Numerical study on the turbulent reacting flow in the vicinity of the injector of an LDPE tubular reactor |
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| Authors: | E van Vliet JJ Derksen HEA van den Akker |
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| Affiliation: | a Department of Multi-Scale Physics, Delft University of Technology, Prins Bernhardlaan 6, 2628 BW Delft, Netherlands
b Department of Chemical and Biological Engineering, Sweeney Hall, Iowa State University, Ames, IA 50011-2230, USA |
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| Abstract: | Three-dimensional (3-D), transient numerical simulations of the turbulent reacting flow in the vicinity of the initiator injection point of a low-density polyethylene (LDPE) tubular reactor using a large eddy simulation (LES) approach combined with a filtered density function (FDF) technique are presented. The numerical approach allows for detailed predictions of the turbulent flow field and the associated (passive and reactive) scalar mixing. The aim is to study the influence of the injector geometry and initiator injection temperature on the LDPE process in terms of product quality (average polymer chain length, and polydispersity) and process efficiency (such as initiator consumption). |
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| Keywords: | Hydrodynamics Turbulence Chemical reactors Mixing Simulation Filtered density function Low-density polyethylene |
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