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

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Text this: Laminar entrance region flow of Herschel-Bulkley fluids in a circular pipe