Welcome to the 2008 annual seminar on Mathematics in Chemical Kinetics and Engineering (Ghent University, Belgium, Wednesday, May 23rd, 2008)! The Laboratory for Chemical Technology (LCT) and the Research Group for Numerical functional analysis and Mathematical Modelling (NfaM2) of Ghent University are pleased to invite you to attend the annual seminar on "Mathematics in Chemical Kinetics and Engineering" which will be held on May 23, 2008 in Ghent, Belgium. After the successful international Mackie-200(2,7) conferences and Mackie-200(3,4,5,6) Annual Seminars, the local organizers at Ghent University have again invited two world-class experts from the fields of mathematics and chemical engineering, Prof. Andro Mikelic (Lyon) and Prof. Harry van den Akker (Delft), to give seminar talks during a one-day mini-symposium. Participation to the seminar is free, but registration is strongly recommended before May 9, 2008. Please e-mail to Denis.Constales@UGent.be to register. A complimentary lunch is offered to the participants at the venue. Vegetarian and other special requirements can be met if mentioned in the registration e-mail. Deadlines * May 9, 2008: Registration deadline. Organizing Committee - Denis Constales (NFaM2) - Geraldine Heynderickx (LCT) - Guy Marin (LCT) - Roger Van Keer (NFaM2) Program * 10:00 Coffee and registration * 10:45 Introduction * 11:00 Andro Mikelic on Effective Dispersion Equations For Reactive Flows With Dominant Peclet and Damkohler Numbers * 12:00 Question time and discussion * 12:30 Lunch * 14:30 Harry van den Akker on Computational Reactor Engineering: pretty extreme, extremely pretty. * 15:30 Question time and discussion * 16:00 Concluding remarks and closing address Venue The annual seminar on Mathematics in Chemical Kinetics and Engineering will be held in the Pand, a renovated ancient building owned by Ghent University, and situated in the heart of Ghent's historical centre (address: Onderbergen 1). Abstracts "Effective Dispersion Equations For Reactive Flows With Dominant Peclet and Damkohler Numbers." By Prof. dr. Andro Mikelic, Institut Camille Jordan, UFR Mathematiques Universite Claude Bernard Lyon 1, Lyon, France. We study reactive flows through a capillary tube. The solute particles are transported and diffused by the fluid. At the tube lateral boundary they undergo an adsorption-desorption process. The transport and reaction parameters are such that we have large, dominant Peclet and Damkohler numbers with respect to the ratio of characteristic transversal and longitudinal lengths (the small parameter epsilon). Using the anisotropic singular perturbation technique we derive the effective equations. In the absence of the chemical reactions they coincide with Taylor's dispersion model. The result is compared with the turbulence closure modeling and with the center manifold approach. Furthermore, we present a numerical justification of the model by a direct simulation of the full problem and of the effective equations. We present several numerical experiments. Next, we use the Laplace transform in time to get precise dependence on the parameter epsilon and rigorously show that our effective equations, with Taylor dispersion terms and chemical reactions contributions, give an approximation in the energy norm, which is uniform in time and always better than constant times the ratio between the characteristic transversal diffusion time and the characteristic longitudinal transport time. This result confirms the numerical experiments and justifies the dimensional reduction. Work in collaboration with C.J. van Duijn, I.S. Pop (Eindhoven, The Netherlands), C. Rosier (Calais, France) and C. Choquet (Marseille, France). "Computational Reactor Engineering: pretty extreme, extremely pretty." By Prof. dr ir. Harry E.A. van den Akker, Department of Multi-Scale Physics, Technical University Delft, The Netherlands. Computational simulations of chemical reactions combined with flow, mixing and transport phenomena in realistic 3-D geometries are very promising with a view of improving the performance of chemical reactors. Turbulent-flow conditions present enormous challenges compared to laminar-flow conditions, multi-phase flow being even more challenging. The seminar covers Reynolds-Averaged Navier-Stokes, Large-Eddy and Direct Numerical Simulations. Various mathematical techniques (Finite Volume, Lattice-Boltzmann, Monte Carlo) are available for solving the set of transport equations. The challenge is to control computational time. The potential success of the approach is illustrated by means of detailed simulation results as to a commercial-scale high-pressure low-density polyethylene polymerization reactor. For the latest information, consult the annual seminar's Web site at www.mackie-workshops.com !