Products

 

 

Graduate Students

Students trained in combustion technology are one of the most important products resulting from the activities in ACERC. The students can receive training in experimental and theoretical combustion research from leading experts in combustion technology. These students go on to be successful employees in a variety of combustion-related industries, and provide one of the most effective means available to transfer the technology developed in ACERC to industry.

 

97-COSMO-GT

A three-dimensional computer code specifically developed for the simulation of gas turbine combustors. The chemical kinetics and coupling of the turbulence and chemistry are incorporated through a submodel for lean, pre-mixed combustion of natural gas (LEPRECON). This approach is applicable for both premixed and non-premixed systems. A mixing-limited, pdf approach to the chemical reactions is also available for non-premixed systems. The flow field is solved in an Eulerian framework using an unstructured, tetrahedral mesh. The unstructured grid approach is well suited for simulation of the complex geometries associated with gas turbines. The Control Volume Finite Element Method (CVEFM) coupled with a variation of the SIMPLE technique is used for solution of the resulting equations resulting from discretization of the Navier-Stokes equations.

 

96-FBED-1

A generalized, one-dimensional, heterogeneous, steady-state analysis and design tool that can be used to simulate a variety of fixed or moving bed gasification, combustion, and devolatilization processes. The model considers separate gas and solid temperatures, axially variable solid and gas flow rates, variable bed void fraction, coal drying, devolatilization based on chemical functional group composition, oxidation and gasification of char, and partial equilibrium in the gas phase. Plug flow is assumed in both the solid and gas phase. A set of 44 highly non-linear, stiff, coupled ordinary differential equations are used to describe the physical and chemical processes occurring within the reactor. Options for partial or complete chemical equilibrium are available. The code is written in FORTRAN 77, and the source code is provided with a comprehensive usersmanual for a one-time licensing fee.

 

CPD Model

The Chemical Percolation Devolatilization (CPD) model describes the devolatilization behavior of rapidly heated coal, based on the chemical structure of the parent coal. The CPD model has been developed to function either as a standalone code or as a submodel in a comprehensive combustion code. It includes treatment of vapor-liquid equilibrium and a crosslinking mechanism. The CPD model successfully predicts the effects of pressure on tar and total volatiles yields observed in heated grid experiments for both bituminous and lignite coals. Predictions of the amount and characteristics of gas and tar from many different coals compare well with available data. The code is written in FORTRAN, and is available for free; however, no support is available from ACERC on use of the CPD model.

 

SLW Model

A radiative property model for H₂O-CO₂ mixtures, which accounts for non-gray radiative transfer in gases in an efficient manner. The Spectral-Line Weighted-Sum-of-Gray-Gases (SLW) model predicts radiative transfer in high temperature gases with accuracy approaching that of much more costly line-by-line techniques. The model may be applied using any arbitrary solution method for the Radiative Transfer Equation (RTE), which requires a locally defined absorption coefficient. The SLW model can be used in multi-dimensional, irregular geometries where scattering must be accounted for. The model has also been extended to high pressures. The code is written in FORTRAN, and is available for a one-time license fee, which includes the source code and a brief user's manual.