Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences最新文献_第10页

Introducing the iceAccretionFoam solver: impingement and rime ice. 介绍iceAccretionFoam解决方案：撞击和时间冰。

IF 4.3 3区综合性期刊

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences Pub Date : 2025-07-17 DOI: 10.1098/rsta.2024.0362

Jayme Rodrigues Teixeira da Silva, Pedro Castro de Souza Villela, Caio Fuzaro Rafael, Guilherme Araujo Lima da Silva, Hrvoje Jasak

引用次数: 0

The origin of quantum mechanical statistics: some insights from research on human language. 量子力学统计的起源：来自人类语言研究的一些见解。

IF 4.3 3区综合性期刊

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences Pub Date : 2025-07-17 DOI: 10.1098/rsta.2023.0285

Diederik Aerts, Jonito Aerts Arguelles, Lester Beltran, Massimiliano Sassoli de Bianchi, Sandro Sozzo

{"title":"The origin of quantum mechanical statistics: some insights from research on human language.","authors":"Diederik Aerts, Jonito Aerts Arguelles, Lester Beltran, Massimiliano Sassoli de Bianchi, Sandro Sozzo","doi":"10.1098/rsta.2023.0285","DOIUrl":"https://doi.org/10.1098/rsta.2023.0285","url":null,"abstract":"Identical systems, or 'entities', are 'indistinguishable' in quantum mechanics (QM), and the 'symmetrization postulate' rules the possible statistical distributions of a large number of identical quantum entities. However, a thorough analysis of the historical development of QM attributes the origin of quantum statistics, in particular, 'Bose-Einstein statistics', to a lack of statistical independence of the micro-states of identical quantum entities. We have recently identified Bose-Einstein statistics in the combination of words in large texts, as a consequence of the 'entanglement' created by the meaning carried by words when they combine in human language. Relying on this investigation, we put forward the hypothesis that entanglement, hence the lack of statistical independence, is due to a 'mechanism of contextual updating', which provides deeper reasons for the appearance of Bose-Einstein statistics in human language. However, this investigation also contributes to a better understanding of the origin of quantum mechanical statistics in physics. Finally, we provide new insights into the 'intrinsically random behaviour of microscopic entities' that is generally assumed within classical statistical mechanics.This article is part of the theme issue 'Newton, Principia, Newton Geneva Edition (17th-19th) and modern Newtonian mechanics: heritage, past & present'.","PeriodicalId":19879,"journal":{"name":"Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences","volume":"383 2301","pages":"20230285"},"PeriodicalIF":4.3,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144650076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of the growth and freezing of condensate droplets on the initial frost thickness and density of cold surfaces. 凝结水液滴的生长和冻结对冷表面初始霜厚和密度的影响。

IF 4.3 3区综合性期刊

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences Pub Date : 2025-07-17 DOI: 10.1098/rsta.2024.0360

Ellyn Harges, Lorenzo Cremaschi

{"title":"Effects of the growth and freezing of condensate droplets on the initial frost thickness and density of cold surfaces.","authors":"Ellyn Harges, Lorenzo Cremaschi","doi":"10.1098/rsta.2024.0360","DOIUrl":"https://doi.org/10.1098/rsta.2024.0360","url":null,"abstract":"When humid air passing over the evaporator fins of air-source heat-pump systems makes contact with a surface with a temperature less than, but near, the triple point of water, condensation frosting occurs in three distinct stages: droplet growth and freezing, crystal growth and full growth. This paper presents a new model for droplet growth and freezing as part of a three-stage frosting model for condensation frosting conditions. During this study, the droplet growth and freezing model was validated individually and as part of the overall model using data gathered under conditions typical of heat-pump operation. The model results indicated that both the cold surface temperature and the relative humidity affected the droplet growth stage, though the cold surface temperature had the greater impact. The difference between the lengths of droplet growth stages across a 6°C surface temperature range was greater than 20 min, while it was approximately 5 min across a relative humidity range of 30%. The droplet growth stage significantly affected the remaining stages of frost growth by determining the thicknesses, densities and times at which the subsequent stage transitions occurred. Thus, this initial droplet growth and freezing stage should not be ignored in comprehensive condensation frosting models.This article is part of the theme issue 'Heat and mass transfer in frost and ice'.","PeriodicalId":19879,"journal":{"name":"Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences","volume":"383 2301","pages":"20240360"},"PeriodicalIF":4.3,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144650091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Newtonian Mechanics in research and design of motion assisting devices. 运动辅助装置研究与设计中的牛顿力学。

IF 4.3 3区综合性期刊

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences Pub Date : 2025-07-17 DOI: 10.1098/rsta.2023.0287

Marco Ceccarelli

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Advances in defrosting: exploring the use of surface treatment to promote frost layer delamination. 除霜进展：探索利用表面处理促进霜层分层。

IF 4.3 3区综合性期刊

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences Pub Date : 2025-07-17 DOI: 10.1098/rsta.2024.0359

Andrew Sommers, Nickolas Schmiesing, Giancarlo Corti

{"title":"Advances in defrosting: exploring the use of surface treatment to promote frost layer delamination.","authors":"Andrew Sommers, Nickolas Schmiesing, Giancarlo Corti","doi":"10.1098/rsta.2024.0359","DOIUrl":"https://doi.org/10.1098/rsta.2024.0359","url":null,"abstract":"This work explores defrosting effectiveness of aluminium surfaces of differing wettability, achieved through the application of surface micropatterning, two different silane coatings and/or a novel silica nanospring (SN) coating. Testing was performed on each sample within a controlled environmental chamber at a prescribed relative humidity and surface temperature and consisted of three cycles each of 1-h frost growth and 10 min of defrosting. Overall, surface defrosting effectiveness ranged from 42% to 96% across all tests. The data shows only small differences (typically 5-7%) in defrosting effectiveness between samples possessing either a self-assembled monolayer silane coating or microchannels alone. Furthermore, the microchannel surface with the superhydrophobic silane coating removed only slightly more water (typically 4-5%) during defrosting as compared with the uncoated microchannel surface although higher defrosting percentages (i.e. 9-10% higher) were occasionally recorded. By contrast, surfaces with the novel SN coating consistently exhibited more complete defrosting and drainage performance over other surfaces. Moreover, surfaces combining the microchannels and a SN coating exhibited a unique defrosting characteristic, 'frost layer delamination', in which large sheets of frost detached from the surface during defrosting. As a result, this surface exhibited superior defrosting performance, reaching 94-96% effectiveness in some cycles.This article is part of the theme issue 'Heat and mass transfer in frost and ice'.","PeriodicalId":19879,"journal":{"name":"Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences","volume":"383 2301","pages":"20240359"},"PeriodicalIF":4.3,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144650087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A rigorous framework for an improved Messinger/Myers model of ice accretion under conditions of variable property and unsteady aircraft icing. 变性质非定常飞机结冰条件下改进的Messinger/Myers模型的严格框架。

IF 4.3 3区综合性期刊

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences Pub Date : 2025-07-17 DOI: 10.1098/rsta.2024.0367

Hashnayne Ahmed, Arash Shad, Nadim Zgheib, S A Sherif, S Balachandar

{"title":"A rigorous framework for an improved Messinger/Myers model of ice accretion under conditions of variable property and unsteady aircraft icing.","authors":"Hashnayne Ahmed, Arash Shad, Nadim Zgheib, S A Sherif, S Balachandar","doi":"10.1098/rsta.2024.0367","DOIUrl":"10.1098/rsta.2024.0367","url":null,"abstract":"We analyse the Messinger/Myers model by critically evaluating simplifying assumptions through a rigorous formulation of the rime ice accretion process. We explore the effects of both constant and variable ice density and thermal conductivity, along with the effects of sublimation from the ice surface. The effects of key factors such as droplet impact rate, ambient temperature relative to the freezing temperature and the temperature difference between the ambient air and the airfoil surface are examined. Under these varying conditions, the present rigorous formulation is used to assess the significance of unsteady effects, variable ice properties and sublimation. We observe that the Myers model performs remarkably well in certain icing situations and analyse the reasons for this strong performance. We also show that partially relaxing the model's assumptions can lead to poorer performance. The Myers model can lead to overprediction of ice surface temperature and correspondingly underprediction of transition time under conditions of relatively weak sublimation and surface cooling. A modified Myers model is presented, which can be used to recover near-perfect results under widely varying icing conditions of relevance.This article is part of the theme issue 'Heat and mass transfer in frost and ice'.","PeriodicalId":19879,"journal":{"name":"Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences","volume":"383 2301","pages":"20240367"},"PeriodicalIF":4.3,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12289204/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144650086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Technical Advisory Group on the Structural Integrity review of the fatigue crack growth approach to transient cycles and other parameters used. 技术顾问组对结构完整性审查疲劳裂纹扩展方法采用瞬态循环等参数。

IF 4.3 3区综合性期刊

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences Pub Date : 2025-07-03 DOI: 10.1098/rsta.2024.0174

Anthony Horn, Peter James, Peter Budden, Keith Wright, Mike Nielsen

{"title":"Technical Advisory Group on the Structural Integrity review of the fatigue crack growth approach to transient cycles and other parameters used.","authors":"Anthony Horn, Peter James, Peter Budden, Keith Wright, Mike Nielsen","doi":"10.1098/rsta.2024.0174","DOIUrl":"https://doi.org/10.1098/rsta.2024.0174","url":null,"abstract":"TAGSI is the UK Technical Advisory Group for the Structural Integrity of high-integrity components (HICs) and has a role in reviewing specific technical questions from its sponsors through peer review utilizing independent experts. EDF-Nuclear Services (NS) asked TAGSI to review some proposed optimizations for calculating fatigue crack growth (FCG) and to provide some further insight into the basis of certain relevant parameters. The areas covered were as follows: numerical approaches to FCG evaluation using elastic-plastic cracked-body finite-element (FE) methods; the function of R-ratio term f(R) in RSE-M for ΔKeff; and a new proposal for ordering and pairing transients aligned with plant operating conditions (POCs), referred to as the POC approach. This paper provides an overview of the review and associated discussions to address these questions. The main findings were as follows: TAGSI considers that the use of the ΔJ parameter for estimating FCG in the elastic-plastic regime is consistent with UK guidance, though some caveats and points for consideration were noted. Although the basis for the f(R) term in RSE-M is not well documented, some suggestions were made for how this may be better understood and developed. The POC method adopts a different approach to traditional methods for both the ordering and pairing of transients. TAGSI considers that the chronological POC approach (when including a modification, POC-mod, to combine start-up and shutdown transients) is an appropriate method for the ordering of transients for assessment. Some areas of non-conservatism were noted, to be assessed on a case-by-case basis.This article is part of the theme issue 'Future challenges for structural integrity of high-integrity components'.","PeriodicalId":19879,"journal":{"name":"Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences","volume":"383 2300","pages":"20240174"},"PeriodicalIF":4.3,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144554099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Protection against manufacturing defects for the safety case of an IoF nuclear component. 对IoF核部件安全外壳的制造缺陷保护。

IF 4.3 3区综合性期刊

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences Pub Date : 2025-07-03 DOI: 10.1098/rsta.2024.0177

John Wintle, Karen Stone, Paul Woollin

{"title":"Protection against manufacturing defects for the safety case of an IoF nuclear component.","authors":"John Wintle, Karen Stone, Paul Woollin","doi":"10.1098/rsta.2024.0177","DOIUrl":"https://doi.org/10.1098/rsta.2024.0177","url":null,"abstract":"The paper addresses two questions raised in relation to a TAGSI multi-legged safety case for Incredibility of Failure components in nuclear power plant, specifically in relation to calculation of tolerance to manufacturing defects, which are typically most significant at welds. Calculation is referred to as the Failure Analysis leg of the safety case. There are locations where the start of life target safety margin of 2, expressed as the Validation Factor (VF), can no longer be claimed after a period of service for a postulated defect with a through wall extent equal to that of the inspection validation defect used to independently qualify the manufacturing inspections. If justified, changes to the size and aspect ratio of postulated defects could allow achievement of a VF of 2 in support of life extension, as follows: (i) by reducing the size of the postulated defect from the validation defect size to a smaller size that has demonstrated high capability of detection, and (ii) excluding postulated defects with higher aspect ratios from the Failure Analysis, which although often presenting the limiting position, can be difficult to conceive from the welding processes used.This article is part of the theme issue 'Future challenges for structural integrity of high-integrity components'.","PeriodicalId":19879,"journal":{"name":"Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences","volume":"383 2300","pages":"20240177"},"PeriodicalIF":4.3,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144554098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Future challenges for structural integrity of high-Iintegrity components. 高完整性构件结构完整性的未来挑战。

IF 4.3 3区综合性期刊

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences Pub Date : 2025-07-03 DOI: 10.1098/rsta.2024.0181

John Kenneth Sharples, Robert Ainsworth

引用次数: 0

Development and observations on the multi-legged structural integrity safety case. 多腿结构完整性安全箱的研制与观察。

IF 4.3 3区综合性期刊

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences Pub Date : 2025-07-03 DOI: 10.1098/rsta.2024.0179

Steve Garwood, Adrian Allen, David Duxbury, Julian Emslie, Michael Martin, Neil Shallcross

{"title":"Development and observations on the multi-legged structural integrity safety case.","authors":"Steve Garwood, Adrian Allen, David Duxbury, Julian Emslie, Michael Martin, Neil Shallcross","doi":"10.1098/rsta.2024.0179","DOIUrl":"https://doi.org/10.1098/rsta.2024.0179","url":null,"abstract":"The principles for the assessment of the structural integrity of nuclear components were published by TAGSI in 2001 with the adoption of a multi-legged approach. This was based on work in the 1990s, to aid the development of UK 'conceptual defence in depth' safety cases relating to 'incredibility of failure' components. Since 2001, multi-legged approaches have been used for assessments of the design, the construction and operation of nuclear power plants in the UK, with the approach also adopted for proposed UK-based nuclear power generation design safety cases. Over time, nuclear design and construction codes have improved strengthening arguments relating to design and manufacture. For example, the value of the proof test has reduced as modern pressure retaining components are expected to be less sensitive to defects, and less likely to have such defects present, than components manufactured decades ago. In considering the recent generic design assessments, several applications have rearranged the scope and number of legs in the 'conceptual defence in depth' safety cases. Noting application and developments since the original proposal, it is observed that a generalized three-legged model is more appropriate for a new plant, while remaining consistent with the original TAGSI principles and multi-legged proposal.This article is part of the theme issue 'Future challenges for structural integrity of high-integrity components'.","PeriodicalId":19879,"journal":{"name":"Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences","volume":"383 2300","pages":"20240179"},"PeriodicalIF":4.3,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144554142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0