A first order projection-based time-splitting scheme for computing chemically reacting flows

A first order projection-based time-splitting scheme for computing chemically reacting flows

The simulation of chemically reacting ows in speci c situations is a basic instrument in natural sciences in order to understand complex phenomena (e.g., salt concentrations in oceans) as well as in engineering sciences (e.g., the optimization of the Czochralski growth in semiconductor industries, see e.g. [7, 15]). The objective of the paper is two-fold: First, we will present a rst-order time...

A Second Order Projection-based Time-splitting Scheme for Computing Chemically Reacting Flows

The computation of velocity eld, pressure, temperature distribution and mass fraction functions that are coupled in a nonlinear PDE describing chemically reacting ows is a challenging task since computational resources are limited. Implicit solution ansatzes of the coupled quantities require a vast amount of storage capacities that is lacking on normal workstations to resolve complex ow structu...

Implicit Methods for Computing Chemically Reacting Flow

Dynamic Optimization of Chemically Reacting Stagnation Flows

This paper presents a dynamic-optimization algorithm that can be used to minimize a generalized objective function. It is demonstrated for a chemical-vapor-deposition (CVD) process in a stagnation-flow reactor. The equations describing the chemically reacting flow are written in a transient compressible similarity form. After discretizing the spatial derivatives on a finite-volume mesh, the sys...

A high-order low-Mach number AMR construction for chemically reacting flows

A high-order projection scheme was developed for the study of chemically reacting flows in the lowMach number limit. The numerical approach for the momentum transport uses a combination of cell-centered/cell-averaged discretizations to achieve a fourth-order formulation for the pressure projection algorithm. This scheme is coupled with a second-order in time operator-split stiff approach for th...