Results 21 to 30 of about 1,502 (184)

Cruising speed of a cylindrical wing performing small translational-rotational oscillations

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2022
This work considers the propulsive motion of a flapping wing of a circular cross section. The problem of harmonic translational-rotational oscillations of the wing with an arbitrary phase shift in a viscous incompressible fluid, the motion of which is ...
A.N. Nuriev
doaj   +1 more source

Calculation of Pressure Pulsations in the Flow Part of the First Stage of an Axial Turbine in the Rotor-Stator Interaction Zone [PDF]

open access: yesE3S Web of Conferences, 2021
A serious problem in the development of reusable liquid-propellant rocket engines (LRE) is the provision of a high resource and reliability of gas turbines of turbopump, which supply fuel to the combustion chamber.
Timushev S. F., Kondratov A. V.
doaj   +1 more source

The Human Comfort Level in an Energy-Saving Simulation Model of Office Building [PDF]

open access: yesE3S Web of Conferences, 2020
Currently high attention is drawn to the studies of the influence of pulsating flow to the heat transfer. Such unsteady flows can be created artificially or may appear during the operation of the thermal energy equipment.
Dzelzitis Egils, Sidenko Sandra
doaj   +1 more source

Bifurcation Analysis Software and Chaotic Dynamics for Some Problems in Fluid Dynamics Laminar–Turbulent Transition

open access: yesMathematics, 2023
The analysis of bifurcations and chaotic dynamics for nonlinear systems of a large size is a difficult problem. Analytical and numerical approaches must be used to deal with this problem.
Nikolay M. Evstigneev   +1 more
doaj   +1 more source

On the Nusselt Solution of a Nonisothermal Two-Fluid Inclined Film Flow

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2009
Nonisothermal viscous two-fluid flows occur in numerous kinds of coating devices. The corresponding mathematical models often represent two-dimensional free boundary value problems for the Navier-Stokes equations or their modifications.
Jürgen Socolowsky
doaj   +1 more source

Flow development region in the boundary layer: two-component molecular viscosity and partial slip

open access: yesАвіаційно-космічна техніка та технологія, 2023
The subject of this study is the flow development region of laminar incompressible fluid flow in the boundary layer. This flow is an example where a direct application of the Navier-Stokes equations of gradient-free laminar incompressible fluid flow, in ...
Pavlo Lukianov, Lin Song
doaj   +1 more source

Stabilized Multiscale Nonconforming Finite Element Method for the Stationary Navier-Stokes Equations

open access: yesAbstract and Applied Analysis, 2012
We consider a stabilized multiscale nonconforming finite element method for the two-dimensional stationary incompressible Navier-Stokes problem. This method is based on the enrichment of the standard polynomial space for the velocity component with ...
Tong Zhang, Shunwei Xu, Jien Deng
doaj   +1 more source

The Adaptive Composite Block-Structured Grid Calculation of the Gas-Dynamic Characteristics of an Aircraft Moving in a Gas Environment

open access: yesMathematics, 2022
This paper considers the problem associated with the numerical simulation of the interaction between the cocurrent stream occurring near a monoblock moving in the gas medium and solid fuel combustion products flowing from a solid fuel rocket engine (SFRE)
Victor V. Kuzenov   +2 more
doaj   +1 more source

On shape optimization of conduits with incompressible flow [PDF]

open access: yesApplied and Computational Mechanics, 2007
In this paper we present an optimal flow problem in the context of internal laminar incompressible flows of Newtonian liquid. The flow optimization problem is introduced in variational form of the stationary Navier-Stokes equations.
Cimrman R., Rohan E.
doaj  

FEATURES OF MODELING THE FLOW AROUND THE HELICOPTER MAIN ROTOR TAKING INTO ACCOUNT ARBITRARY BLADES MOTION

open access: yesНаучный вестник МГТУ ГА, 2019
The article considers the problem of the flow around the helicopter main rotor taking into account blades flapping in the plane of rotation and in the plane of thrust as well as the elastic blades deformation.
V. A. Vershkov   +2 more
doaj   +1 more source

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