Accession Number : ADA185793

Title :   Computational Methods for complex Flowfields.

Descriptive Note : Final technical rept. 1 Jun 82-31 May 87,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE COMPUTATIONAL FLUID DYNAMICS LAB

Personal Author(s) : Murman, Earll M. ; Baron, Judson R.

Report Date : 31 JUL 1987

Pagination or Media Count : 168

Abstract : The development of solution algorithms for complex flowfields have been the objective of this research. Embedded subdomains were used to resolve relevant physical processes in a global flow around aerodynamic bodies. Both non-adaptive and adaptive approaches were studied and developed. Results for solving the two dimensional Euler equations using non-adaptive and adaptive finite volume and finite element work are summarized. A new approach is reported for combining expert system approaches with adaptive procedural algorithms into a totally integrated methodology. Algorithms for adaptive explicit and non-adaptive semi-implicit Navier-Stokes calculations are reported. Recent results on formulation of outflow boundary conditions for the Navier-Stokes equations are also presented. Keywords: Euler equations; Navier Stokes equations; Finite element methods; Embedded grids; Adaptive grids; Computational fluid dynamics.

Descriptors :   *FINITE ELEMENT ANALYSIS, *FLOW FIELDS, ADAPTIVE SYSTEMS, AERODYNAMICS, ALGORITHMS, BOUNDARIES, COMPUTATIONS, DIFFERENTIAL EQUATIONS, EMBEDDING, FLOW, FLUID DYNAMICS, GLOBAL, GRIDS, INTEGRATED SYSTEMS, METHODOLOGY, NAVIER STOKES EQUATIONS, NUMERICAL METHODS AND PROCEDURES, SOLUTIONS(GENERAL), TWO DIMENSIONAL, VOLUME, FORMULAS(MATHEMATICS).

Subject Categories : Numerical Mathematics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE