Scientific results:
- We have conducted a numerical modeling of a single-phase flow around a cylinder with the use of the LES method with boundary conditions of slippage for the modeling of the properties of hydrophobicity of a solid surface. Data on the conditions of partial slippage had been taken from an experiments performed using the PIV method with high spatial resolution.
- The Laboratory has systematized the features of flow around a cylinder with a surface of a varied degree of hydrophobicity for pre-cavitation and cavitation modes in the field of pre-critical and critical Reynolds numbers for the purpose of analyzing the effect of wettability and parameters of bypassing current on flow near a cylinder, processes of the formation, development and disintegration of the cavitation zone, as well as the possibility of controlling these processes. We also researched flow around a cylinder with a slot.
- We have numerically modeled the structure and dynamics of a single-phase multi-component flow in an axisymmetric mixing chamber and in the volume of a flooded ultrasonic jet with the use of a number of RANS and URANS models of turbulence.
- The Laboratory has researched and generalized the effect of the geometry of a microchannel on projectile fragmentation, the main parameters that determine the separation of micron-size drops form the rear meniscus of a projectile, the main working parameters for producing emulsions with specified disperse compositions.
- We have experimentally researched the dynamics and destruction of single micron-size water droplets in a flow behind the front of a shock wave at moderate Weber numbers. A comparison was made with varying types of fluids.
- The Laboratory has numerically studied the aerodynamic structure of a turbulent gas-droplet flow during dispersion of liquid hydrocarbons by a high-speed jet in a burner device. We have experimentally researched the processes of combustion of liquid hydrocarbons when overheated water vapor is supplied. We researched the effect of the disperse composition of a two-phase reacting flow during combustion of diesel fuel sprayed by a jet of overheated water vapor along the tract of a laboratory burner on the aerothermochmical structure and production of toxic combustion products.
- Our researchers have conducted experiments to study heat exchange on smooth reference pipes and on the first lot of tubes with the «alpha-corund» coating with various degrees of irrigation of the bundle at the input. We obtained results of our experimental research in which we studied heat exchange and the degree of its intensification on a lot of modified pipes with the «alpha-corund» coating.
- We have experimentally research and systematized the evolution of the thickness of a layer of liquid in a flow in a horizontal pipe down along the stream. For the first time in the world practice, we have obtained data on the three-dimensional spatio-temporal evolution of a film of liquid when the flow mode changes.
- For the first time we have obtained results of an analysis of the turbulent structure of bubble shear flows for various modes from the volume gas content and the composition of the gaseous phase using modern methods of reducing the dimensionality of stochastic dynamic systems. We demonstrated the strong effect of PAHs on the dynamics of bubbles.
- Using state-of-the-art optical measurement methods, we have analyzed the effect of PAHs on the properties of spraying torches of various types of liquids for centrifugal and ejection axisymmetric nozzles with structured coatings. We studied the features of combustion of hydrocarbon fuel (acetone, alcohol, kerosene etc.) dispersed by nozzles with coatings.
- We compared the efficiency of various methods of computing from verified mathematical models of dispersion and evaporation of fuel. Using verified mathematical computation models, we have demonstrated the effect of structured surfaces on spraying and combustion of liquid fuel.
Implemented results of research:
The Laboratory has developed and tested an approach to the experimental diagnostics of kerosene spraying in aircraft nozzles on the basis of high-speed shadow photography, this technology has been tested on aircraft nozzles produced by «UEC–Aviadvigatel» JSC as part of the PD–35 program.
Organizational and infrastructural transformations:
The block of the project aimed at researching heat exchange in irrigated bundles of horizontal pipes possesses an experimental bench to study heat exchange during evaporation and boiling of falling films of liquid (R21 freon) on a vertical single-row bundle of horizontal pipes.
Education and career development:
Over the whole course of the functioning of the Laboratory, undergraduate and postgraduate students have been working as part of the its team, performing their research. Young employees of the Laboratory regularly participate in scientific schools, including delivering presentations. During the existence of the Laboratory, its employees have defended one Doctor of Sciences and two Candidate of Sciences dissertations have been prepared and defended. Internships have been organized at the University of Duisburg–Essen (Germany) and Imperial College London (United Kingdom).
Collaborations:
The laboratory permanently collaborate with the leading scientist’s laboratory at Imperial College London (United Kingdom).
We have established collaborations with the University of Duisburg–Essen (Germany), the Technical University of Berlin (Germany), Tomsk Polytechnic University (Russia) – internships, conducting collaborative experiments and academic seminars.
Scientific research is conducted in active cooperation with other leading research laboratories (Germany, Sweden,United Kingdom, China PR).
