Xiaofeng Yang, Wei Tang, Yanxia Du, Lei Liu, Yewei Gui
{"title":"Flow/Surface-Reaction Interaction and Heat Transfer Characteristics for High-Enthalpy and Dissociated Gaseous Carbon-Oxygen Mixture","authors":"Xiaofeng Yang, Wei Tang, Yanxia Du, Lei Liu, Yewei Gui","doi":"10.2514/6.2018-4069","DOIUrl":"https://doi.org/10.2514/6.2018-4069","url":null,"abstract":"","PeriodicalId":423948,"journal":{"name":"2018 Joint Thermophysics and Heat Transfer Conference","volume":"13 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116216289","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}
{"title":"Computational Investigation of Aerodynamic and Heat Transfer Characteristics of a Confined Offset Turbulent Jet Impinging on a Flat Surface","authors":"S. Manoharan, Wael A. Mokhtar","doi":"10.2514/6.2018-4185","DOIUrl":"https://doi.org/10.2514/6.2018-4185","url":null,"abstract":"","PeriodicalId":423948,"journal":{"name":"2018 Joint Thermophysics and Heat Transfer Conference","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123325643","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}
{"title":"Study of Film Cooling Performance for Turbine Blade Trailing Edge with Different V-Shaped Rib Orientation","authors":"Lin Ye, Cun-liang Liu, Hai-yong Liu, G. Xie","doi":"10.2514/6.2018-4074","DOIUrl":"https://doi.org/10.2514/6.2018-4074","url":null,"abstract":"","PeriodicalId":423948,"journal":{"name":"2018 Joint Thermophysics and Heat Transfer Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126112755","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}
Carbon clusters and hydrocarbons are constituents of the pyrolysis gases injected into the boundary layer of a space vehicle with a carbonaceous heat shield. These molecules have absorption spectra in the VUV and UV region that match the emission spectra of atomic nitrogen and oxygen. Hence, they can potentially absorb the radiation impinging on the heat shield of the space vehicle. This paper studies the ground state thermochemical properties and low-lying excited electronic states of potential radiation absorbing molecules present in the boundary layer using ab initio quantum chemistry meth-ods. These results provide a more accurate prediction of the radiative heat flux on the surface which can lead to improvement in the design of the thermal protection system
{"title":"Calculation of Thermochemical Properties of Carbon-cluster Ablation Species","authors":"M. Priyadarshini, R. Jaffe, A. Munafò, M. Panesi","doi":"10.2514/6.2018-4179","DOIUrl":"https://doi.org/10.2514/6.2018-4179","url":null,"abstract":"Carbon clusters and hydrocarbons are constituents of the pyrolysis gases injected into the boundary layer of a space vehicle with a carbonaceous heat shield. These molecules have absorption spectra in the VUV and UV region that match the emission spectra of atomic nitrogen and oxygen. Hence, they can potentially absorb the radiation impinging on the heat shield of the space vehicle. This paper studies the ground state thermochemical properties and low-lying excited electronic states of potential radiation absorbing molecules present in the boundary layer using ab initio quantum chemistry meth-ods. These results provide a more accurate prediction of the radiative heat flux on the surface which can lead to improvement in the design of the thermal protection system","PeriodicalId":423948,"journal":{"name":"2018 Joint Thermophysics and Heat Transfer Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130099829","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}
{"title":"Characteristic Pressure Rise with Temperature Increase in Liquid-Locked Hydrazine Systems for Satellite Refueling","authors":"M. Kandula, Brian M. Nufer","doi":"10.2514/6.2018-3912","DOIUrl":"https://doi.org/10.2514/6.2018-3912","url":null,"abstract":"","PeriodicalId":423948,"journal":{"name":"2018 Joint Thermophysics and Heat Transfer Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124989486","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}
RT Penty Geraets, M. McGilvray, P. Shah, Bao Williams
Two methods for calculating surface heat transfer rates from sub-surface temperature measurements are detailed for a robust fast-response gauge, designed for use in high enthalpy hypersonic ground test facilities. One method treats the gauge as a calorimeter, and the second is a pseudo non-linear version of the Sequential Function Specification Method algorithm, which calculates surface heat transfer by deconvolving the unit impulse response of the gauge out of a measured temperature. An experiment to find the impulse response of the gauge using a short duration pulsed laser to apply a heat flux to the surface of the gauge is performed. The response at three initial temperatures is recorded to characterise variation in thermal properties as a function of temperature. The use of the experimentally determined unit impulse response in the calculation of surface heat transfer can significantly reduce measurement uncertainty by removing the need to assume physical geometry and material properties of the gauge.
{"title":"Laser-based Calibration and Processing Technique for a Robust Fast-Response Surface Heat Transfer Gauge","authors":"RT Penty Geraets, M. McGilvray, P. Shah, Bao Williams","doi":"10.2514/6.2018-3772","DOIUrl":"https://doi.org/10.2514/6.2018-3772","url":null,"abstract":"Two methods for calculating surface heat transfer rates from sub-surface temperature measurements are detailed for a robust fast-response gauge, designed for use in high enthalpy hypersonic ground test facilities. One method treats the gauge as a calorimeter, and the second is a pseudo non-linear version of the Sequential Function Specification Method algorithm, which calculates surface heat transfer by deconvolving the unit impulse response of the gauge out of a measured temperature. An experiment to find the impulse response of the gauge using a short duration pulsed laser to apply a heat flux to the surface of the gauge is performed. The response at three initial temperatures is recorded to characterise variation in thermal properties as a function of temperature. The use of the experimentally determined unit impulse response in the calculation of surface heat transfer can significantly reduce measurement uncertainty by removing the need to assume physical geometry and material properties of the gauge.","PeriodicalId":423948,"journal":{"name":"2018 Joint Thermophysics and Heat Transfer Conference","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116181219","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}
Alexander L. Brown, J. Engerer, A. Ricks, J. Christian
{"title":"Scale Dependence of Material Response at Extreme Incident Radiative Heat Flux","authors":"Alexander L. Brown, J. Engerer, A. Ricks, J. Christian","doi":"10.2514/6.2018-3762","DOIUrl":"https://doi.org/10.2514/6.2018-3762","url":null,"abstract":"","PeriodicalId":423948,"journal":{"name":"2018 Joint Thermophysics and Heat Transfer Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128079904","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}
{"title":"Development of a Coupled Thermo-elastic Solver for Modeling Woven Thermal Protection Systems","authors":"David Z. Dang, E. Stern, I. Boyd","doi":"10.2514/6.2018-3270","DOIUrl":"https://doi.org/10.2514/6.2018-3270","url":null,"abstract":"","PeriodicalId":423948,"journal":{"name":"2018 Joint Thermophysics and Heat Transfer Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114078784","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}
E. Khalil, W. Abdelmaksoud, Alaa E. Mahfouz, A. Fahim
{"title":"Computational Heat Transfer Characteristics and Flow Regimes inside a Heat Exchanger Tube Fitted With Swirl Inserts","authors":"E. Khalil, W. Abdelmaksoud, Alaa E. Mahfouz, A. Fahim","doi":"10.2514/6.2018-4072","DOIUrl":"https://doi.org/10.2514/6.2018-4072","url":null,"abstract":"","PeriodicalId":423948,"journal":{"name":"2018 Joint Thermophysics and Heat Transfer Conference","volume":"192 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113997545","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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