The application of multigrid methods is complicated if the set of governing equations contains strongly nonlinear source terms. This is the case for finite-rate chemistry as well as for turbulence conservation equations. In most cases strong nonlinearities within the chemical production rates preven
Comparison of ODE methods for laminar reacting gas flow simulations
✍ Scribed by S. van Veldhuizen; C. Vuik; C.R. Kleijn
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 337 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0749-159X
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✦ Synopsis
Abstract
Two‐dimensional transient simulations are presented of the transport phenomena and multispecies, multireaction chemistry in chemical vapor deposition (CVD). The transient simulations are run until steady state, such that the steady state can be validated against the steady state solutions from literature. We compare various time integration methods in terms of efficiency and robustness. Besides stability, which is important due to the stiffness of the problem, preservation of non‐negativity is crucial. It appears that this latter condition on a time integration method is much more restrictive toward the time step size than stability. © 2007 Wiley Periodicals, Inc. Numer Methods Partial Differential Eq, 2008
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