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Design of optimal flow concentrator for vertical-axis wind turbines using computational fluid dynamics, artificial neural networks and genetic algorithm
(Sage Publications Ltd, London, 2021)
Wind energy extraction is one of the fastest developing engineering branches today. Number of installed wind turbines is constantly increasing. Appropriate solutions for urban environments are quiet, structurally simple ...
Non-isothermal rarefied gas flow in microtube with constant wall temperature
(Sage Publications Ltd, London, 2021)
In this paper, pressure-driven gas flow through a microtube with constant wall temperature is considered. The ratio of the molecular mean free path and the diameter of the microtube cannot be negligible. Therefore, the gas ...
Special Collection on advanced practices in aerospace and energy engineering
(Advances in Mechanical Engineering, 2022)
Influence of transport coefficients' dependence on temperature for gas flow in microbearing
(Sage Publications Ltd, London, 2022)
The paper presents an analytical solution for the non-isothermal compressible gas flow in a slide microbearing with different temperatures of walls. The gas flow is defined by the Navier-Stokes-Fourier system of the continuum ...
Euler-Euler numerical simulations of upward turbulent bubbly flows in vertical pipes with low-Reynolds-number model
(Sage Publications Ltd, London, 2022)
In this work, numerical simulations of upward turbulent bubbly flows in vertical pipes are conducted in the Euler-Euler framework with a low-Reynolds-number (LRN) model for liquid. It is found that the existing correlation ...
Optical stereometric analysis of an experimental partially-edentulous mandible
(Sage Publications Ltd, London, 2022)
Stereooptics method have been successfully used in biomechanical studies of dental models. The aim of this study was to investigate, on the basis of functional deformities, the distribution of occlusal loads on the casts ...
Current state and future trends in boundary layer control on lifting surfaces
(Sage Publications Ltd, London, 2022)
Successful flow control may bring numerous benefits, such as flow stabilization, flow reattachment, separation delay, drag reduction, lift increase, aerodynamic performance improvement, energy efficiency increase, shock ...
Research of expendable turbojet tubular combustion chamber
(Sage Publications Ltd, London, 2022)
This paper presents research related to the tubular combustion chamber of an expendable turbojet. Although annular combustors are dominant at present, tubular combustors are still attractive because they are simpler to ...
Control of a DC motor using feedback linearization and gray wolf optimization algorithm
(Sage Publications Ltd, London, 2022)
The aim of this study is to investigate nonlinear DC motor behavior and to control velocity as output variable. The linear model is designed, but as it is experimentally verified that it does not describe the system well ...
Analysis and design of the gas generator multifunctional bulkhead considering the thermal and structural loads
(Sage Publications Ltd, London, 2022)
The operation of gas generators brings relatively high thermo-mechanical loads on the gas generator structure. The objective of this article is to determine the operating conditions, in terms of mechanical loads at extremely ...