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             ___     _    _      ___      _____   
  ____      / _ \\  | \  / ||   / _ \\   |__  //  
 |    \\   / //\ \\ |  \/  ||  | / \ ||    / //   
 | [] ||  |  ___  ||| .  . ||  | \_/ ||   / //__  
 |  __//  |_||  |_|||_|\/|_||   \___//   /_____|| 
 |_|`-`   `-`   `-` `-`  `-`    `---`    `-----`  
 `-`

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Text this: Cooling of liquid in a tube under rotation