Pub Date : 2023-01-01DOI: 10.12677/ijfd.2023.111002
薛豹 周
In order to clarify the design method of nozzle and the influence of nozzle junction structure on
{"title":"Study on the Influence of Centrifugal Nozzle Design and Structural Parameters on Nozzle Performance","authors":"薛豹 周","doi":"10.12677/ijfd.2023.111002","DOIUrl":"https://doi.org/10.12677/ijfd.2023.111002","url":null,"abstract":"In order to clarify the design method of nozzle and the influence of nozzle junction structure on","PeriodicalId":66025,"journal":{"name":"流体动力学","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66099847","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}
Pub Date : 2023-01-01DOI: 10.12677/ijfd.2023.112007
豪 康
Physics-Informed Neural Networks (PINN) is a novel data-driven numerical framework for solving
{"title":"Application of Physics Informed Neural Net-work Method Based on Numerical Differentiation in Non-Rectangular Regions","authors":"豪 康","doi":"10.12677/ijfd.2023.112007","DOIUrl":"https://doi.org/10.12677/ijfd.2023.112007","url":null,"abstract":"Physics-Informed Neural Networks (PINN) is a novel data-driven numerical framework for solving","PeriodicalId":66025,"journal":{"name":"流体动力学","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66099891","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}
Pub Date : 2023-01-01DOI: 10.12677/ijfd.2023.113008
帅 王
In order to explore the effect of the initial velocity and the constraint point between droplets on the droplet jump caused by the agglomeration of moving droplets and static droplets, a one-way
{"title":"Numerical Simulation of Jump Induced by Coalescence of Static and Static Droplets","authors":"帅 王","doi":"10.12677/ijfd.2023.113008","DOIUrl":"https://doi.org/10.12677/ijfd.2023.113008","url":null,"abstract":"In order to explore the effect of the initial velocity and the constraint point between droplets on the droplet jump caused by the agglomeration of moving droplets and static droplets, a one-way","PeriodicalId":66025,"journal":{"name":"流体动力学","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66100014","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}
Pub Date : 2023-01-01DOI: 10.12677/ijfd.2023.112006
明海 刘
In order to study the pedestrian wind environment on podium roof of high-rise building, a series of wind tunnel tests and numerical simulations were carried out. The distribution characteristics of pedestrian wind speed on podium roof with different building size parameters were analyzed. The results show that the around flow effect will cause significant speed-up effect on both sides of the tall building, resulting in pedestrian wind speed on these areas is relatively large. The pedestrian wind speed is the largest when the angle between the incoming wind and the building fa-刘明海，石芬
{"title":"Study on Pedestrian Wind Environment on Podium Roof of High-Rise Building","authors":"明海 刘","doi":"10.12677/ijfd.2023.112006","DOIUrl":"https://doi.org/10.12677/ijfd.2023.112006","url":null,"abstract":"In order to study the pedestrian wind environment on podium roof of high-rise building, a series of wind tunnel tests and numerical simulations were carried out. The distribution characteristics of pedestrian wind speed on podium roof with different building size parameters were analyzed. The results show that the around flow effect will cause significant speed-up effect on both sides of the tall building, resulting in pedestrian wind speed on these areas is relatively large. The pedestrian wind speed is the largest when the angle between the incoming wind and the building fa-刘明海，石芬","PeriodicalId":66025,"journal":{"name":"流体动力学","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66099819","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}
Pub Date : 2023-01-01DOI: 10.12677/ijfd.2023.112003
海波 万
Aiming at the noise problem of steam ball valves in engineering practice, this paper adopts the acoustic solid coupling numerical simulation method to study the structural modal characteristics of ball valves and the radiation vibration noise response of valve bodies and pipes. The research results show that the flow field generated in the pipeline behind the valve is the most turbulent,
{"title":"Numerical Analysis of Vibration and Noise of Ball Valve Based on Acoustic Vibration Coupling","authors":"海波 万","doi":"10.12677/ijfd.2023.112003","DOIUrl":"https://doi.org/10.12677/ijfd.2023.112003","url":null,"abstract":"Aiming at the noise problem of steam ball valves in engineering practice, this paper adopts the acoustic solid coupling numerical simulation method to study the structural modal characteristics of ball valves and the radiation vibration noise response of valve bodies and pipes. The research results show that the flow field generated in the pipeline behind the valve is the most turbulent,","PeriodicalId":66025,"journal":{"name":"流体动力学","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66099916","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}
Pub Date : 2023-01-01DOI: 10.12677/ijfd.2023.113009
鲁丹 付
Currently, in the research of nonlinear hydroacoustic waves
{"title":"Study on Approximate Dispersion Relation of Nonlinear Hydroacoustic Wave","authors":"鲁丹 付","doi":"10.12677/ijfd.2023.113009","DOIUrl":"https://doi.org/10.12677/ijfd.2023.113009","url":null,"abstract":"Currently, in the research of nonlinear hydroacoustic waves","PeriodicalId":66025,"journal":{"name":"流体动力学","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135801305","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}
Pub Date : 2023-01-01DOI: 10.12677/ijfd.2023.111001
国林 王
In this paper, the high-temperature dust removal and separation performance of cyclone separator is numerically studied, and the effects of inlet velocity, temperature, particle density and shell thermal boundary conditions on the dust removal efficiency of cyclone separator are explored. The results showed that when the inlet flow rate was constant, the separation efficiency decreased by 8.62% at 900 K compared with 600 K. When the temperature is constant, the separation effi-王国林
{"title":"Numerical Study on High-Temperature Dedusting Performance of Cyclone Separator","authors":"国林 王","doi":"10.12677/ijfd.2023.111001","DOIUrl":"https://doi.org/10.12677/ijfd.2023.111001","url":null,"abstract":"In this paper, the high-temperature dust removal and separation performance of cyclone separator is numerically studied, and the effects of inlet velocity, temperature, particle density and shell thermal boundary conditions on the dust removal efficiency of cyclone separator are explored. The results showed that when the inlet flow rate was constant, the separation efficiency decreased by 8.62% at 900 K compared with 600 K. When the temperature is constant, the separation effi-王国林","PeriodicalId":66025,"journal":{"name":"流体动力学","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66099100","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}
Pub Date : 2023-01-01DOI: 10.12677/ijfd.2023.112004
明海 刘
In order to study the pedestrian wind environment in the out-corridor of high-rise buildings, a series of CFD simulations were carried out. The results show that when the wind direction is perpendicular to the building surface, the wind speed in the pedestrian area of the outer corridor is relatively small, and gradually increases with the increase of wind direction angle. The maximum wind speed usually occurs in the corner area of the outer corridor. Meanwhile, the wind speed increases with the width of the corridor increases, and decreases with the height of the corridor
{"title":"Study on Pedestrian Wind Environment in Out-Corridor of High-Rise Building","authors":"明海 刘","doi":"10.12677/ijfd.2023.112004","DOIUrl":"https://doi.org/10.12677/ijfd.2023.112004","url":null,"abstract":"In order to study the pedestrian wind environment in the out-corridor of high-rise buildings, a series of CFD simulations were carried out. The results show that when the wind direction is perpendicular to the building surface, the wind speed in the pedestrian area of the outer corridor is relatively small, and gradually increases with the increase of wind direction angle. The maximum wind speed usually occurs in the corner area of the outer corridor. Meanwhile, the wind speed increases with the width of the corridor increases, and decreases with the height of the corridor","PeriodicalId":66025,"journal":{"name":"流体动力学","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66099989","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}
Pub Date : 2023-01-01DOI: 10.12677/ijfd.2023.112005
国剑 纪
In order to reveal the mechanism of fragmentation during the interaction between high-temperature
{"title":"Numerical Simulation of Hydraulic Fragmentation of High-Temperature Molten Tin Based on OpenFOAM","authors":"国剑 纪","doi":"10.12677/ijfd.2023.112005","DOIUrl":"https://doi.org/10.12677/ijfd.2023.112005","url":null,"abstract":"In order to reveal the mechanism of fragmentation during the interaction between high-temperature","PeriodicalId":66025,"journal":{"name":"流体动力学","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66099743","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}
Pub Date : 2022-01-01DOI: 10.12677/ijfd.2022.103003
静远 杨
With the result of direct numerical simulation on cylindrical flow, it was discussed of the differences of Reynolds stress between that from prediction of k-epsilon model and that from realistic velocity of flow. It was found that the Reynolds stress tends to be weakened in the area behind the cylinder
{"title":"A Review of Weakening of Reynolds Stress in Cylindrical Flow","authors":"静远 杨","doi":"10.12677/ijfd.2022.103003","DOIUrl":"https://doi.org/10.12677/ijfd.2022.103003","url":null,"abstract":"With the result of direct numerical simulation on cylindrical flow, it was discussed of the differences of Reynolds stress between that from prediction of k-epsilon model and that from realistic velocity of flow. It was found that the Reynolds stress tends to be weakened in the area behind the cylinder","PeriodicalId":66025,"journal":{"name":"流体动力学","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66099380","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}
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