Efficient computation of 'stiff' chemically reacting flow in turbulent free jets
Abstract
The chemically reacting flow in axisymmetric, turbulent free jets is solved numerically by a secondorder accurate finitedifference scheme that is unconditionally stable with respect to the chemical rates. The transport properties are obtained from the 'Turbulent Kinetic Energy' model of turbulence. The momentum, energy, and turbulence model equations are solved by an explicit differencing scheme, whereas a hybrid explicit/implicit scheme is used to solve the species conservation equations. High computational efficiency is attained by solving the equations in a natural coordinate system, and by employing the chemical element conservation principles to minimize the order of the matrix inverted to obtain the species concentrations.
 Publication:

2nd Computational Fluid Dynamics Conference
 Pub Date:
 1975
 Bibcode:
 1975cfd..conf..124T
 Keywords:

 Chemical Reactions;
 Finite Difference Theory;
 Free Jets;
 Jet Flow;
 Run Time (Computers);
 Turbulent Jets;
 Conservation Equations;
 Flow Theory;
 Kinetic Energy;
 Mathematical Models;
 Transport Properties;
 Turbulence Models;
 Fluid Mechanics and Heat Transfer