Journal of Thermophysics and Heat Transfer, Ahead of Print.
热物理学和传热学杂志》，提前出版。
{"title":"Performance Estimation of a Capillary-Fed Evaporative Microthruster","authors":"Akshay Sharma, Tarun Singh, Pratikash Panda, Susmita Dash","doi":"10.2514/1.t7021","DOIUrl":"https://doi.org/10.2514/1.t7021","url":null,"abstract":"Journal of Thermophysics and Heat Transfer, Ahead of Print. <br/>","PeriodicalId":17482,"journal":{"name":"Journal of Thermophysics and Heat Transfer","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142254590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Journal of Thermophysics and Heat Transfer, Ahead of Print.
热物理学和传热学杂志》，提前出版。
{"title":"Transient Response Analysis in Spacecraft Thermal Protection Structures Under Periodic Thermal Disturbances","authors":"Wenzhuo Wang, Qing Ai, Zhihao Yu, Yong Shuai","doi":"10.2514/1.t7047","DOIUrl":"https://doi.org/10.2514/1.t7047","url":null,"abstract":"Journal of Thermophysics and Heat Transfer, Ahead of Print. <br/>","PeriodicalId":17482,"journal":{"name":"Journal of Thermophysics and Heat Transfer","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Journal of Thermophysics and Heat Transfer, Ahead of Print.
热物理学和传热学杂志》，提前出版。
{"title":"Magnetohydrodynamics Flow of Hybrid Nanofluid Rotating in Annulus Through Two Coaxial Cylinders","authors":"Brahim Mahfoud, Hibet Errahmane Mahfoud","doi":"10.2514/1.t7035","DOIUrl":"https://doi.org/10.2514/1.t7035","url":null,"abstract":"Journal of Thermophysics and Heat Transfer, Ahead of Print. <br/>","PeriodicalId":17482,"journal":{"name":"Journal of Thermophysics and Heat Transfer","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Journal of Thermophysics and Heat Transfer, Ahead of Print.
热物理学和传热学杂志》，提前出版。
{"title":"Characteristic Vibrational and Rotational Relaxation Times for Air Species from First-Principles Calculations","authors":"Erik Torres, Thomas E. Schwartzentruber","doi":"10.2514/1.t7042","DOIUrl":"https://doi.org/10.2514/1.t7042","url":null,"abstract":"Journal of Thermophysics and Heat Transfer, Ahead of Print. <br/>","PeriodicalId":17482,"journal":{"name":"Journal of Thermophysics and Heat Transfer","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Journal of Thermophysics and Heat Transfer, Ahead of Print.
热物理学和传热学杂志》，提前出版。
{"title":"Direct Validation of Approximate Models for Molecular Vibrational Transition","authors":"Yutaka Matsukawa","doi":"10.2514/1.t6904","DOIUrl":"https://doi.org/10.2514/1.t6904","url":null,"abstract":"Journal of Thermophysics and Heat Transfer, Ahead of Print. <br/>","PeriodicalId":17482,"journal":{"name":"Journal of Thermophysics and Heat Transfer","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Augustin C. Tibere-Inglesse, Thomas K. West, Christopher C. Jelloian, Nicolas Q. Minesi, R. Mitchell Spearrin, Justin Clarke, Luca di Mare, Matthew McGilvray, Brett A. Cruden
Journal of Thermophysics and Heat Transfer, Ahead of Print.
热物理学和传热学杂志》，提前出版。
{"title":"Reconstruction of Mars 2020 Backshell Radiative Heating via Infrared Emission Spectroscopy of CO2/N2/Ar Shockwaves","authors":"Augustin C. Tibere-Inglesse, Thomas K. West, Christopher C. Jelloian, Nicolas Q. Minesi, R. Mitchell Spearrin, Justin Clarke, Luca di Mare, Matthew McGilvray, Brett A. Cruden","doi":"10.2514/1.t6916","DOIUrl":"https://doi.org/10.2514/1.t6916","url":null,"abstract":"Journal of Thermophysics and Heat Transfer, Ahead of Print. <br/>","PeriodicalId":17482,"journal":{"name":"Journal of Thermophysics and Heat Transfer","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Michael Kroells, Sahadeo Ramjatan, Thomas E. Schwartzentruber
Journal of Thermophysics and Heat Transfer, Ahead of Print.
热物理学和传热学杂志》，提前出版。
{"title":"Aerothermal Loads on a Representative Porous Mesostructure at Flight Conditions Using Direct Simulation Monte Carlo","authors":"Michael Kroells, Sahadeo Ramjatan, Thomas E. Schwartzentruber","doi":"10.2514/1.t6894","DOIUrl":"https://doi.org/10.2514/1.t6894","url":null,"abstract":"Journal of Thermophysics and Heat Transfer, Ahead of Print. <br/>","PeriodicalId":17482,"journal":{"name":"Journal of Thermophysics and Heat Transfer","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141782416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Casey J. Broslawski, Ashley N. Moran, Simon W. North, Rodney D. W. Bowersox
Journal of Thermophysics and Heat Transfer, Ahead of Print.
热物理学和传热学杂志》，提前出版。
{"title":"Characterization of a Glow Discharge in a Tripped Hypersonic Boundary Layer","authors":"Casey J. Broslawski, Ashley N. Moran, Simon W. North, Rodney D. W. Bowersox","doi":"10.2514/1.t7017","DOIUrl":"https://doi.org/10.2514/1.t7017","url":null,"abstract":"Journal of Thermophysics and Heat Transfer, Ahead of Print. <br/>","PeriodicalId":17482,"journal":{"name":"Journal of Thermophysics and Heat Transfer","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141782418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mitchell R. Gosma, Caleb N. Harper, Lincoln N. Collins, Kelly A. Stephani, Jeffrey D. Engerer
Journal of Thermophysics and Heat Transfer, Ahead of Print.
热物理学和传热学杂志》，提前出版。
{"title":"Chemical Kinetics and Thermal Properties of Ablator Pyrolysis Products During Atmospheric Entry","authors":"Mitchell R. Gosma, Caleb N. Harper, Lincoln N. Collins, Kelly A. Stephani, Jeffrey D. Engerer","doi":"10.2514/1.t6921","DOIUrl":"https://doi.org/10.2514/1.t6921","url":null,"abstract":"Journal of Thermophysics and Heat Transfer, Ahead of Print. <br/>","PeriodicalId":17482,"journal":{"name":"Journal of Thermophysics and Heat Transfer","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141786078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Modern gas turbine engines require a sophisticated cooling system design to achieve higher power output and efficiency. This study investigates the potential effect of noncylindrical inlet geometries on the performance of laid-back, fan-shaped film-cooling holes using the pressure-sensitive paint measurement technique on a flat plate. On the basis of a common pattern of outlet geometry, racetrack-shaped inlet geometries with aspect ratios of 2:1 and 4:1 were tested along with traditional cylindrical inlets. The coolant flow conditions range from [Formula: see text] = 0.3–1.5 and DR = 1 and 2. The mainstream turbulence intensity is held at 6%. Test results show that the shaped inlets provide a higher area-averaged film-cooling effectiveness over the cylindrical inlet using the same amount of coolant. For the 2:1 inlet, an advantage of 20% higher effectiveness could be maintained for DR = 1, while for DR = 2 this advantage is reduced to 10%. For the 4:1 inlet, when the coolant momentum flux ratio [Formula: see text] < 0.5, a similar or slightly higher improvement can be obtained, but when [Formula: see text] > 1, the advantage diminishes with the growing I to approximately 5%, at [Formula: see text] = 2.25. Regarding discharge coefficients, the 2:1 inlet geometry is similar to the cylindrical inlet. For the 4:1 inlet, it is 2–5% lower or nearly equivalent.
现代燃气涡轮发动机需要复杂的冷却系统设计，以实现更高的功率输出和效率。本研究利用平板上的压敏涂料测量技术，研究了非圆柱形进气道几何形状对平铺式扇形薄膜冷却孔性能的潜在影响。在常见的出口几何形状基础上，测试了纵横比为 2:1 和 4:1 的赛道形入口几何形状以及传统的圆柱形入口。冷却剂流动条件为[公式：见正文] = 0.3-1.5 和 DR = 1 和 2。主流湍流强度保持在 6%。测试结果表明，在使用相同冷却剂量的情况下，异形进气口比圆柱形进气口具有更高的面积平均膜冷却效果。对于 2:1 的进气口，在 DR = 1 的情况下，可以保持高出 20% 的效率优势，而在 DR = 2 的情况下，这一优势降低到 10%。对于 4:1 进气口，当冷却剂动量通量比[计算公式：见正文]为 1 时，随着 I 的增大，[计算公式：见正文]= 2.25 时的优势减小到约 5%。关于排出系数，2:1 进气口的几何形状与圆柱形进气口相似。对于 4:1 的进气口，则低 2-5%，或几乎相等。
{"title":"Effect of Inlet Geometry on Film-Cooling Effectiveness from Shaped Holes","authors":"Hanlin Wang, Lesley M. Wright","doi":"10.2514/1.t6898","DOIUrl":"https://doi.org/10.2514/1.t6898","url":null,"abstract":"Modern gas turbine engines require a sophisticated cooling system design to achieve higher power output and efficiency. This study investigates the potential effect of noncylindrical inlet geometries on the performance of laid-back, fan-shaped film-cooling holes using the pressure-sensitive paint measurement technique on a flat plate. On the basis of a common pattern of outlet geometry, racetrack-shaped inlet geometries with aspect ratios of 2:1 and 4:1 were tested along with traditional cylindrical inlets. The coolant flow conditions range from [Formula: see text] = 0.3–1.5 and DR = 1 and 2. The mainstream turbulence intensity is held at 6%. Test results show that the shaped inlets provide a higher area-averaged film-cooling effectiveness over the cylindrical inlet using the same amount of coolant. For the 2:1 inlet, an advantage of 20% higher effectiveness could be maintained for DR = 1, while for DR = 2 this advantage is reduced to 10%. For the 4:1 inlet, when the coolant momentum flux ratio [Formula: see text] < 0.5, a similar or slightly higher improvement can be obtained, but when [Formula: see text] > 1, the advantage diminishes with the growing I to approximately 5%, at [Formula: see text] = 2.25. Regarding discharge coefficients, the 2:1 inlet geometry is similar to the cylindrical inlet. For the 4:1 inlet, it is 2–5% lower or nearly equivalent.","PeriodicalId":17482,"journal":{"name":"Journal of Thermophysics and Heat Transfer","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141646042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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