{"id":33232,"date":"2018-12-20T00:02:41","date_gmt":"2018-12-19T16:02:41","guid":{"rendered":"https:\/\/case.ntu.edu.tw\/blog\/?p=33232"},"modified":"2019-07-31T11:05:38","modified_gmt":"2019-07-31T03:05:38","slug":"%e8%92%b2%e5%85%ac%e8%8b%b1%e7%a8%ae%e5%ad%90%e7%82%ba%e4%bb%80%e9%ba%bc%e8%83%bd%e9%a3%9b%e9%82%a3%e9%ba%bc%e9%81%a0%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/case.ntu.edu.tw\/blog\/?p=33232","title":{"rendered":"\u84b2\u516c\u82f1\u7a2e\u5b50\u70ba\u4ec0\u9ebc\u80fd\u98db\u90a3\u9ebc\u9060\uff1f"},"content":{"rendered":"<p><strong><img fetchpriority=\"high\" decoding=\"async\" class=\"alignleft wp-image-33234\" src=\"http:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2018\/11\/dandelion-3391290_960_720.jpg\" alt=\"\" width=\"450\" height=\"312\" data-wp-pid=\"33234\">\u64b0\u6587\uff5c\u8449\u7da0\u8212<\/strong><\/p>\n<p>\u84b2\u516c\u82f1\uff08dandelions\uff0c<em>Taraxacum officinale<\/em> agg.\uff09\u662f\u591a\u5e74\u751f\u5bbf\u6839\u8349\u672c\u690d\u7269\uff0c\u5168\u4e16\u754c\u90fd\u6709\u5206\u4f48\u3002\u96d6\u7136\u5728\u8a31\u591a\u5340\u57df\u84b2\u516c\u82f1\u88ab\u8996\u70ba\u96dc\u8349\u6216\u5165\u4fb5\u690d\u7269\uff0c\u4f46\u84b2\u516c\u82f1\u5ae9\u8449\u53ef\u5403\u3001\u6839\u4e7e\u71e5\u78e8\u7c89\u5f8c\u53ef\u505a\u70ba\u5496\u5561\u66ff\u4ee3\u7269\u3001\u82b1\u53ef\u4ee5\u7528\u4f86\u6ce1\u84b2\u516c\u82f1\u9152\u3002\u5728\u4e2d\u91ab\u5b78\u4e0a\uff0c\u84b2\u516c\u82f1\u5168\u8349\u7686\u53ef\u5165\u85e5\uff0c\u6709\u300c\u6e05\u71b1\u89e3\u6bd2\uff0c\u6d88\u7670\u6563\u7d50\u300d\u7684\u6548\u679c<a href=\"#_ftn1\" name=\"_ftnref1\">[1]<\/a>\u3002<\/p>\n<p>\u4e0d\u8ad6\u84b2\u516c\u82f1\u5230\u5e95\u662f\u85e5\u7528\u3001\u98df\u7528\u751a\u6216\u662f\u5165\u4fb5\u690d\u7269\uff0c\u76f8\u4fe1\u8a31\u591a\u4eba\u2014\u4e0d\u7ba1\u662f\u5927\u4eba\u6216\u5c0f\u5b69\u2014\u770b\u5230\u84b2\u516c\u82f1\u6210\u719f\u7684\u82b1\u5e8f\u6642\uff0c\u7e3d\u6703\u60f3\u8981\u6458\u4e0b\u5b83\uff0c\u5c0d\u9019\u90a3\u6eff\u6eff\u4e00\u7403\u7684\u7a2e\u5b50\u547c\u5730\u5439\u4e00\u53e3\u6c23\u3002\u770b\u8457\u90a3\u6bdb\u8338\u8338\u7684\u7a2e\u5b50\u6416\u6416\u64fa\u64fa\u5730\u975e\u5411\u5929\u969b\uff0c\u5f77\u5f7f\u6709\u4efb\u4f55\u7169\u60f1\u4e5f\u8ddf\u8457\u7a2e\u5b50\u5011\u98c4\u5411\u9060\u65b9\uff0c\u4e00\u6642\u4ff1\u5fd8\u3002<\/p>\n<p>\u662f\u5426\u66fe\u8a8d\u771f\u7684\u60f3\u904e\uff0c\u84b2\u516c\u82f1\u7684\u7a2e\u5b50\u7a76\u7adf\u80fd\u98c4\u591a\u9060\uff1f\u5b83\u5011\u70ba\u4f55\u80fd\u98c4\u5f97\u90a3\u9ebc\u9060\u5462\uff1f\u611b\u4e01\u5821\u5927\u5b78\u7684\u4e00\u7fa4\u79d1\u5b78\u5bb6\u5011\uff0c\u5c0d\u65bc\u84b2\u516c\u82f1\u7a76\u7adf\u70ba\u4f55\u80fd\u98c4\u5f97\u90a3\u9ebc\u9060\u767c\u751f\u4e86\u8208\u8da3\uff08\u4e00\u822c\u5927\u7d04\u843d\u5728\u5169\u516c\u5c3a\u7684\u7bc4\u570d\u4e4b\u5167\uff0c\u4f46\u6709\u4e9b\u53ef\u98c4\u5230\u4e00\u516c\u91cc\u9060\u4ee5\u5916\u7684\u5730\u65b9\uff09\uff0c\u4fbf\u5efa\u9020\u4e86\u4e00\u500b\u5782\u76f4\u7684\u98a8\u6d1e\uff0c\u4f86\u89c0\u5bdf\u84b2\u516c\u82f1\u7a2e\u5b50\u5011\u5728\u6c23\u6d41\u4e2d\u7684\u8868\u73fe<a href=\"#_ftn2\" name=\"_ftnref2\">[2]<\/a>\u3002<\/p>\n<p>\u79d1\u5b78\u5bb6\u5011\u89c0\u5bdf\u5230\uff1a\u5728\u84b2\u516c\u82f1\u7a2e\u5b50\u51a0\u6bdb\u7684\u4e0a\u65b9\u6703\u7522\u751f\u5206\u96e2\u6e26\u6d41\uff08SVR\uff0cseparated vortex ring\uff09\u3002\u904e\u53bb\u4e5f\u66fe\u6709\u4eba\u63d0\u51fa\u7522\u751f\u5206\u96e2\u6e26\u6d41\u7684\u53ef\u80fd\u6027\uff0c\u4f46\u7e3d\u8a8d\u70ba\u61c9\u8a72\u4e0d\u5920\u7a69\u5b9a\u3002\u6c92\u60f3\u5230\u84b2\u516c\u82f1\u7a2e\u5b50\u51a0\u6bdb\u7684\u4e0a\u65b9\u771f\u7684\u53ef\u4ee5\u770b\u5230\u7a69\u5b9a\u7684\u5206\u96e2\u6e26\u6d41\uff01<\/p>\n<p>\u904e\u53bb\u66fe\u5728\u5be6\u5fc3\u5713\u76e4\u4e0a\u770b\u904e\u6e26\u6d41\u7522\u751f\uff0c\u4f46\u4e00\u822c\u4e0d\u6703\u662f\u5206\u96e2\u7684\uff1b\u5f62\u6210\u5f8c\u4e5f\u4e0d\u5927\u7a69\u5b9a\u3002\u662f\u5426\u9019\u7a69\u5b9a\u7684\u5206\u96e2\u6e26\u6d41\u662f\u7531\u65bc\u84b2\u516c\u82f1\u7a2e\u5b50\u51a0\u6bdb\u7279\u6b8a\u7684\u69cb\u9020\u9020\u6210\u7684\u5462\uff1f\u79d1\u5b78\u5bb6\u5011\u4ed4\u7d30\u6aa2\u8996\u84b2\u516c\u82f1\u7684\u51a0\u6bdb\uff0c\u767c\u73fe\u5b83\u662f\u7531\u5927\u7d04100\u6839\u95777.4\u6beb\u7c73\uff08mm\uff09\u3001\u76f4\u5f9116.3\u5fae\u7c73\uff08mm\uff09\u7684\u7d30\u6bdb\u69cb\u6210\uff0c\u9020\u6210\u6574\u500b\u5713\u76e4\u7684\u7a7a\u9593\u5927\u90e8\u5206\u662f\u7a7a\u7684\uff0891.6%\u70ba\u7a7a\u9593\uff09\u3002<\/p>\n<p>\u96d6\u7136\u9019\u6a23\u69cb\u6210\u7684\u5713\u76e4\u4f3c\u4e4e\u662f\u5927\u90e8\u5206\u7a7a\u7684\uff0c\u4f46\u7814\u7a76\u5718\u968a\u767c\u73fe\uff0c\u500b\u5225\u51a0\u6bdb\u9593\u56e0\u70ba\u6709\u539a\u539a\u7684\u754c\u9762\u5c64\uff08boundary layer\uff09\uff0c\u4f7f\u5f97\u80fd\u6d41\u904e\u51a0\u6bdb\u4e4b\u9593\u7684\u6c23\u6d41\u5927\u5927\u6e1b\u5c11\u3002\u9019\u500b\u73fe\u8c61\u7a31\u70ba\u300c\u58c1\u9762\u6548\u61c9\u300d\uff08wall effect\uff09\u3002\u5728\u300c\u58c1\u9762\u6548\u61c9\u300d\u7684\u5e6b\u52a9\u4e0b\uff0c\u51a0\u6bdb\u80fd\u7522\u751f\u7684\u62d6\u66f3\u6548\u679c\u6bd4\u5be6\u5fc3\u5713\u76e4\uff08\u5982\u76f8\u540c\u5927\u5c0f\u7684\u964d\u843d\u5098\uff09\u8981\u9ad8\u56db\u500d\u3002\u53e6\u5916\uff0c\u5728\u51a0\u6bdb\u6240\u69cb\u6210\u7684\u4f3c\u865b\u5be6\u5be6\u7684\u5713\u76e4\u4e0b\uff0c\u4e5f\u51fa\u73fe\u4e86\u8ca0\u58d3\uff0c\u9032\u4e00\u6b65\u589e\u52a0\u4e86\u62d6\u66f3\u7684\u529b\u91cf\u3002<\/p>\n<p>\u5230\u5e95\u662f\u4e0d\u662f\u56e0\u70ba\u5f62\u6210\u4e86\u9019\u6a23\u4f3c\u865b\u5be6\u5be6\u7684\u69cb\u9020\uff0c\u4f7f\u84b2\u516c\u82f1\u7684\u7a2e\u5b50\u80fd\u98db\u5f97\u66f4\u9ad8\u66f4\u9060\u5462\uff1f\u7814\u7a76\u5718\u968a\u70ba\u4e86\u9032\u4e00\u6b65\u4f50\u8b49\u9019\u500b\u60f3\u6cd5\uff0c\u4fbf\u4ee5\u77fd\u81a0\u505a\u51fa\u4f86\u7684\u5c0f\u5713\u76e4\u4f86\u9032\u884c\u5be6\u9a57\u3002\u4ee5\u591a\u5b54\u6027\u4e0d\u540c\u7684\u77fd\u81a0\u789f\u5728\u98a8\u6d1e\u4e2d\u9032\u884c\u5be6\u9a57\u7684\u7d50\u679c\u767c\u73fe\uff0c\u7576\u591a\u5b54\u6027\u4e0a\u5347\uff08\u4e5f\u5c31\u662f\u77fd\u81a0\u789f\u7684\u578b\u614b\u8d8a\u63a5\u8fd1\u84b2\u516c\u82f1\u51a0\u6bdb\uff09\uff0c\u5728\u77fd\u81a0\u789f\u4e0a\u7522\u751f\u7684\u6e26\u6d41\u8207\u789f\u4e4b\u9593\u7684\u8ddd\u96e2\u4fbf\u958b\u59cb\u62c9\u5927\uff0c\u8ef8\u5c0d\u7a31\u6027\u4e5f\u958b\u59cb\u4e0b\u964d\u2014\u4e5f\u5c31\u662f\u8d8a\u4f86\u8d8a\u50cf\u5728\u84b2\u516c\u82f1\u51a0\u6bdb\u4e0a\u6240\u770b\u5230\u7684\u5206\u96e2\u6e26\u6d41\u4e86\uff01\u904e\u53bb\u4e5f\u66fe\u6709\u7814\u7a76\u767c\u73fe\uff0c\u55ae\u7d14\u7684\u77fd\u81a0\u5713\u76e4\u5728\u7a7a\u6c23\u4e2d\uff0c\u6703\u4e00\u9762\u65cb\u8f49\u4e00\u9762\u5feb\u901f\u7684\u4e0b\u964d\uff1b\u7576\u79d1\u5b78\u5bb6\u628a\u5713\u76e4\u4e2d\u9593\u6253\u500b\u6d1e\u6642\uff0c\u65cb\u8f49\u7684\u72c0\u6cc1\u53cd\u800c\u6e1b\u7de9\uff0c\u800c\u4e0b\u964d\u7684\u901f\u5ea6\u4e5f\u4fbf\u6162\u4e86\u3002\u7e3d\u800c\u8a00\u4e4b\uff0c\u7576\u84b2\u516c\u82f1\u7a2e\u5b50\u56e0\u51a0\u6bdb\u7522\u751f\u7684\u5206\u96e2\u6e26\u6d41\u8207\u4e0b\u65b9\u7684\u8ca0\u58d3\uff0c\u4f7f\u7a2e\u5b50\u5728\u6c23\u6d41\u4e2d\u7de9\u7de9\u4e0a\u5347\u6642\uff0c\u51a0\u6bdb\u7684\u69cb\u9020\u80fd\u66f4\u9032\u4e00\u6b65\u6e1b\u7de9\u65cb\u8f49\uff0c\u65bc\u662f\u5c0f\u5c0f\u7684\u84b2\u516c\u82f1\u7a2e\u5b50\u4fbf\u5728\u98a8\u4e2d\u6276\u6416\u76f4\u4e0a\u3001\u7de9\u7de9\u4e0b\u964d\u4e86\u3002<\/p>\n<p>\u85c9\u98a8\u529b\u50b3\u64ad\u7a2e\u5b50\u7684\u690d\u7269\u4e00\u822c\u5206\u70ba\u5169\u7a2e\uff1a\u4e00\u7a2e\u662f\u5982\u84b2\u516c\u82f1\u4e00\u6a23\uff0c\u4f7f\u7528\u51a0\u6bdb\u6240\u69cb\u6210\u7684\u300c\u62d6\u66f3\u5098\u300d\u7684\u62d6\u66f3\u5098\u6d3e\uff1b\u53e6\u4e00\u7a2e\u5247\u662f\u5982\u6953\u6a39\u4e00\u822c\uff0c\u4ee5\u8584\u819c\u69cb\u6210\u7684\u300c\u6ed1\u7fd4\u7ffc\u300d\u7684\u6ed1\u7fd4\u7ffc\u6d3e\u3002\u70ba\u4f55\u84b2\u516c\u82f1\u4e0d\u9078\u64c7\u6ed1\u7fd4\u7ffc\u800c\u8981\u4f7f\u7528\u62d6\u66f3\u5098\u5462\uff1f\u7814\u7a76\u5718\u968a\u89c0\u5bdf\u767c\u73fe\uff0c\u6ed1\u7fd4\u7ffc\u6d3e\u7684\u7a2e\u5b50\uff0c\u56e0\u70ba\u9700\u8981\u524d\u7de3\u5ef6\u4f38\u6e26\u6d41\uff08leading-edge vortex\uff09\u4f86\u964d\u4f4e\u6ed1\u7fd4\u7ffc\u4e0a\u65b9\u7684\u6c23\u58d3\u4f86\u9054\u6210\u98db\u884c\uff0c\u56e0\u6b64\u9700\u8981\u80fd\u5920\u5f9e\u9ad8\u8655\u6ed1\u4e0b\u624d\u80fd\u6210\u529f\u8d77\u98db\u3002\u96d6\u7136\u6ed1\u7fd4\u7ffc\u6d3e\u53ef\u4ee5\u98db\u5f97\u6bd4\u8f03\u9060\u3001\u4e5f\u80fd\u5e36\u52d5\u6bd4\u8f03\u5927\u7684\u7a2e\u5b50\uff0c\u4f46\u9700\u8981\u5f9e\u9ad8\u8655\u6ed1\u4e0b\u537b\u4e0d\u50c5\u662f\u84b2\u516c\u82f1\u9019\u7a2e\u682a\u9ad8\u53ea\u6709\u5341\u5230\u4e8c\u5341\u516c\u5206\u7684\u5c0f\u8349\u8fa6\u5f97\u5230\u7684\uff0c\u5373\u4f7f\u5c0d\u65bc\u540c\u5c6c\u83ca\u79d1\u7684\u5176\u4ed6\u690d\u7269\u4f86\u8aaa\uff0c\u4e5f\u5927\u6709\u56f0\u96e3\uff1b\u56e0\u6b64\uff0c\u83ca\u79d1\u7684\u98db\u884c\u5c0f\u8349\u5011\u90fd\u4e0d\u7d04\u800c\u540c\u5730\u9760\u5411\u4e86\u62d6\u66f3\u5098\u6d3e\u3002\u53ea\u8981\u5929\u6c23\u597d\u6642\uff0c\u4fbf\u53ef\u770b\u5230\u4e00\u500b\u500b\u5c0f\u5098\u5011\u5f35\u958b\u5b83\u5011\u7684\u51a0\u6bdb\uff0c\u85c9\u8457\u597d\u98a8\u6416\u6416\u64fa\u64fa\u5730\u76f4\u4e0a\u9752\u96f2\uff0c\u518d\u7de9\u7de9\u5730\u964d\u843d\u5230\u53e6\u4e00\u500b\u65b0\u5929\u5730\u56c9\uff01\u4e0d\u904e\u4e5f\u5225\u5c0f\u770b\u62d6\u66f3\u5098\u6d3e\u7684\u690d\u7269\u5011\uff0c\u96d6\u7136\u5927\u90e8\u5206\u84b2\u516c\u82f1\u7684\u7a2e\u5b50\u90fd\u843d\u5728\u5169\u516c\u5c3a\u9644\u8fd1\uff0c\u4f46\u5176\u4ed6\u83ca\u79d1\u7a2e\u5b50\u53ef\u4ee5\u98db\u884c\u8d85\u904e\u4e09\u5341\u516c\u91cc\uff0c\u751a\u81f3\u6709\u8d85\u904e\u4e00\u767e\u4e94\u5341\u516c\u91cc\u7684\u7d00\u9304\u5594\uff01<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u53c3\u8003\u8cc7\u6599\uff1a<\/strong><\/p>\n<p><a href=\"#_ftnref1\" name=\"_ftn1\">[1]<\/a> \u84b2\u516c\u82f1\u3002\u91ab\u782d\u3002\uff08http:\/\/yibian.hopto.org\/yao\/?yno=162\uff09<\/p>\n<p><a href=\"#_ftnref2\" name=\"_ftn2\">[2]<\/a> Cummins C. et. al., 2018. A separated vortex ring underlies the flight of the dandelion.Nature. 562:414-8<\/p>\n<p>&nbsp;<\/p>\n<p><strong>--<\/strong><br \/>\n<strong>\u4f5c\u8005\uff1a\u8449\u7da0\u8212\u3000\u6148\u6fdf\u5927\u5b78\u751f\u547d\u79d1\u5b78\u7cfb\u52a9\u7406\u6559\u6388\uff0c\u79d1\u6559\u4e2d\u5fc3\u7279\u7d04\u5beb\u624b\uff0c\u5f9e\u4e8b\u79d1\u666e\u6587\u7ae0\u5beb\u4f5c\u3002<\/strong><\/p>\n<p><a href=\"https:\/\/line.me\/R\/ti\/p\/%40fcx6182w\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\"alignnone\" src=\"https:\/\/scdn.line-apps.com\/n\/line_add_friends\/btn\/zh-Hant.png\" alt=\"\u52a0\u5165\u597d\u53cb\" width=\"212\" height=\"36\" border=\"0\"><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u25a0\u84b2\u516c\u82f1\u7684\u7a2e\u5b50\u7a76\u7adf\u80fd\u98c4\u591a\u9060\uff1f\u5b83\u5011\u70ba\u4f55\u80fd\u98c4\u5f97\u90a3\u9ebc\u9060\u5462\uff1f\u611b\u4e01\u5821\u5927\u5b78\u7684\u4e00\u7fa4\u79d1\u5b78\u5bb6\u5011\uff0c\u5c0d\u65bc\u84b2\u516c\u82f1\u7a76\u7adf\u70ba\u4f55\u80fd\u98c4\u5f97\u90a3\u9ebc\u9060\u767c\u751f\u4e86\u8208\u8da3\uff08\u4e00\u822c\u5927\u7d04\u843d\u5728\u5169\u516c\u5c3a\u7684\u7bc4\u570d\u4e4b\u5167\uff0c\u4f46\u6709\u4e9b\u53ef\u98c4\u5230\u4e00\u516c\u91cc\u9060\u4ee5\u5916\u7684\u5730\u65b9\uff09\uff0c\u4fbf\u5efa\u9020\u4e86\u4e00\u500b\u5782\u76f4\u7684\u98a8\u6d1e\uff0c\u4f86\u89c0\u5bdf\u84b2\u516c\u82f1\u7a2e\u5b50\u5011\u5728\u6c23\u6d41\u4e2d\u7684\u8868\u73fe\u3002<\/p>\n","protected":false},"author":20,"featured_media":33234,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3293,3100],"tags":[2325,4087],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/case.ntu.edu.tw\/blog\/wp-content\/uploads\/2018\/11\/dandelion-3391290_960_720.jpg","_links":{"self":[{"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/posts\/33232"}],"collection":[{"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=33232"}],"version-history":[{"count":1,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/posts\/33232\/revisions"}],"predecessor-version":[{"id":33235,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/posts\/33232\/revisions\/33235"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=\/wp\/v2\/media\/33234"}],"wp:attachment":[{"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=33232"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=33232"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/case.ntu.edu.tw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=33232"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}