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            _____     ______    ______    ______  
    ___    |  ___||  /_____//  /_   _//  /_   _// 
   /   ||  | ||__    `____ `    -| ||-   `-| |,-  
  | [] ||  | ||__    /___//     _| ||_     | ||   
   \__ ||  |_____||  `__ `     /_____//    |_||   
    -|_||  `-----`   /_//      `-----`     `-`'   
     `-`             `-`

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Text this: A study of natural convection from a vertical cylinder with variable surface temperature