In situ adaptive tabulation (ISAT) to accelerate transient computational fluid dynamics with complex heterogeneous chemical kinetics |
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| Affiliation: | 1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;2. Research Institute of Natural Gas Technology, PetroChina Southwest Oil and Gas Field Company, Chengdu 610213, China;3. Institute of Chemical Reaction Engineering, Hamburg University of Technology, Hamburg D-21073, Germany;1. Department of Mechanical and Aerospace Engineering, Princeton University, United States;2. School of Engineering, Chongqing University, China;3. Ansys, Inc., 10 Cavendish Court Lebanon, NH 03766, United States;4. SKLTCS, College of Engineering, Peking University, China;1. Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC, USA;2. Department of Mathematics, Kuwait University, Kuwait |
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| Abstract: | This paper extends the in situ adaptive tabulation (ISAT) algorithm for accelerating the simulation of complex heterogeneous chemical kinetics within transient, three-dimensional, computational fluid dynamics (CFD). The ISAT algorithm, initially developed for homogeneous combustion kinetics, takes advantage of the fact that initial conditions for the chemistry in a particular cell (i.e., temperature and composition) may have been present in this cell or another cell earlier in the simulation. In such cases, the solution can be extracted from a tabulation of prior solutions more efficiently than solving the local kinetics problem. The ISAT algorithm uses efficient tabulation and retrieval algorithms, greatly accelerating the solution process. Illustrative results are based on the simulation of methane reforming in a catalytic microchannel reactor, considering coupled fluid mechanics, catalytic chemistry, and conjugate heat transfer. |
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| Keywords: | In situ adaptive tabulation (ISAT) Heterogeneous kinetics Catalysis Computational fluid dynamics Microchannel reformer |
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