The findings could provide key information on the transient behavior of supersonic flow, finding application in different fields, such as the manufacture of electronic products or underwater vehicles.
A team of researchers from France and from India has recently published a study in the journal Physics of Fluids in which they maintain that the simple action of uncorking a bottle of champagne unleashes the same physical and chemical interactions that are observed in the takeoff of a space rocket or in a recently fired bullet.
The researchers found that, in the initial phase, the gas mixture is partially blocked by the cork, preventing that the ejected champagne reaches the speed of sound. But as the cork breaks free, gases escape radially at supersonic speed, balancing its pressure through a succession of shock waves.
The waves then combine to form shock diamonds, ring patterns that are normally see in the exhaust columns of the rockets. The symmetry of the bottle, on the other hand, leads to a supersonic coronal expansion.
“Our article unravels the unexpected and beautiful flow patterns that lurk right under our noses every time a bottle of champagne is popped,” says Gérard Liger-Belair, co-author of the study.
These findings could provide key information on the transient behavior of supersonic flow, finding application in a wide variety of fields, such as launching of ballistic missiles, the operation of wind turbines and even the manufacture of electronic products or underwater vehicles.
Researchers are also interested in how the supersonic flow is affected by the formation of ice particles caused by the drastic drop in the temperature when the fizz comes out of the champagne bottle, po r so they also plan to explore other parameters, such as temperature, volume and neck diameter of it.