An adaptive Lagrangian method for computing 1D reacting and non-reacting flows

Journal Article · Mon Feb 01 04:00:00 EST 1993 · Journal of Computational Physics; (United States)

DOI:https://doi.org/10.1006/jcph.1993.1037· OSTI ID:6620915

Lappas, T; Leonard, A; Dimotakis, P E ^[1]

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1. California Institute of Technology, Pasadena (United States)

A method for computing one-dimensional unsteady compressible flows, with and without chemical reactions is presented. This work has focused on the accurate computation of the discontinuous waves that arise in such flows. The main feature of the method is the use of an adaptive Lagrangian grid. This allows the computation of discontinuous waves and their interactions with the accuracy of front-tracking algorithms. This is done without the use of additional grid points representing shocks, in contrast to conventional front-tracking schemes. The Lagrangian character of the present scheme also allows contact discontinuities to be captured easily. The algorithm avoids interpolation across discontinuities in a natural and efficient way. The method has been used on a variety of reacting and non-reacting flows in order to test its ability to compute accurately and in a robust way complicated wave interactions.

• OSTI ID: 6620915
• Journal Information: Journal of Computational Physics; (United States), Journal Name: Journal of Computational Physics; (United States) Vol. 104:2; ISSN JCTPAH; ISSN 0021-9991
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
ALGORITHMS
CHEMICAL REACTIONS
COMPRESSIBLE FLOW
COMPUTERIZED SIMULATION
FLUID FLOW
FUNCTIONS
LAGRANGIAN FUNCTION
MATHEMATICAL LOGIC
NUMERICAL SOLUTION
ONE-DIMENSIONAL CALCULATIONS
SIMULATION
UNSTEADY FLOW