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

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Text this: Free convection from a heated vertical cylinder with variable surface temperature