3 edition of Development of iterative techniques for the solution of unsteady compressible viscous flows found in the catalog.
Development of iterative techniques for the solution of unsteady compressible viscous flows
|Statement||prepared by Lakshmi N. Sankar, Duane Hixon.|
|Series||NASA contractor report -- NASA CR-188734.|
|Contributions||Hixon, Duane., Langley Research Center.|
|The Physical Object|
A Cartesian grid method has been developed for simulating two-dimensional unsteady, viscous, incompressible flows with complex immersed boundaries. A finitevolume method based on a second-order accurate central-difference scheme is used in conjunction with a two-step fractional-step procedure. A Formulation for True Unsteady Flows Using Iterative Convergence Techniques and the Finite A Formulation for True Unsteady Flows Using Iterative Convergence Techniques and the Finite Element Method Supervisor: Dr. T. Jayachandran accurate, explicit scheme for simulating a wide range of transient, steady and viscous compressible.
Simulation of time-dependent compressible viscous flows using central and upwind-biased finite difference techniques Hall, Edward Joseph, Ph.D. Iowa Cited by: 1. An Iterative Pressure-Correction Method for the Unsteady Incompressible Navier-Stokes Equation by Jean Philippe Aoussou Submitted to the School of Engineering structured finite volumes scheme and is designed for hydrostatic flows. To overcome this obstacle, taking advantage of recent advances in Finite Element techniques, an.
problems, higher speed flows, turbulent flows, and source term dominated flows (like combustion). • Late 70’s, early 80’s saw development of body-fitted grids. By early 90’s, unstructured grid methods had appeared. • Advantages: basic FV control volume balance does not limit cell shape;File Size: KB. The ﬁrst book devoted to CFD was written by Patrick Roache during a year-long visit to the Mechanical Engineering Department of the University of Kentucky during –71, and was published the following year . Computing power at that time was still grossly inadequate for what we today would considerFile Size: 1MB.
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DEVELOPMENT OF ITERATIVE TECHNIQUES FOR THE SOLUTION OF UNSTEADY COMPRESSIBLE VISCOUS FLOWS Grant NAG-l Supplement 2 Final Report Submitted to / _,'__,_ /__J NASA Langley Research Center Hampton, VA Attn: Dr.
Woodrow Whitlow Chief, Unsteady Aerodynamics Branch Prepared by Lakshmi N. Sankar and Duane Hixon School of. A research effort was initiated at Georgia Tech in February on the development of efficient techniques for the computation of 2-D and 3-D unsteady compressible flow by: 1. In this work, the GMRES scheme has been considered as a candidate for acceleration of a Newton iteration time marching scheme for unsteady 2-D and 3-D compressible viscous flow calculation; from preliminary calculations, this will provide up to a 65 percent reduction in the computer time requirements over the existing class of explicit and implicit time marching by: 1.
DEVELOPMENT OF ITERATIVE TECHNIQUES FOR THE SOLUTION OF UNSTEADY COMPRESSIBLE VISCOUS FLOWS Grant. NAG Progress Report for the Period Aug - Febru Submitted to NASA Langley Research Center Hampton, VA Attn: Dr.
Woodrow Whitlow Prepared by Lakshmi N. Sankar Professor, School of Aerospace Engineering. In this work, the GMRES scheme has been considered as a candidate for acceleration of a Newton iteration time marching scheme for unsteady 2-D and 3-D compressible viscous flow calculation.
A research effort was initiated at Georgia Tech in February on the development of efficient techniques for the computation of 2-D and 3-D unsteady compressible flow problems.
Development of iterative techniques for the solution of unsteady compressible viscous flows. By Duane Hixon and L. Sankar. Abstract. During the past two decades, there has been significant progress in the field of numerical simulation of unsteady compressible viscous flows.
At present, a variety of solution techniques exist such as the Author: Duane Hixon and L. Sankar. The development of efficient iterative solution methods for the numerical solution of two- and three-dimensional compressible Navier-Stokes equations is discussed.
Iterative time marching methods have several advantages over classical multi-step explicit time marching schemes, and non-iterative implicit time marching schemes.
Get this from a library. Development of iterative techniques for the solution of unsteady compressible viscous flows: progress report for the period Febru - Aug [Lakshmi N Sankar; Duane Hixon; Langley Research Center.].
COMPUTATION OF UNSTEADY INCOMPRESSIBLE FLOWS WITH THE STABILIZED FINITE ELEMENT METHODS: SPACE-TIME FORMULATIONS, ITERATIVE STRATEGIES AND MASSIVELY PARALLEL IMPLEMENTATIONSt T. Tezduyar, M. Behr, S. Mittal, and A. Johnson Department of Aerospace Engineering and Mechanics Army High-Performance Computing Research Center and.
Steady compressible viscous flows with a dominant flow direction and only small regions of separation can be handled with the techniques described in Chap. 16, particularly external flows around bodies in a supersonic by: 2.
SIAM Journal on Scientific ComputingAA Abstract | PDF ( KB) () Second derivative time integration methods for discontinuous Galerkin solutions of unsteady compressible by: Finally, the existing methods for the computation of steady states, while certainly not at the end of their development, have matured, making the consideration of unsteady flows interesting for a larger group of scientists.
In this article, we will focus on the computation of laminar viscous flows, as modelled by the Navier-Stokes by: 2. Iterative solution of transonic flows over airfoils and wings, including flows at mach 1.
Antony Jameson. Search for more papers by this author. Antony Jameson. Computation of subcritical compressible flows, Computers & Fluids, 9, 1, (33), (). Crossref. Carl Cited by: A review of a procedure for the simulation of time-dependent, inviscid and turbulent viscous, compressible flows involving geometries that change in time is presented.
The adopted discretization technique employs unstructured meshes and both explicit and implicit time-stepping by: This study deals with the numerical solution of a 2D unsteady flow of a compressible viscous fluid in a channel for low inlet airflow velocity. The unsteadiness of the flow is caused by a prescribed periodic motion of a part of the channel wall with large amplitudes, nearly closing the channel during oscillations.
The flow is described by the system of Navier-Stokes equations for laminar by: 2. A pressure based, iterative finite volume method is developed for calculation of compressible, viscous, heat conductive gas flows at all speeds.
The method does not need the use of under-relaxation coefficient in order to ensure a convergence of the iterative by: () Matrix-free modified extended BDF applied to the discontinuous Galerkin solution of unsteady compressible viscous flows. International Journal for Numerical Methods in Fluids () Numerical solution and convergence analysis of steam injection in heavy oil by: The Origins and Further Development of the The paper concludes with a brief review of applications to unsteady and viscous ﬂows.
Introduction This paper is in response to an invitation to give a presentation on the origins and subsequent development of the Jameson-Schmidt-Turkel (JST) scheme in a session on history at the Aviation File Size: 2MB. Fully-coupled pressure-based algorithm for compressible flows: Linearisation and iterative solution strategies.
Computers & Fluids, Vol. Numerical Solutions of Compressible Viscous Flows Using Multidomain Techniques. Finite element methods for solving the Navier-Stokes equations for compressible unsteady by:. This paper aims to develop an algorithm with adaptive inner iteration processes for steady and unsteady incompressible flows.
Design/methodology/approach In this work, with the use of two different criteria in two inner iterative processes, a mechanism is proposed to control inner iteration processes to make the number of inner iterations vary Author: Jin-Ping Wang, Jian-Fei Zhang, Zhi-Guo Qu, Wen-Quan Tao.The explicit scheme for compressible flows has been extensively used for different unsteady problems.
Results from the large-eddy simulation (LES) of a spatially developing round jet are shown in Fig. this case a fully developed pipe flow was simulated in parallel to the jet in order to provide a meaningful instantaneous solution at each time level at the inflow boundary of the by: 5.The full text of this article hosted at is unavailable due to technical difficulties.