Verification testing of the S-cubed entrained-flow coal gasification code

This report summarizes a study to evaluate and apply the Department of Energy Electric Power Research Institute (DOE/EPRI)-supported entrained-flow coal gasification code (EFC). The code received was written for a UNIVAC 1100/80 computer, and several aspects required modification to adapt it to the Cray-1 computer. Following adaptation to the Cray-1, the sample problem in the EFC user's manual was run to assure that the Cray-1 version agreed with the previous version. The EFC was evaluated partially by modeling a series of increasingly complex problems and using analytical solutions or experimental measurements for comparisons. These problems include a classic Riemann shock, a laminar nonreacting jet, and a turbulent nonreacting jet. The comparisons for the one-dimensional shock problem showed good agreement. The comparisons for the laminar jet showed only qualitative agreement and resulted in an unacceptably large amount of computer time used to achieve a steady-state solution. The comparisons for the turbulent jet could not be made because of problems in the programming of the k-epsilon turbulence model. Recommendations to enhance code utility for potential users are discussed. 30 refs., 15 figs., 8 tabs.