發送短信 : Study of flow over dimpled cylinder

__    __    ______   _____       ___     _____    
\ \\ / //  /_   _// |  __ \\    / _ \\  |  __ \\  
 \ \/ //    -| ||-  | |  \ ||  | / \ || | |  \ || 
  \  //     _| ||_  | |__/ ||  | \_/ || | |__/ || 
   \//     /_____// |_____//    \___//  |_____//  
    `      `-----`   -----`     `---`    -----`