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  _____     _____    _    _      ___      ______  
 /  ___||  |  ___|| | |  | ||   / _ \\   /_   _// 
| // __    | ||__   | |/\| ||  | / \ ||    | ||   
| \\_\ ||  | ||__   |  /\  ||  | \_/ ||   _| ||   
 \____//   |_____|| |_// \_||   \___//   /__//    
  `---`    `-----`  `-`   `-`   `---`    `--`

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Text this: Flow transitions in collisions between vortex-rings and density interfaces