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information within the microporous structures. Limitations exist with empirical models and in some cases experiments are required to calibrate the empirical model. Experimental studies of the flow field at the pore level are practically impossible. Thus, in order to explore open‐celled mesophase pitch derived carbon foams for thermal energy management applications, it is convenient to develop representative computer models and then utilize direct numerical simulation for subsequent convective heat transfer simulations. Direct numerical simulation of fluid flow and heat transfer in representative carbon foam models was performed using a commercially available Computational Fluid Dynamics code (ANSYS Inc). Three unit cell models as well were used as geometric representation of carbon foam. Results of the simulation were compared to a 72% porous POCO© foam with an average pore diameter of 350 m. Results of the pressure drop as a function of the air maximum velocity show that the tetrahedral unit cell is a better approximation to mesophase pitch derived carbon foam. Maximum pore Reynolds number for the tetrahedral cell was 600 when experimental conditions were applied. FISCHER TROPSCH PLATFORM ENHANCED BY HIGH THERMAL CONDUCTIVITY CATALYSTS 1 1 1 Tunde Dokun , Don Cahela , Symon Sheng , Hongyun Yang2and *Dr. Bruce J. Tatarchuk Chemical Engineering, Auburn University, Auburn, AL 2Intramicron Inc. Industry Drive. Auburn Al. *tatarbj@auburn.edu Tel: +1‐334‐844‐2023 Abstract In using a Micro‐Fibrous Entrapped Catalyst, MFEC, we simulate and accurately model a Fischer Tropsch reactor which will meet the Navyʹs requirement of producing JP‐5 for portability, process robustness, and volume productivity from a catalyzed reaction involving Syngas (CO2 and H2). MFEC is comprised of a small grain catalyst; Alumina supported Cobalt catalyst, entrapped within a sinter‐locked network of a metal, Stainless Steel and Copper micro fiber. With the use of this metal fiber network, we are able to increase the effective thermal conductivity within the reactor by about 40%, and reduce hot spots within the reactor and increase selectivity for JP5 production. MFEC are readily manufactured and provide high intraparticle and mass transport properties. This poster will incorporate areas of applied fluid mechanics and a mathematical model of transport processes. Using an implicit finite integrating scheme, we are able to determine the reactor temperature profile by modeling a plug flow reactor which includes the energy balances on the gas phase. The catalyst temperature will be assumed to be uniform inside the catalyst particles, so all heat of reaction is generated inside the catalyst particles. This model takes into account the detailed kinetics of the FTS and water gas shift reaction. The application of applied mathematics and numerical methods in solving these sets of differential equations is the key to fully understanding the temperature profile. By effectively designing an FTS reactor that has limited heat transfer issues, an optimized balance of plant can be achieved; where the operating equipments are limited by the weight and volume criteria due to selective production and separation for JP‐5.
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