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Monday, August 3, 2020 | History

3 edition of Rapid numerical simulation of viscous axisymmetric flow fields found in the catalog.

Rapid numerical simulation of viscous axisymmetric flow fields

# Rapid numerical simulation of viscous axisymmetric flow fields

Subjects:
• Axisymmetric flow.,
• Computational fluid dynamics.,
• Finite difference theory.,
• Flow distribution.,
• Navier-Stokes equation.,
• Pressure distribution.,
• Runge-Kutta method.,
• Shock waves.,
• Transonic flow.,
• Turbulence models.,
• Viscous flow.

• Edition Notes

The Physical Object ID Numbers Statement Daniel L. Tweedt and Rodrick V. Chima. Series NASA technical memorandum -- 107103. Contributions Chima, Rodrick V., United States. National Aeronautics and Space Administration. Format Microform Pagination 1 v. Open Library OL15420864M

The flow field around a body moving at supersonic speed can be divided into three parts, namely, shock layer, near wake including base flow, and far wake. The shock layer flow is bounded by the bow shock wave and the front and lat­ eral parts of the body surface. Lei Hou, Ayang Zhou, Xiao He, Wei Li, Yan Fu, Jinli Zhang, CFD Simulation of the Filtration Performance of Fibrous Filter Considering Fiber Electric Potential Field, Transactions of Tianjin University, /s, ().

Abstract- Harper’s sphere theorem for the axisymmetric slow viscous flow exterior to a shear stress-free sphere is established in an alternative way and then given an extension of the theorem for the flow interior to the same sphere. Keywords: harper's theorem, viscous flow, shear stress, circle theorem.   Physical Problem. We consider the problem of flow in an axisymmetric, flexible tube (see Fig. Fig.1). 1).The dashed upper boundary of the figure is the centerline, or axis of symmetry, of the tube where r = 0. There is flow into the tube at the left boundary where the classic Poiseuille velocity profile for viscous flow in pipes is prescribed.

Axisymmetric Flow A flow pattern is said to be axisymmetric when it is identical in every plane that passes through a certain straight-line. The straight-line in question is referred to as the symmetry axis. Let us set up a Cartesian coordinate system in which the symmetry axis corresponds to the -axis. The book can be conveniently ordered there as well. Example Results of the 2-D Flow Solvers 1. Subsonic flow past RG 15A/ airfoil. The nearly incompressible flow (Mach=, α=2°) was simulated on a structured grid (C-type) with x48 cells using the .

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### Rapid numerical simulation of viscous axisymmetric flow fields Download PDF EPUB FB2

Rapid Numerical Simulation of Viscous Axisymmetric Flow Fields Daniel L. Tweedtt and Rodrick V. Chima\$ NASA Lewis Research Center Cleveland, Ohio Abstract A two-dimensional Navier-Stokes code has been developed for rapid numerical simulation of axisymmebic flow fields, including flow fields with an azimuthal veloc- ity component.

Get this from a library. Rapid numerical simulation of viscous axisymmetric flow fields. [Daniel L Tweedt; Rodrick V Chima; United States. National Aeronautics and Space Administration.]. Rapid Numerical Simulation of Viscous Axisymmetric Flow Fields. By Daniel L.

Tweedt and Rodrick V. Chima. Abstract. A two-dimensional Navier-Stokes code has been developed for rapid numerical simulation of axisymmetric flow fields, including flow fields with an azimuthal velocity component.

The azimuthal-invariant Navier-Stokes equations in a. Numerical and Experimental Investigation of Beveled Trailing EDGE Flow Fields 1 June | Journal of Hydrodynamics, Vol.

20, No. 3 Detached-Eddy Simulation of High-Reynolds-Number Beveled-Trailing-Edge Boundary Layers and Wakes. Numerical Simulation of Three-Dimensional Viscous Flow arounct a Submersible Body C-I Yang David Taylor Research Center Bethesda, USA P-M. Hartwich and P. Sundaram NASA Langley Research Center Hampton, USA Abst ract A second-order accurate, implicit, high resolution up- wind scheme has been used to solve the three-di~nensional incompressible.

In this paper we describe a numerical method to simulate particular axisymmetric viscous sintering problems. In these problems the material transport. Numerical Simulation ofAxisymmetric Viscous Sintering G.A.L. van de Vorst DepartmentofMathematics andComputing Science Eindhoven University ofTechnology P.O.

Box, MB Eindhoven, The Netherlands (e-mail:wsangv@) Abstract In this paper we describe a numerical method to simulate particular axisymmetric vis­ cous sintering problems.

A Numerical Simulation Algorithm of the Inviscid Dynamics of Axisymmetric Swirling Flows in a Pipe frequency numerical noise inside the breakdown zone that is related to the expected singularity that must appear in any flow simulation based on the Euler equations. The Bifurcation Structure of Viscous Steady Axisymmetric Vortex Breakdown.

Validation of a Three Dimensional Viscous Analysis of Axisymmetric Supersonic Inlet Flow Fields. Three-dimensional nonequilibrium viscous shock-layer flow over the Space Shuttle Orbiter.

Numerical simulation of three-dimensional supersonic inlet flow fields. Numerical tests on the Taylor-Couette flow with finite aspect ratio of and the lid-driven cylindrical cavity flow were carried out showing good agreement with numerical and experimental results found in the literature, evidencing the ability of the implemented method to solve axisymmetric.

A numerical simulation of two-phase incompressible flow is conducted in an axisymmetric geometry of the orifice for Reynolds numbers between and The orifice has a rounded upstream corner.

Numerical simulation and mathematical modeling are presented to propose the innovative concept of activation energy and binary chemical reaction aspects on unsteady axisymmetric flow of Cross nanofluid past a radially stretching surface.

Non-linear thermal radiation is. The objective of the present paper is the presentation of the numerical simulation of the turbulent transonic flow over an axisymmetric bump.

Using an implicit factored central scheme and an algebraic turbulence model, several numerical parameters of the solution are extensively examined. The influence of the boundary conditions and of the manipulation of the axisymmetric terms but mainly of.

Axisymmetric viscous interfacial oscillations – theory and simulations - Volume - Palas Kumar Farsoiya, Y. Mayya, Ratul Dasgupta Flow topologies in bubble-induced turbulence: a direct numerical simulation analysis. Journal of Fluid Mechanics, Vol. Issue., p. CrossRef.

The flow-field of a fuel/air mixing system with an axisymmetric lobed mixer was numerically investigated. Large-scale streamwise vortices are formed immediately downstream of the mixer trailing.

The present paper is devoted to the numerical simulation of steady-state co-flow of two immiscible viscoelastic fluids in complex geometries. Single- viscoelastic fluid flow computation has been the subject of much research work over the last ten years (see the reviews by Keunings [7] and Crochet [S]).

Stéphane Popinet, Stéphane Zaleski. Simulation of axisymmetric free surface viscous flow around a non-spherical bubble in the sonoluminescence regime. Third International Conference on Multiphase Flow, JunLyon, France. ￿hal￿. A new numerical method has been developed to investigate three-dimensional, unsteady pipe flows using a new velocity-vector expansion method.

Each vector function in the expansion set is divergence-free and satisfies the boundary conditions for viscous flow. On the numerical side, various investigations on electrohydrodynamics have been conducted for axisymmetric conﬁgurations. Miksis () developed a boundary integral method to calculate the static shape of a single dielectric drop suspended in an unbounded medium and subjected to a steady electric ﬁeld.

Assuming creeping. axisymmetric flow model for a fully three-dimensional flow as shown in Figs. 1 and 2. A first answer to this fundamental question is given in [6], where the numerical results for axisymmetric swirling flow computed in the draft tube cone of a Francis turbine are validated against Laser Doppler Velocimetry measurements for axial and.

In axisymmetric flow it's based on a 2d computational domain (assuming you selected the 2D axisymmetric solver) where the axis of rotation is coincident with the x-axis.

Then, fluent solves the flow in cylindrical coordinates (r=y, theta=all angles, z=x). Instead, you can use the 3D solver, and set periodic boundary conditions on a wedge.The monograph summarizes the results of research of many years in the field of numerical simulation based on the continuum dynamics equations for transonic and supersonic flows of viscous perfect gas in the context of the problems of external aerodynamics, which have been obtained by the authors and their colleagues and published in different domestic journals.

The secondary breakup of liquid drops, accelerated by a constant body force, is examined for small density differences between the drops and the surrounding fluid. Two cases are examined in detail: a density ratio close to unity (ρ d /ρ o =, where the Boussinesq approximation is valid) and a density ratio of ten.

A finite difference/front tracking numerical technique is used to solve the.