Micromixing in nonisothermal reactive systems
Date
1997
Authors
Sheikh, Farooq Naseem
Major Professor
Advisor
Vigil, R. Dennis
Committee Member
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Abstract
In this work, micromixing effects on fractional conversion and bistability are studied for a first order nonisothermal adiabatic reaction in a continuous stirred tank reactor. The CD model and the steady state nonisothermal IEM model (Marconi and Vatistas, 1992) are used and the results are compared. Thermal time distributions (Nauman, 1977) are found using the CD model. Fractional conversion is calculated by operating the reactor at an equivalent isothermal temperature found from the thermal time distribution. Results are compared with the fractional conversion obtained from the CD and the IEM model. Simulations were performed with N=500, since no significant differences were observed with N>500. The droplets react for time period T according to reaction simulation then there is flow and coalescence according to flow simulation and coalescence simulation. The concentration in the reactor is calculated by averaging over all the droplets. These steps are repeated until the average concentration converges indicating steady state.
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thesis