Pub Date : 2019-02-11DOI: 10.33257/phchgd.19.4.783
A. Kryuchkova
{"title":"Numerical simulation of supersonic flows over ballistic models using UST3D programming code","authors":"A. Kryuchkova","doi":"10.33257/phchgd.19.4.783","DOIUrl":"https://doi.org/10.33257/phchgd.19.4.783","url":null,"abstract":"","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132230327","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 : 2019-02-11DOI: 10.33257/PHCHGD.19.4.756
A. Postnikov, V. Vinogradov, D. V. Komratov, V. Stepanov, A. Skryabin
{"title":"Study of subsonic input device, integrated with aircraft glider","authors":"A. Postnikov, V. Vinogradov, D. V. Komratov, V. Stepanov, A. Skryabin","doi":"10.33257/PHCHGD.19.4.756","DOIUrl":"https://doi.org/10.33257/PHCHGD.19.4.756","url":null,"abstract":"","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132534234","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 : 2019-02-11DOI: 10.33257/phchgd.19.4.775
V. Vlasov, Korolev Moscow Region Russia Fgup «TSNIImash», G. Zalogin, R. Kovalev
Numerical results of plasma flow parameter studies a represented in the paper for a high temperature facility with inductively coupled 1 MWt power plasmatorch (RF-plasmatron) operating with different work gases. Argon, nitrogen, air and carbon dioxide/nitrogen mixture (corresponding to Martian atmosphere) were chosen for the study. Modelling the problem of discharge chamber flow was based on mutual consideration of Navier ‒ Stokes and Maxwell equations at given mass flow rates (G = 5 ÷ 30 g/s) over pressure range of р = 10 ÷ 200 mbar and delivered power (energy supply) of N = 50 ÷ 300 kWt. Values of parameters at the discharge chamber exit (Fig. 1) were used then for computation of flow in the work chamber and around test models and probes (Fig. 2). Gas mixture models accounting for nonequilibrium thermochemical processes were utilized under solution of the problems. Developed soft ware is used for both plasma flow diagnostics and interpretation of tests on heat transfer, specification of thermal stability and catalicity of heat shield materials.
{"title":"Numerical modeling of flows of different plasma constituting gases in RF-plasmatron facility","authors":"V. Vlasov, Korolev Moscow Region Russia Fgup «TSNIImash», G. Zalogin, R. Kovalev","doi":"10.33257/phchgd.19.4.775","DOIUrl":"https://doi.org/10.33257/phchgd.19.4.775","url":null,"abstract":"Numerical results of plasma flow parameter studies a represented in the paper for a high temperature facility with inductively coupled 1 MWt power plasmatorch (RF-plasmatron) operating with different work gases. Argon, nitrogen, air and carbon dioxide/nitrogen mixture (corresponding to Martian atmosphere) were chosen for the study. Modelling the problem of discharge chamber flow was based on mutual consideration of Navier ‒ Stokes and Maxwell equations at given mass flow rates (G = 5 ÷ 30 g/s) over pressure range of р = 10 ÷ 200 mbar and delivered power (energy supply) of N = 50 ÷ 300 kWt. Values of parameters at the discharge chamber exit (Fig. 1) were used then for computation of flow in the work chamber and around test models and probes (Fig. 2). Gas mixture models accounting for nonequilibrium thermochemical processes were utilized under solution of the problems. Developed soft ware is used for both plasma flow diagnostics and interpretation of tests on heat transfer, specification of thermal stability and catalicity of heat shield materials.","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114427951","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 : 2019-02-11DOI: 10.33257/PHCHGD.19.4.772
Elena Yuryevna Arhireeva, B. N. Dankov, A. Panasenko
The results of mathematical modeling of viscous gas flow in a flat channel separated by perforated walls on the base of Navier ‒ Stokes equations with Reynolds number 10 6 are presented. The presence of perforated walls leads to the formation of a complex vortex flow around them.
{"title":"Results of calculation of transonic gas flow in a flat channel separated by perforated walls","authors":"Elena Yuryevna Arhireeva, B. N. Dankov, A. Panasenko","doi":"10.33257/PHCHGD.19.4.772","DOIUrl":"https://doi.org/10.33257/PHCHGD.19.4.772","url":null,"abstract":"The results of mathematical modeling of viscous gas flow in a flat channel separated by perforated walls on the base of Navier ‒ Stokes equations with Reynolds number 10 6 are presented. The presence of perforated walls leads to the formation of a complex vortex flow around them.","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124032236","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 : 2018-12-13DOI: 10.33257/PHCHGD.19.3.748
I. Ivanov, M. Kotov, L. Ruleva, S. F. Solodovnikov
Presents the results of calculation and experimental research of an elongated nozzle block hypersonic aerodynamic shock tube of the laboratory of radiation gas dynamics IPMech RAS. The standard hypersonic conical nozzle was converted into an elongated nozzle with the form of the removable nozzle. The quasi-stationary gas flow through a new elongated nozzle block and the formation of a near-to-nozzle field of gas-dynamic parameters in a jet in a vacuum chamber are calculated. The braking pressures of the hypersonic flow at different distances from the nozzle section in the normal operation modes of the unit are experimentally measured. The calculated and experimentally measured braking pressures at the outlet of the elongated nozzle were compared, which showed a satisfactory match.
{"title":"The functioning of a removable elongated nozzle in the Hypersonic Aerodynamic Shock Tube","authors":"I. Ivanov, M. Kotov, L. Ruleva, S. F. Solodovnikov","doi":"10.33257/PHCHGD.19.3.748","DOIUrl":"https://doi.org/10.33257/PHCHGD.19.3.748","url":null,"abstract":"Presents the results of calculation and experimental research of an elongated nozzle block hypersonic aerodynamic shock tube of the laboratory of radiation gas dynamics IPMech RAS. The standard hypersonic conical nozzle was converted into an elongated nozzle with the form of the removable nozzle. The quasi-stationary gas flow through a new elongated nozzle block and the formation of a near-to-nozzle field of gas-dynamic parameters in a jet in a vacuum chamber are calculated. The braking pressures of the hypersonic flow at different distances from the nozzle section in the normal operation modes of the unit are experimentally measured. The calculated and experimentally measured braking pressures at the outlet of the elongated nozzle were compared, which showed a satisfactory match.","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130914890","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 : 2018-12-13DOI: 10.33257/PHCHGD.19.3.769
N. Rubtsov, G. I. Tsvetkov, V. I. Chernysh, K. Troshin
{"title":"Interaction of the flames of diluted methane-oxygen mixtures with obstacles of conical shape","authors":"N. Rubtsov, G. I. Tsvetkov, V. I. Chernysh, K. Troshin","doi":"10.33257/PHCHGD.19.3.769","DOIUrl":"https://doi.org/10.33257/PHCHGD.19.3.769","url":null,"abstract":"","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115507161","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 : 2018-12-13DOI: 10.33257/PHCHGD.19.3.749
V. G. Matveev, A. Molokanov, L. Yanovskiy, Fireworks
A set of programs has been created; it allows to carry out the thermodynamic analysis and kinetic computation of complex chemical reactions. A minimum mechanism describing the combustion kinetics of hydrogen is determined; the mechanism was used to solve an inverse task of finding parameters describing the experimental data of Kowalski at pressures of 7.4, 7.1, 6.8, 6.4 and 6.1 mm Hg. All obtained constants of direct and inverse reactions are interrelated by thermodynamic equilibrium constants. The parameters obtained for the maximum hydrogen combustion mechanism make it possible to describe well the ignition limits in Lewis and Egerton experiments. In carrying out further thermodynamic analysis, a minimal mechanism M-I is identified that corresponds to the maximum mechanism and with good accuracy describing the critical conditions of hydrogen combustion in the pressure interval 1 ÷ 200 mm Hg and temperatures of 400°C ÷ 600 °C. From the analysis of critical conditions, an analytical equation is obtained; roots of the equation give ignition limits close to the experimental ones.
制定了一系列计划;它允许进行复杂化学反应的热力学分析和动力学计算。确定了描述氢燃烧动力学的最小机理;利用该机制求解了在7.4、7.1、6.8、6.4和6.1 mm Hg压力下的科瓦尔斯基实验数据的反求参数。所得的正反反应常数均与热力学平衡常数相关。所得的最大氢燃烧机理参数可以很好地描述Lewis和Egerton实验中的点火极限。在进一步的热力学分析中，确定了最小机制M-I，该机制对应于最大机制，并且具有良好的精度，描述了压力区间1 ÷ 200 mm Hg和温度400°C ÷ 600°C下氢气燃烧的临界条件。通过对临界条件的分析，得到了解析方程;方程的根给出了接近实验的点火极限。
{"title":"Application of thermodynamic analysis in reducing detailed hydrogen combustion mechanism","authors":"V. G. Matveev, A. Molokanov, L. Yanovskiy, Fireworks","doi":"10.33257/PHCHGD.19.3.749","DOIUrl":"https://doi.org/10.33257/PHCHGD.19.3.749","url":null,"abstract":"A set of programs has been created; it allows to carry out the thermodynamic analysis and kinetic computation of complex chemical reactions. A minimum mechanism describing the combustion kinetics of hydrogen is determined; the mechanism was used to solve an inverse task of finding parameters describing the experimental data of Kowalski at pressures of 7.4, 7.1, 6.8, 6.4 and 6.1 mm Hg. All obtained constants of direct and inverse reactions are interrelated by thermodynamic equilibrium constants. The parameters obtained for the maximum hydrogen combustion mechanism make it possible to describe well the ignition limits in Lewis and Egerton experiments. In carrying out further thermodynamic analysis, a minimal mechanism M-I is identified that corresponds to the maximum mechanism and with good accuracy describing the critical conditions of hydrogen combustion in the pressure interval 1 ÷ 200 mm Hg and temperatures of 400°C ÷ 600 °C. From the analysis of critical conditions, an analytical equation is obtained; roots of the equation give ignition limits close to the experimental ones.","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127963749","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 : 2018-12-13DOI: 10.33257/PHCHGD.19.3.765
O. Kunova, E. Kustova, M. Melnik, A. Savelev
{"title":"Validation of Models of State-to-State Oxygen Kinetics behind Shock Waves","authors":"O. Kunova, E. Kustova, M. Melnik, A. Savelev","doi":"10.33257/PHCHGD.19.3.765","DOIUrl":"https://doi.org/10.33257/PHCHGD.19.3.765","url":null,"abstract":"","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125192836","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 : 2018-12-13DOI: 10.33257/phchgd.19.3.773
A. Kroupnov, M. Pogosbekian
The mechanism of exchange reactions CO(X 1 + ) + N( 4 S) CN(X 2 + ) + O( 3 P), CO(X 1 + ) + N( 4 S) NO(X 2 ) + C( 3 P), CN(X 2 + ) + O( 3 P) NO(X 2 ) + C( 3 P), proceeding under the conditions of entry into the atmosphere of Mars, was investigated on the basis of DFT modeling. As a result of calculating the potential energy surface for the system under consideration, reaction paths, transition states, intermediate complexes and the corresponding vibration frequencies and energy characteristics were found. It is shown that the mechanisms of all reactions are multistage, and go through the formation of several consecutive intermediate complexes. The rate constants of all the elementary stages of the studied reactions were calculated in a wide temperature range.
{"title":"Investigation of exchange reactions CO + N, CN + O and NO + C mechanism for conditions of Mars atmosphere entries","authors":"A. Kroupnov, M. Pogosbekian","doi":"10.33257/phchgd.19.3.773","DOIUrl":"https://doi.org/10.33257/phchgd.19.3.773","url":null,"abstract":"The mechanism of exchange reactions CO(X 1 + ) + N( 4 S) CN(X 2 + ) + O( 3 P), CO(X 1 + ) + N( 4 S) NO(X 2 ) + C( 3 P), CN(X 2 + ) + O( 3 P) NO(X 2 ) + C( 3 P), proceeding under the conditions of entry into the atmosphere of Mars, was investigated on the basis of DFT modeling. As a result of calculating the potential energy surface for the system under consideration, reaction paths, transition states, intermediate complexes and the corresponding vibration frequencies and energy characteristics were found. It is shown that the mechanisms of all reactions are multistage, and go through the formation of several consecutive intermediate complexes. The rate constants of all the elementary stages of the studied reactions were calculated in a wide temperature range.","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128319411","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 : 2018-12-13DOI: 10.33257/PHCHGD.19.3.774
V. Vlasov, Korolev Moscow Region Russia Fgup «TSNIImash», G. Zalogin, R. Kovalev, N. F. Rudin
{"title":"Thermochemical model of СО2 +N2 mixture at high temperatures","authors":"V. Vlasov, Korolev Moscow Region Russia Fgup «TSNIImash», G. Zalogin, R. Kovalev, N. F. Rudin","doi":"10.33257/PHCHGD.19.3.774","DOIUrl":"https://doi.org/10.33257/PHCHGD.19.3.774","url":null,"abstract":"","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127703500","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：