A lattice boltzmann method for wave propagation

We study a lattice Boltzmann model to simulate and predict, on a massively parallel computer, wave propagation in urban environments. This technique naturally takes into account complicated boundary condition. Two-dimensional simulations are performed starting from a city map and a renormalization scheme is proposed to extend our results to three dimensions and adjust the wave length. Our method, which is simple and easy to implement provides good path loss predictions when compared with in-situ measurements. Another promising application derived from our wave model is concerned with craks propagation in solid.

• A paper (COST 231 TD (95) 033) prensented at the European Cooperation in the Field of Scientific and Technical Research (EURO-COST) conference; Bern January 1995. This will give you a first insight to this powefull technic.
• A preprint of our paper submitted to IEE Proceedings Microwaves, Antennas and Propagation.
• Download a public version of our wave propagation software (written in C).
• Benchmark your own implementation and test if you have the right result and good performance.
• Short questions arising from the study of wave propagation and TLM.
• The Marmousi test problem solved with our method.

Pascal O. Luthi: Home Page, Email, Group for Parallel Computing, CUI, University of Geneva
24, Rue du Général Dufour,
1211 Geneva, Switzerland
Tel. ++41 (0)22 705 76 48