NUMERICAL-SIMULATION OF INTERNAL GRAVITY-WAVES USING A LATTICE-GAS MODEL

Internal waves are modelled in two different circumstances: in a conti nuously stratified fluid and at the interface between two immiscible f luids. This is done using the lattice gas approach. The standard singl e phase model and an immiscible two-phase model are both modified to i ncorporate gravitational interactions. Standing internal waves are set up in both models and are seen to oscillate under the action of the g ravitational interaction. The results obtained suggest that the lattic e gas approach can be a useful tool in the modelling of such phenomena . (C) 1998 John Wiley & Sons, Ltd.