Grigorii Popov
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View article: Gas dynamic optimization of the work process of a single-stage cooled axial turbine with an inside baffle
Gas dynamic optimization of the work process of a single-stage cooled axial turbine with an inside baffle Open
The article presents the results of optimization of the work process of a single-stage axial turbine in order to increase its efficiency. During optimization, it was necessary to preserve the construction of the original turbine as much as…
View article: Linked multidisciplinary optimisation of a twin-shaft turbine of a promising turboshaft engine
Linked multidisciplinary optimisation of a twin-shaft turbine of a promising turboshaft engine Open
The paper presents the results of the linked multidisciplinary optimisation of a single-stage turbine of a compressor and a single-stage free turbine of a promising turboshaft engine. In the process of optimisation, gas dynamic, strength, …
View article: Deposition of carbon nanolayers by PECVD on ceramic substrates
Deposition of carbon nanolayers by PECVD on ceramic substrates Open
Graphene layers and nanostructures were deposited on silicon dioxide (SiO 2 /Si) and silicon carbide (SiC) substrates at low gas pressure (1 – 5 torr) by microwave discharge PECVD (Plasma Enhanced Chemical Vapor Deposition). The advantage …
View article: Features of design calculation of compressor spool flow path of a twin-shaft gas turbine engine core on the basis of 1D and 2D models of their working process
Features of design calculation of compressor spool flow path of a twin-shaft gas turbine engine core on the basis of 1D and 2D models of their working process Open
The features of the stages of parameter design calculation for the formation of the initial design of the flow path of the compressor spool of a twin-shaft engine core of a gas turbine engine are presented and substantiated. The article co…
View article: Assessing the energy efficiency of irrigation pump systems
Assessing the energy efficiency of irrigation pump systems Open
The operating modes of pump units play a crucial role in determining the energy consumption of irrigation systems. Thus, the necessity of performing qualitative and quantitative assessments of the energy efficiency of such systems is of si…
View article: Results of conjugate modeling and analysis of the thermal state of a high-pressure turbine blade
Results of conjugate modeling and analysis of the thermal state of a high-pressure turbine blade Open
Numerical modeling for the purpose of receiving the temperature field of cooled rotor blades and its improvement is an integral process of modern design of gas turbine engines since the issue of cooling at gas temperature at the combustion…
View article: Gasdynamic and strength improvement of the axial flow turbine of a helicopter gas turbine engine
Gasdynamic and strength improvement of the axial flow turbine of a helicopter gas turbine engine Open
The article presents the results of the development of proposals to increase the safety margin of the blades and the efficiency of a single-stage axial flow turbine compressor of a small-sized turbo-shaft engine being modernized with the u…
View article: A method for checking the possibility of joint work of the auxiliary power unit and the starter
A method for checking the possibility of joint work of the auxiliary power unit and the starter Open
This paper describes the algorithm developed by the authors for matching the workflow of the auxiliary power unit to the air turbine used when starting the engine. This technique is applied to determine the possibility of starting a gas tu…
View article: Improving the performance of a two-stage centrifugal pump by optimizing its flowpath
Improving the performance of a two-stage centrifugal pump by optimizing its flowpath Open
The paper describes a technique for improving the characteristics of a two-stage screw centrifugal pump by optimizing its flow path. The technique combines the joint use of mathematical optimization software IOSO, the meshing complex NUMEC…
View article: Method of coordinating joint operation of air starter and auxiliary power unit and determining the gas turbine engine starting time
Method of coordinating joint operation of air starter and auxiliary power unit and determining the gas turbine engine starting time Open
The article describes the method developed by the authors to coordinate the working process of the auxiliary power plant (APP) and the starter air turbine (SAT) used for starting a gas turbine engine (GTD). This method is used to test the …
View article: Improving the start-up parameters of a gas turbine engine by adaptation the air turbine starter
Improving the start-up parameters of a gas turbine engine by adaptation the air turbine starter Open
The paper describes the process of optimizing the blades of a starter air turbine for a gas turbine engine launch system. This task was initiated by the necessity to use an existing turbine when starting a new engine. During the study, it …
View article: Axial compressor optimization method
Axial compressor optimization method Open
In the presented work, an algorithm was developed for finding the optimal configuration of the blades of multi-stage axial compressors using 3D CFD modeling as the main tool and using commercial optimization programs. When developing the a…
View article: NLH calculation of the influence the inlet nonuniformity on the fan parameters
NLH calculation of the influence the inlet nonuniformity on the fan parameters Open
The paper presents the results of numerical simulation of the effect of flow nonuniformities at the engine inlet on the working process of the engine fan. Flow nonuniformities is created by pushing the interceptor into the flow part of inl…
View article: Multi-level model of the centrifugal compressor workflow for its effective optimization
Multi-level model of the centrifugal compressor workflow for its effective optimization Open
The paper presents the main ideas of the virtual test bench concept for rapid obtaining of the reliable characteristics of compressors based on a multi-level mathematical model with a two-step identification using data obtained from mathem…
View article: Creating a multi-level model of a centrifugal compressor for a digital analogue of the gas turbine engine
Creating a multi-level model of a centrifugal compressor for a digital analogue of the gas turbine engine Open
The paper presents the main ideas of the virtual test bench concept for rapid obtaining of the reliable characteristics of compressors based on a multi-level mathematical model with a two-step identification using data obtained from mathem…
View article: Optimization of a three spool axial compressor to increase the efficiency of a gas turbine engine
Optimization of a three spool axial compressor to increase the efficiency of a gas turbine engine Open
The paper provides a description of the algorithm, an example of a specific task, and the results of the optimization of a 15-stage three-spool compressor for a ground-based GTU by the efficiency criteria of the engine. It can be performed…
View article: Experimental Compressor Multidisciplinary Optimization Using Different Parameterization Schemes
Experimental Compressor Multidisciplinary Optimization Using Different Parameterization Schemes Open
The present-day compressors development is a labor-intensive problem, because compressor structure should meet different requirements to the design characteristics. It’s reasonable to find optimal combination of compressor design parameter…