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  ____     __   __    _  __    _____    __   _   
 |  _ \\   \ \\/ //  | |/ //  |  ___|| | || | || 
 | |_| ||   \ ` //   | ' //   | ||__   | '--' || 
 | .  //     | ||    | . \\   | ||__   | .--. || 
 |_|\_\\     |_||    |_|\_\\  |_____|| |_|| |_|| 
 `-` --`     `-`'    `-` --`  `-----`  `-`  `-`

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Text this: Cooling of liquid in a tube under rotation