J. P. Pontaza, Wesley K. Pudwill

{"title":"Flow-Excited Acoustic Resonance Vibration Mitigation of Reactor Inlet Piping by a Perforated Annulus","authors":"J. P. Pontaza, Wesley K. Pudwill","doi":"10.1115/pvp2019-93428","DOIUrl":"https://doi.org/10.1115/pvp2019-93428","url":null,"abstract":"\u0000 Piping vibration had been observed in one of our refinery’s reactor inlet piping for several decades. Vibration levels in inlet piping for reactor ‘D’ and ‘E’ were highest, relative to those in reactor ‘A’, ‘B’, and ‘C’. To cope with the vibration, design changes to small-bore branch connections had been implemented to reduce susceptibility to the vibration. A recent increase in production demand made the vibration levels more evident and a production constraint was imposed after an MOV gas seal failure.\u0000 Analysis identified the root-cause as flow-excited acoustic resonance of (almost) coaxial closed side branches in the flow path. The selected vibration mitigation solution involved installing a perforated annulus in the main line, in front of the mouth of the (almost) coaxial closed side branch acoustic resonator. Before fabricating and installing the perforated annulus, it was decided to evaluate its expected performance by means of computational fluid dynamics (CFD) and structural stress finite element analysis (FEA). This paper gives an account of the selection of the perforated annulus as the preferred vibration mitigation solution and its evaluation by means of high-performance computing CFD and FEA.\u0000 The CFD and FEA analysis showed that the perforated annulus would perform as intended and mitigate the piping vibration. The perforated annulus was fabricated and installed in the inlet piping for reactor ‘D’. Piping vibration was observed to be mitigated, even when flowing above the design rate. The perforated annulus vibration mitigation solution was replicated in the inlet piping for reactor ‘E’. The production constraint has since been lifted.","PeriodicalId":185894,"journal":{"name":"Volume 4: Fluid-Structure Interaction","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130700396","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