Pub Date : 1900-01-01DOI: 10.33257/phchgd.23.2.992
A. Bryzgalov
Validation studies on the heat fluxes on water-cooled catalytic surfaces in subsonic flows of high-temperature dissociated nitrogen are presented. Simulations are performed for the conditions of experiments performed in the IGP-4 plasmatron available in IPMech RAS for four operating powers and three test materials with known catalytic recombination coefficients. The computational model describes two-dimensional flow of chemically non-equilibrium nitrogen plasma. Stefan − Maxwell equations are applied to model multicomponent diffusion in the flow and on the catalytic surface. Reasonable agreement between the calculated and measured heat fluxes is demonstrated. It is shown that deviation of the results of the computational model from the ex-perimentally determined heat fluxes is generally within 15 % (the highest deviation is 29 %). Possible reasons for the deviation are discussed, and the dependence of heat fluxes on the kinetic scheme is demonstrated.
{"title":"Heat Transfer to Catalytic Surface in a Subsonic Jet of Nitrogen Plasma","authors":"A. Bryzgalov","doi":"10.33257/phchgd.23.2.992","DOIUrl":"https://doi.org/10.33257/phchgd.23.2.992","url":null,"abstract":"Validation studies on the heat fluxes on water-cooled catalytic surfaces in subsonic flows of high-temperature dissociated nitrogen are presented. Simulations are performed for the conditions of experiments performed in the IGP-4 plasmatron available in IPMech RAS for four operating powers and three test materials with known catalytic recombination coefficients. The computational model describes two-dimensional flow of chemically non-equilibrium nitrogen plasma. Stefan − Maxwell equations are applied to model multicomponent diffusion in the flow and on the catalytic surface. Reasonable agreement between the calculated and measured heat fluxes is demonstrated. It is shown that deviation of the results of the computational model from the ex-perimentally determined heat fluxes is generally within 15 % (the highest deviation is 29 %). Possible reasons for the deviation are discussed, and the dependence of heat fluxes on the kinetic scheme is demonstrated.","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127338119","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 : 1900-01-01DOI: 10.33257/phchgd.20.4.864
P. Silvestrov, O. Bessonov, A. Rybakov
This paper describes the general idea and the implementation of the Interactive information and modeling system – an integrated environment that combines computational modules for modeling the aerodynamics and aerothermodynamics of re-entry space vehicles with the large collection of different information materials on this topic. This system provides interactive mechanisms for performing numerical simulation of processes around a vehicle and analysis of the results. The paper describes and illustrates the internal organization and the composition of the system. Examples of the computational and information output are presented together with the simplified working scenario. The system has the unified implementation for Windows and Linux operation systems and can be deployed on any modern high-performance personal computer.
{"title":"A Concept of the Interactive Information and Modeling System for Gas Dynamics and Multidisciplinary Research","authors":"P. Silvestrov, O. Bessonov, A. Rybakov","doi":"10.33257/phchgd.20.4.864","DOIUrl":"https://doi.org/10.33257/phchgd.20.4.864","url":null,"abstract":"This paper describes the general idea and the implementation of the Interactive information and modeling system – an integrated environment that combines computational modules for modeling the aerodynamics and aerothermodynamics of re-entry space vehicles with the large collection of different information materials on this topic. This system provides interactive mechanisms for performing numerical simulation of processes around a vehicle and analysis of the results. The paper describes and illustrates the internal organization and the composition of the system. Examples of the computational and information output are presented together with the simplified working scenario. The system has the unified implementation for Windows and Linux operation systems and can be deployed on any modern high-performance personal computer.","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127186843","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 : 1900-01-01DOI: 10.33257/phchgd.20.4.843
V. Kuzenov, V. Shumaev
Тhe work is devoted to the theoretical calculation of the physical and technical characteristics of the combined effect of intense energy fluxes on the target in the magnetic inertial plasma confinement method. The results of calculating the effect of intense energy flows on a single-layer cylindrical target are presented. Based on these calculations, the possibility of creating compact neutron generators was evaluated. The new algorithm for numerically solving the “hyperbolic” and “parabolic” parts of the equations of plasma dynamics is briefly described.
{"title":"Development of Methods and Modeling of Individual Characteristics of the Target of Magnetic Inertial Synthesis under Combined Exposure","authors":"V. Kuzenov, V. Shumaev","doi":"10.33257/phchgd.20.4.843","DOIUrl":"https://doi.org/10.33257/phchgd.20.4.843","url":null,"abstract":"Тhe work is devoted to the theoretical calculation of the physical and technical characteristics of the combined effect of intense energy fluxes on the target in the magnetic inertial plasma confinement method. The results of calculating the effect of intense energy flows on a single-layer cylindrical target are presented. Based on these calculations, the possibility of creating compact neutron generators was evaluated. The new algorithm for numerically solving the “hyperbolic” and “parabolic” parts of the equations of plasma dynamics is briefly described.","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"19 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129317963","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 : 1900-01-01DOI: 10.33257/PHCHGD.22.1.902
I. Kryukov, I. Ivanov, E. Larina
The paper presents the experience of developing the hySol software package intended for numerical simulation of high–speed flows in the presence of a complex shock–wave structure. The used finite–difference scheme and software implementation are described. Examples of calculations are given.
{"title":"Software Package HySol for the Numerical Simulation of High-Speed Flows","authors":"I. Kryukov, I. Ivanov, E. Larina","doi":"10.33257/PHCHGD.22.1.902","DOIUrl":"https://doi.org/10.33257/PHCHGD.22.1.902","url":null,"abstract":"The paper presents the experience of developing the hySol software package intended for numerical simulation of high–speed flows in the presence of a complex shock–wave structure. The used finite–difference scheme and software implementation are described. Examples of calculations are given.","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"7 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133076433","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 : 1900-01-01DOI: 10.33257/phchgd.23.1.981
A. Panasenko
{"title":"Calculation of Shock Wave Formation in a Shock Tube with a Different Method of Initial Gas Outflow","authors":"A. Panasenko","doi":"10.33257/phchgd.23.1.981","DOIUrl":"https://doi.org/10.33257/phchgd.23.1.981","url":null,"abstract":"","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122403964","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 : 1900-01-01DOI: 10.33257/phchgd.23.5.1008
D. Khazov
{"title":"Research of the Stagnation Pressure Increasing Possibilities in a High-Speed Flow","authors":"D. Khazov","doi":"10.33257/phchgd.23.5.1008","DOIUrl":"https://doi.org/10.33257/phchgd.23.5.1008","url":null,"abstract":"","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122711098","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 : 1900-01-01DOI: 10.33257/phchgd.23.3.1006
S. Surzhikov
{"title":"Computational Study of the Parameters of an Anomalous Glow Discharge on the Surface of a Gas-Flowed Plate","authors":"S. Surzhikov","doi":"10.33257/phchgd.23.3.1006","DOIUrl":"https://doi.org/10.33257/phchgd.23.3.1006","url":null,"abstract":"","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114868189","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 : 1900-01-01DOI: 10.33257/phchgd.23.2.989
K. Altunin
The article is devoted to an actual problem of heat transfer decrease due to deposit formation on heat transfer equipment walls. A new heat transfer similarity number of deposit formation that can describe its thermal and electric nature is presented here. New methods of experimental studies under free air convection with deposit on the heat transfer surface are given and dis-cussed. The deposit was as a dense wet mass of NaCl salt. A new criterion equation for natural convection conditions of air has been obtained and shown in the article. It is possible to state that new methods of heat transfer calculation while appearing deposits based upon the created heat transfer similarity number of deposit formation have been successfully developed.
{"title":"Research of the Effect of Salt Deposits on Heat Transfer during Natural Air Convection","authors":"K. Altunin","doi":"10.33257/phchgd.23.2.989","DOIUrl":"https://doi.org/10.33257/phchgd.23.2.989","url":null,"abstract":"The article is devoted to an actual problem of heat transfer decrease due to deposit formation on heat transfer equipment walls. A new heat transfer similarity number of deposit formation that can describe its thermal and electric nature is presented here. New methods of experimental studies under free air convection with deposit on the heat transfer surface are given and dis-cussed. The deposit was as a dense wet mass of NaCl salt. A new criterion equation for natural convection conditions of air has been obtained and shown in the article. It is possible to state that new methods of heat transfer calculation while appearing deposits based upon the created heat transfer similarity number of deposit formation have been successfully developed.","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125722927","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 : 1900-01-01DOI: 10.33257/phchgd.23.4.1001
R. Deeb
In this work, the influence of the number of tube rows and the Reynolds number on the thermal hydrodynamic characteristics of staggered drop-shaped tube bundles was analyzed. A formula was developed for calculating the hydrodynamic drag coefficient f of a drop-shaped tube bundle, taking into account the number of tube rows R N . Drop-shaped tubes were arranged in a staggered pattern and placed in consecutive rows in the direction of flow (from 1 to 20 rows), each of which consists of 7 tubes in the transverse direction. The Reynolds number Re ranged from 1.78 × 10 3 to 18.72 × 10 3 . The results showed that f decreases with increasing Re. Moreo-ver, an increase in R N leads to an increase in the drag coefficient. f increases by about 18.59 ÷ 21.91 times with an increase in R N from 1 to 20. The maximum error between the numerical results and the formula obtained on their basis was ± 8.18 %.
{"title":"Hydrodynamic Characteristics of Single and Multi-Row Heat Exchangers Employing Staggered Drop-Shaped Tubes","authors":"R. Deeb","doi":"10.33257/phchgd.23.4.1001","DOIUrl":"https://doi.org/10.33257/phchgd.23.4.1001","url":null,"abstract":"In this work, the influence of the number of tube rows and the Reynolds number on the thermal hydrodynamic characteristics of staggered drop-shaped tube bundles was analyzed. A formula was developed for calculating the hydrodynamic drag coefficient f of a drop-shaped tube bundle, taking into account the number of tube rows R N . Drop-shaped tubes were arranged in a staggered pattern and placed in consecutive rows in the direction of flow (from 1 to 20 rows), each of which consists of 7 tubes in the transverse direction. The Reynolds number Re ranged from 1.78 × 10 3 to 18.72 × 10 3 . The results showed that f decreases with increasing Re. Moreo-ver, an increase in R N leads to an increase in the drag coefficient. f increases by about 18.59 ÷ 21.91 times with an increase in R N from 1 to 20. The maximum error between the numerical results and the formula obtained on their basis was ± 8.18 %.","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125837576","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 : 1900-01-01DOI: 10.33257/phchgd.20.4.860
A. Panasenko
The results of preliminary calculations of non-stationary gas flow during the oscillatory movement of the lander at its circular frequency of 2 oscillations per second with the angle of maximum deviation of the symmetry axis from the initial position to one degree in the presence and absence of viscosity effects are presented.
{"title":"Effect of Viscosity on Lander Oscillations","authors":"A. Panasenko","doi":"10.33257/phchgd.20.4.860","DOIUrl":"https://doi.org/10.33257/phchgd.20.4.860","url":null,"abstract":"The results of preliminary calculations of non-stationary gas flow during the oscillatory movement of the lander at its circular frequency of 2 oscillations per second with the angle of maximum deviation of the symmetry axis from the initial position to one degree in the presence and absence of viscosity effects are presented.","PeriodicalId":309290,"journal":{"name":"Physical-Chemical Kinetics in Gas Dynamics","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122225825","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：