S. A. Isaev

Verification of the multiblock computational technology in calculating laminar and turbulent flow around a spherical hole on a channel wall

A methodological numerical investigation of the three-dimensional flow of an incompressible viscous fluid around a deep spherical hole on a channel wall has been carried out within the framework of the multiblock approach on the set of intersecting rectangular and cylindrical grids.

Numerical analysis of the effect of viscosity on the vortex dynamics in laminar separated flow past a dimple on a plane with allowance for its asymmetry

Based on numerical solution of the Navier–Stokes three‐dimensional stationary equations by a factorized finite‐volume method, the influence of physical viscosity on self‐organizing jet‐vortex structures in a dimple on a plane immersed in a laminar flow is analyzed with allowance for the asymmetry of the dimple shape.

Modeling of the influence of viscosity on the tornado heat exchange in turbulent flow around a small hole on the plane

The influence of viscosity on turbulent flow around a small spherical hole on the plane and on vortex heat exchange is analyzed numerically.

Numerical Analysis of the Influence of the Depth of a Spherical Hole on a Plane Wall on Turbulent Heat Exchange

A numerical investigation of the influence of the depth of a spherical hole on a plane wall on vortex heat exchange has been carried out within the framework of the multiblock approach to solution of the steady‐ state Reynolds equations closed with the help of Menters zonal model of shear‐stress transfer and the energy equation.

Numerical and physical modeling of the circulation flow in a vortex cell in the wall of a rectilinear channel

The results of physical and numerical modeling of the three-dimensional vortex flow in a circular cell forming a recess in the wall of a rectangular constant-area channel are presented.

Intensification of Tornado Turbulent Heat Exchange in Asymmetric Holes on a Plane Wall

A numerical investigation of the influence of the shape of an isolated asymmetric hole of moderate depth, located on a plane wall, on the convective heat exchange in the case of turbulent flow of an incompressible viscous fluid around it has been carried out within the framework of the multiblock approach to solution of steady‐state Reynolds equations closed using Menters zonal model of shear‐stress transfer and the energy equation.

NUMERICAL AND PHYSICAL MODELING OF TURBULENT FLOW IN A DIVERGENT CHANNEL WITH A VORTEX CELL

Turbulent flow in a channel with a vortex cell is analyzed numerically and experimentally. The influence of the rotation of a central body in a vortex cell, the viscosity, and the pressure gradient on the local and integral characteristics of the flow is evaluated.

Numerical analysis of the influence of angle of attack on turbulent flow around a thick goettingen airfoil with vortex cells

On the basis of the solution by multi-block computational technologies of Reynolds equations closed with the aid of the equations of the model of Menter’s shear stresses transfer, an analysis of the flow around a thick airfoil of classical geometry with vortex cells is given at an arrangement of suction from the surface of central bodies placed inside them. The suction velocities, angles of attack, and location of vortex cells on the contour are determined, under which the flow around an airfoil of 35,2% thickness is ensured close to a separation-free flow, for high Reynolds numbers (Re = 105). The integral force characteristics of the Goettingen and EKIP profiles are compared for the distributed and concentrated suction in vortex cells.

Numerical analysis of the influence of the angle of attack on a turbulent flow around a thick profile with vortex cells at high Reynolds numbers

A numerical investigation of the influence of the angle of attack on a turbulent flow around a thick profile with vortex cells at high Reynolds numbers has been carried out using the multiblock approach to solution of steady‐state two‐dimensional Reynolds equations closed by means of Menters zonal model of shear‐stress transfer.

Numerical Modeling of Laminar Separation Flow and Heat Exchange in Tube Banks with the Use of Multiblock Computational Techniques

A multiblock approach to the solution of steady‐state Navier–Stokes equations has been approved and an original procedure of mean‐mass temperature correction has been proposed for calculation of separation flow and heat exchange in an in-line bank of round tubes.