Vortex-Transport Element Simulation of a Confined Mixing Layer
Abstract
An improved vortex-transport element numerical scheme has been employed to simulate the spatial evolution of a two-dimensional planar, constant density mixing layer formed behind a splitter plate configuration. This scheme uses vortex elements to discretize the region of high vorticity, and transport elements to discretize the region of high scalar gradients. This improved vortex method offers a method of accurately resolving the areas of high strain by redistributing the neighboring elements within those regions. The resulting scheme has been used to simulate the convective transport of a conserved scalar variable in the shear layer, and the results show favorable agreement with experimental data for the mean and the rms values of the scalar quantity. The effects of harmonic forcing are shown to accelerate the mechanism of the rollup and pairing within the domain, which results in an increase in the convolution of the surfaces. This would be of crucial interest to the problem of active combustion control in a reacting mixing layer simulation. Keywords: Turbulent reacting flow; Vortex method; Turbulent mixing; Chemical reaction; Numerical simulation; Scalar transport; Combusting shear layers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1988
- Accession Number
- ADA203791
Entities
People
- Peyman Givi