Two-fluid system.

Combust Man.

Dear All,

I am developing a premixed combustion code which uses the reaction progress variable idea to separate burnt and unburnt gases. The density ratio is approximately 7.

I am looking for several simple test cases often used for either two phase flows or premixed combustion which involve density ratio's of this size. I have found many test cases which use air and water (density ratio of 1000), but these involve surface tension and other effects. Any help would be appreciated.