%0 Journal Article
%T The influence of longitudinal micro grooves on hydrodynamic friction drag of a plate §£§Ý§Ú§ñ§ß§Ú§Ö §á§â§à§Õ§à§Ý§î§ß§í§ç §Þ§Ú§Ü§â§à§Ò§à§â§à§Ù§Õ§à§Ü §ß§Ñ §Ô§Ú§Õ§â§à§Õ§Ú§ß§Ñ§Þ§Ú§é§Ö§ã§Ü§à§Ö §ã§à§á§â§à§ä§Ú§Ó§Ý§Ö§ß§Ú§Ö §ä§â§Ö§ß§Ú§ñ §á§Ý§Ñ§ã§ä§Ú§ß§í §£§±§­§ª§£ §±§°§¥§°§£§¨§¯ §· §® §¬§²§°§¢§°§²§°§©§¥§°§¬ §¯§¡ §¤ §¥§²§°§¥§ª§¯§¡§® §¹§¯§ª§« §°§± §² §´§¦§²§´§Á §±§­§¡§³§´§ª§¯§ª
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%J Proceedings of National Aviation University
%D 2005
%I National Aviation University
%X Weight measurements in a water tunnel have shown that there exist a range of parameters of longitudinally fine-ribbed surface such that turbulent friction in flow over the surface is less than that over a smooth flat plane of the same projected area. Maximum drag reduction due to ribbing is up to 16%.  §³ §á§à§Þ§à§ë§î§ð §Ó§Ö§ã§à§Ó§í§ç §Ú§Ù§Þ§Ö§â§Ö§ß§Ú§Û §Ó §Ô§Ú§Õ§â§à§Õ§Ú§ß§Ñ§Þ§Ú§é§Ö§ã§Ü§à§Û §ä§â§å§Ò§Ö §á§à§Ü§Ñ§Ù§Ñ§ß§à, §é§ä§à §Õ§Ý§ñ §Þ§Ö§Ý§Ü§à§â§Ö§Ò§â§Ú§ã§ä§à§Û §á§â§à§Õ§à§Ý§î§ß§à §à§Ò§ä§Ö§Ü§Ñ§Ö§Þ§à§Û §á§à§Ó§Ö§â§ç§ß§à§ã§ä§Ú §ã§å§ë§Ö§ã§ä§Ó§å§Ö§ä §Õ§Ú§Ñ§á§Ñ§Ù§à§ß §á§Ñ§â§Ñ§Þ§Ö§ä§â§à§Ó, §Ó §Ü§à§ä§à§â§à§Þ §ã§à§á§â§à§ä§Ú§Ó§Ý§Ö§ß§Ú§Ö §ä§å§â§Ò§å§Ý§Ö§ß§ä§ß§à§Ô§à §ä§â§Ö§ß§Ú§ñ §Þ§Ö§ß§î§ê§Ö, §é§Ö§Þ §å §Ô§Ý§Ñ§Õ§Ü§à§Û §á§Ý§à§ã§Ü§à§Û §á§Ý§Ñ§ã§ä§Ú§ß§í §ã §ä§Ñ§Ü§à§Û §Ø§Ö §á§Ý§à§ë§Ñ§Õ§î§ð §á§â§à§Ö§Ü§è§Ú§Ú. §±§â§Ú §ï§ä§à§Þ §Þ§Ñ§Ü§ã§Ú§Þ§Ñ§Ý§î§ß§à§Ö §ã§ß§Ú§Ø§Ö§ß§Ú§Ö §Ü§à§ï§æ§æ§Ú§è§Ú§Ö§ß§ä§Ñ §ä§â§Ö§ß§Ú§ñ §Ù§Ñ §ã§é§Ö§ä §à§â§Ö§Ò§â§Ö§ß§Ú§ñ §ã§à§ã§ä§Ñ§Ó§Ú§Ý§à §Õ§à 16%.  §©§Ñ §Õ§à§á§à§Þ§à§Ô§à§ð §Ó§Ñ§Ô§à§Ó§Ú§ç §Ó§Ú§Þ §â §Ó §å §Ô §Õ§â§à§Õ§Ú§ß§Ñ§Þ §é§ß §Û §ä§â§å§Ò  §á§à§Ü§Ñ§Ù§Ñ§ß§à, §ë§à §Õ§Ý§ñ §Õ§â §Ò§ß§à§â§Ö§Ò§â§Ú§ã§ä§à  §á§à§Õ§à§Ó§Ø§ß§î§à §à§Ò§ä §é§ß§à  §á§à§Ó§Ö§â§ç§ß   §ã§ß§å  §Õ §Ñ§á§Ñ§Ù§à§ß §á§Ñ§â§Ñ§Þ§Ö§ä§â §Ó, §Ó §ñ§Ü§à§Þ§å §à§á §â §ä§å§â§Ò§å§Ý§Ö§ß§ä§ß§à§Ô§à §ä§Ö§â§ä§ñ §Þ§Ö§ß§ê§Ú§Û, §ß §Ø §å §Ô§Ý§Ñ§Õ§Ü§à  §á§Ý§à§ã§Ü§à  §á§Ý§Ñ§ã§ä§Ú§ß§Ú §Ù §ä§Ñ§Ü§à§ð §ã§Ñ§Þ§à§ð §á§Ý§à§ë§Ö§ð §á§â§à§Ö§Ü§è  . §±§â§Ú §è§î§à§Þ§å §Þ§Ñ§Ü§ã§Ú-§Þ§Ñ§Ý§î§ß§Ö §Ù§ß§Ú§Ø§Ö§ß§ß§ñ §Ü§à§Ö§æ §è  §ß§ä§Ñ §ä§Ö§â§ä§ñ §Ù§Ñ §â§Ñ§ç§å§ß§à§Ü §à§â§Ö§Ò§â§Ö§ß§ß§ñ §ã§ä§Ñ§ß§à§Ó§Ú§Ý§à §Õ§à 16%.
%U http://jrnl.nau.edu.ua/index.php/visnik/article/view/1119