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ANALYSIS OF METHODS FOR SIMULATING THE DECAY HEAT IN CORIUM WHEN MODELING A SEVERE ACCIDENTS AT NUCLEAR POWER PLANT 在模拟核电站严重事故时分析模拟冕中衰变热的方法
Eurasian Physical Technical Journal Pub Date : 2024-03-29 DOI: 10.31489/2024no1/57-66
M.K. Skakov
{"title":"ANALYSIS OF METHODS FOR SIMULATING THE DECAY HEAT IN CORIUM WHEN MODELING A SEVERE ACCIDENTS AT NUCLEAR POWER PLANT","authors":"M.K. Skakov","doi":"10.31489/2024no1/57-66","DOIUrl":"https://doi.org/10.31489/2024no1/57-66","url":null,"abstract":"It is known that during development of a severe accident at a nuclear power plant, the melting of core materials and theformation of corium occurs. A feature of corium is the presence of a decay heat, which contributes a lot to the nature of its interaction with the structural materials of the reactor facility. In this regard, quite serious requirements are imposed on methods for simulating decay heat in the corium prototype, which relate to both the uniformity of the volume distribution and its intensity. This paper presents a comparative analysis of existing methods for decay heat simulation in corium, which are used at various experimental facilities investigating the operation of passive protection systems in severe accidents with reactor meltdown at nuclear power plants. By comparing the advantages and disadvantages, a more practical method of decay heat simulation is determined and ways are proposed to further improve the chosen method to fully simulate the thermal field of a real corium.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140366916","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}
引用次数: 0
AUTOMATED CONTROL OFTHE THIN FILMS ELECTRICALCONDUCTIVITY BY THE EDDY CURRENT METHOD 用涡流法自动控制薄膜的导电性能
Eurasian Physical Technical Journal Pub Date : 2024-03-29 DOI: 10.31489/2024no1/74-83
V.N. Malikov
{"title":"AUTOMATED CONTROL OFTHE THIN FILMS ELECTRICALCONDUCTIVITY BY THE EDDY CURRENT METHOD","authors":"V.N. Malikov","doi":"10.31489/2024no1/74-83","DOIUrl":"https://doi.org/10.31489/2024no1/74-83","url":null,"abstract":"The article considers the possibility of using the eddy current method of non-destructive testing for the problems of measuring the electrical conductivity of thin metal films. As the object of measurement, we used copper films of various thicknesses obtained by vacuum vapor deposition. A review of current trends in the use of copper films in modern industry and science is presented, and an analysis is made of current methods of non-destructive testing suitable for studying thin copper films. A brief description of the deposition method and the hardware-software complex for measuring the electrical conductivity of the film is presented. A calibration curve is presented, which makes it possible to restore the values of the electrical conductivity of the film from the value of the signal of the eddy current transducer. GaAs samples were selected to construct a calibration curve. The decision is explained by the proximity of the values of the electrical conductivity of this chemical compound to the calculated indicators of the obtained thin films. The results of testing films with different characteristics are presented and the distribution of the electrical conductivity of the films depending on the batch is shown. A series of practical measurements of thin films demonstrated the existence of a relationship between the mass of the initial substance that was subjected to deposition and the characteristics of the resulting films. According to different values of electrical conductivity within the same batch, it was concluded that there is a difference in the quality of deposition of different films.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140365303","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}
引用次数: 0
ENERGY SPECTRA, EXPECTATION VALUES, AND THERMODYNAMICPROPERTIES OF HCl AND LiH DIATOMIC MOLECULES HCl 和 LiH 双原子分子的能谱、期望值和热力学性质
Eurasian Physical Technical Journal Pub Date : 2024-03-29 DOI: 10.31489/2024no1/124-137
E. Inyang
{"title":"ENERGY SPECTRA, EXPECTATION VALUES, AND THERMODYNAMICPROPERTIES OF HCl AND LiH DIATOMIC MOLECULES","authors":"E. Inyang","doi":"10.31489/2024no1/124-137","DOIUrl":"https://doi.org/10.31489/2024no1/124-137","url":null,"abstract":"The Schrödinger equation is solved by applying the Nikiforov-Uvarov-Functional Analysis method to the Hulthén plus screened Kratzer Potential. The Greene-Aldrich approximation is employed to determine the closed form expressions for the energy equation and the wave function. The Hellmann-Feynman theorem was employed to calculate the energy spectra and expectation values of various quantum states for diatomic moleculesof HCl and LiH. Subsequently, we employed the energy equation that we had previously derived to compute the partition function, which in turn enabled us to determine the thermodynamic properties associated with the diatomic molecules. The partition function for the diatomic molecules of 2Hand LiHwas calculated at different temperatures. The results indicate that the partition function of the two diatomic molecules rose as the temperature increased.The findings we obtained align with the results documented in the literature.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140368548","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}
引用次数: 0
HARDWARE AND SOFTWARE COMPLEX FOR STABILITY CONTROL OF QUARRY SIDES USING OPTICAL FIBER 利用光纤实现采石场边坡稳定性控制的软硬件综合体
Eurasian Physical Technical Journal Pub Date : 2024-03-29 DOI: 10.31489/2024no1/104-113
P.Sh. Madi
{"title":"HARDWARE AND SOFTWARE COMPLEX FOR STABILITY CONTROL OF QUARRY SIDES USING OPTICAL FIBER","authors":"P.Sh. Madi","doi":"10.31489/2024no1/104-113","DOIUrl":"https://doi.org/10.31489/2024no1/104-113","url":null,"abstract":"This article explores solutions to address the issue of implementing a shift monitoring system in quarries, which is the primary cause of collapsing sides and edges. For guaranteed safety and continuous monitoring of the quarry's activities, advanced fiber-optic sensors have been integrated. Their design is based on the use of single-mode optical fibers, which provides the most accurate assessment of displacements in mountainous terrain up to a distance of 30 km. Extensive laboratory studies have been carried out to deeply analyze the deformation and shear processes occurring in this geographical area. The results obtained from these analyses bode well for a significant improvement in quarry performance and a reduction in the likelihood of emergency situations.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140367332","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}
引用次数: 0
STUDY OF CORRELATIONS IN THE RELIEF OF COMPLEX SURFACES USING THE EXAMPLE OF AMORPHOUS HYDROGENATED SILICON 以无定形氢化硅为例，研究复杂表面浮雕中的相关性
Eurasian Physical Technical Journal Pub Date : 2024-03-29 DOI: 10.31489/2024no1/6-13
Litvinov Rybin N.B.
{"title":"STUDY OF CORRELATIONS IN THE RELIEF OF COMPLEX SURFACES USING THE EXAMPLE OF AMORPHOUS HYDROGENATED SILICON","authors":"Litvinov Rybin N.B.","doi":"10.31489/2024no1/6-13","DOIUrl":"https://doi.org/10.31489/2024no1/6-13","url":null,"abstract":"Abstract. The results of a study of correlations in the surface relief of amorphous hydrogenated silicon using the methods of average mutual information andtwo-dimensional detrended fluctuation analysis by identifying its structural components using the scale-space technique are presented. The experimental samples were model and real surfaces of amorphous hydrogenated silicon. The model surface was formed bysuperimposing the surfaces \"Stochastic fractal\", \"Particles\" and \"Gaussian noise\". The values of the scaling index were obtained from the dependences of the fluctuation function on the scale, as well as the values of the average mutual information and themaximum mutual information were calculated. A comparative analysis of the correlation dependencies of the model and the real surfaces of amorphous hydrogenated silicon has shown that the model surface \"Particles\" is closest to the surface structure of theexperimental sample in terms of its characteristics. It was found that particles with dimensions of 65±10 nm are present in the surface structure of the experimental sample.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140367740","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}
引用次数: 0
INVESTIGATION OF THE INFLUENCE OF LIQUID FUEL INJECTION RATE ON THE COMBUSTION PROCESS USING KIVA–II SOFTWARE 利用kiva-ii软件研究液体燃料喷射速率对燃烧过程的影响
Eurasian Physical Technical Journal Pub Date : 2023-09-21 DOI: 10.31489/2023no3/43-51
I.E. Berezovskaya
{"title":"INVESTIGATION OF THE INFLUENCE OF LIQUID FUEL INJECTION RATE ON THE COMBUSTION PROCESS USING KIVA–II SOFTWARE","authors":"I.E. Berezovskaya","doi":"10.31489/2023no3/43-51","DOIUrl":"https://doi.org/10.31489/2023no3/43-51","url":null,"abstract":"In this work, the ignition of liquid fuel was studied at various rates of fuel injection into the combustion chamber. The studied processes are described by the following equations: continuity, momentum, energy, k-ɛ turbulence model and others. The computational experiment was carried out using the KIVA-II software. The numerical method is efficient and takes into account various factors such as multistage chemical chain reactions, transfer of momentum, heat and mass by convection, radiation, turbulence, etc. In order to select the optimal parameters of the organization of these processes influence of the heptane injection rate into the combustion chamber on the process of combustion and self-ignition of heptane was studied. The injection rate of heptane varied from 160 m/s to 400 m/s an interval of 30 m/s. The size and temperature distributions of heptane droplets before evaporation, the concentration fields of carbon dioxide, and the temperature fields in the combustion chamber depending on the rate of fuel injection through the injector into the combustion chamber were obtained. The optimal range of heptane injection speed was determined, which is 250 m/s - 280 m/s, in order to increase the efficiency of the combustion chamber and reduce the negative impact on the environment.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136239846","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}
引用次数: 0
DEVELOPMENT OF A MICROCONTROLLER DEVICE FOR REPRODUCING AUDIO INFORMATION 用于音频信息再现的微控制器装置的研制
Eurasian Physical Technical Journal Pub Date : 2023-09-21 DOI: 10.31489/2023no3/70-79
A.K. Tussupbekova
{"title":"DEVELOPMENT OF A MICROCONTROLLER DEVICE FOR REPRODUCING AUDIO INFORMATION","authors":"A.K. Tussupbekova","doi":"10.31489/2023no3/70-79","DOIUrl":"https://doi.org/10.31489/2023no3/70-79","url":null,"abstract":"The paper presents the results of the design, development and manufacture of a microcontroller device for reproducing sound information in the presence of a person. The description of the concept of a microcontroller device and the architecture of the system are given. The technical specification for the manufacture of the device and its software has been compiled. A prototype of the audio information playback device based on Arduino-UNO was made. In order to reduce the cost of one product, the device was upgraded and the ATtiny13A-SU microcontroller was selected as the microcontroller. An electrical principal scheme, a printed circuit board of the device and software for it have been developed. 17 operating audio information playback devices have been manufactured. A technical solution for further improvement of the microcontroller device is proposed.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136239847","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}
引用次数: 0
THERMOELECTRIC MONITORING OF THERMAL RESISTANCE IN ELECTRONIC SYSTEMS 电子系统热阻的热电监测
Eurasian Physical Technical Journal Pub Date : 2023-09-21 DOI: 10.31489/2023no3/52-61
A.A. Abouellail
{"title":"THERMOELECTRIC MONITORING OF THERMAL RESISTANCE IN ELECTRONIC SYSTEMS","authors":"A.A. Abouellail","doi":"10.31489/2023no3/52-61","DOIUrl":"https://doi.org/10.31489/2023no3/52-61","url":null,"abstract":"The article proposes to apply the method of thermoelectric testing to determine the thermophysical parameters of the thermal interface. A thermal interface is located between metal surfaces, between which, thermoelectromotive force occurs during heating at any stage of the device operation. The obtained graphs of the temperature difference dependence on the heating time, measured by thermocouples, and measured using thermoelectromotive force confirm the accuracy of the thermoelectric method of testing. Graphs visualize the heat transfer process with thermal resistance variation, temperature fluctuations and the resulting thermoelectromotive force. The proposed method makes it possible to monitor thermal resistance with an error of less than 8 %.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136239848","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}
引用次数: 0
REASON OF CORROSION OF ALUMINIUM PRODUCTS IN SEA WATER 铝制品在海水中腐蚀的原因
Eurasian Physical Technical Journal Pub Date : 2023-09-21 DOI: 10.31489/2023no3/20-26
A.T. Berdibekov
{"title":"REASON OF CORROSION OF ALUMINIUM PRODUCTS IN SEA WATER","authors":"A.T. Berdibekov","doi":"10.31489/2023no3/20-26","DOIUrl":"https://doi.org/10.31489/2023no3/20-26","url":null,"abstract":"In this paper, the cause of corrosion of aluminium products in sea water is proposed. Corrosion is caused by incomplete oxidation of aluminum cells on the surface of products. Incomplete oxidation of aluminium cells occurs due to lack of energy in oxygen molecules. It is necessary to significantly increase the energy of oxygen molecules for oxidation the rhombic subsystem of a cubic face-centered aluminum cell. It is shown a significant decrease in the rate of the chemical reaction for the treated aluminium foil interacted with iodine in alcohol solution. The foil was in contact with oxygen heated to 450 °C and subjected to ultraviolet irradiation at the same time. It was pretreated for 12 hours. It is assumed that 12 hours of contact the foil with reactive oxygen species, most of the aluminium cells on the surface of the foil samples have been completely oxidised. This foil doesn’t react chemically with halogens.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136240426","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}
引用次数: 0
STUDY OF PREPREGS LIFETIME BASED ON EPOXY RESIN WITH AROMATIC AMINE HARDENER 芳香胺固化剂环氧树脂预浸料寿命研究
Eurasian Physical Technical Journal Pub Date : 2023-09-21 DOI: 10.31489/2023no3/62-69
B.М. Baiserikov
{"title":"STUDY OF PREPREGS LIFETIME BASED ON EPOXY RESIN WITH AROMATIC AMINE HARDENER","authors":"B.М. Baiserikov","doi":"10.31489/2023no3/62-69","DOIUrl":"https://doi.org/10.31489/2023no3/62-69","url":null,"abstract":"Today, there is a steady trend in the use of carbon fiber-reinforced plastics in the aerospace and defense industries, mainly based on using pre-impregnated semi-finished products - prepregs. Producing carbon fiber parts from prepregs often requires a long manufacturing time, during which the prepreg must maintain its performance properties. Therefore, one of the main characteristics of prepreg is its viability. This work developed a suitable resin composition with optimized properties and a methodology for studying the viability of prepreg samples, based on determining the stickiness and degree of curing of the prepreg depending on storage time. The influence of prepreg storage time on the strength characteristics of cured laminates was studied. Prepreg samples with long-term viability of up to 60 days were obtained. The experimental data obtained are of practical significance in the industrial production of carbon fiber products, as they establish a connection between the performance properties of the prepreg and storage time.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136240428","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}
引用次数: 0
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