{"id":52819,"date":"2021-03-03T16:54:18","date_gmt":"2021-03-03T16:54:18","guid":{"rendered":"\/forum\/forums\/topic\/ansys-insight-fdtd-%e5%92%8c-varfdtd-%e5%b8%b8%e8%a7%81%e7%9a%84%e5%8f%91%e6%95%a3%e5%8e%9f%e5%9b%a0%e4%bb%a5%e5%8f%8a%e5%a4%84%e7%90%86\/"},"modified":"2023-06-23T18:26:29","modified_gmt":"2023-06-23T18:26:29","slug":"ansys-insight-fdtd-he-varfdtd-changjiandefasanyuanyinyijichuli","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ansys-insight-fdtd-he-varfdtd-changjiandefasanyuanyinyijichuli\/","title":{"rendered":"Ansys Insight: FDTD \u548c varFDTD \u5e38\u89c1\u7684\u53d1\u6563\u539f\u56e0\u4ee5\u53ca\u5904\u7406"},"content":{"rendered":"
\n
FDTD \u548cMODE \u4e2d\u7684varFDTD\u4f7f\u7528\u7684\u90fd\u662f\u6709\u9650\u5dee\u5206\u65f6\u57df\u7b97\u6cd5\uff0c\u5982\u679c\u67d0\u4e9b\u8bbe\u7f6e\u4e0d\u5f53\uff0c\u4eff\u771f\u5c06\u4f1a\u53d1\u6563\uff0c\u6b64\u65f6\u540e\u7eed\u7684\u8ba1\u7b97\u7ed3\u679c\u53ef\u80fd\u4e0d\u6b63\u786e\u3002\u4e3a\u4e86\u9632\u6b62\u7528\u6237\u8bef\u7528\u5176\u7ed3\u679c\uff0c\u8f6f\u4ef6\u5728\u81ea\u52a8\u7ed3\u675f\uff08\u5373\u8f6f\u4ef6\u68c0\u6d4b\u5230Auto shut off max\uff09\u8d85\u8fc7\u9884\u5148\u8bbe\u5b9a\u7684\u6570\u503c\uff09\u65f6\uff0c\u4f1a\u5728\u6587\u4ef6\u7684\u5de6\u4e0a\u89d2\u7ed9\u51fa\u63d0\u793a\uff0c\u53c2\u89c1\u4e0b\u9762\u8fd9\u4e2a\u56fe\uff1a<\/div>\n
\n

\"\"<\/a><\/p>\n

\u8fd9\u4e2a\u63d0\u793a\u7ed9\u51fa\u4e86\u5e38\u89c1\u7684 \u4e24\u4e2a\u539f\u56e0\u53ca\u89e3\u51b3\u65b9\u6cd5 <\/a> \u3002\u53ea\u8981\u8bca\u65ad\u51fa\u4ea7\u751f\u53d1\u6563\u7684\u539f\u56e0\uff0c\u5c31\u53ef\u4ee5\u5bf9\u75c7\u4e0b\u836f\u3002\u4e00\u822c\u7684\u65b9\u6cd5\u662f\uff0c\u5c06\u6240\u6709\u7684\u8fb9\u754c\u90fd\u6539\u4e3a\u91d1\u5c5eMetal\uff0c\u518d\u8fdb\u884c\u6d4b\u8bd5\u3002\u5982\u679c\u6d4b\u8bd5\u7ed3\u679c<\/p>\n

\uff11\uff1a\u4ecd\u7136\u53d1\u6563\uff0c\u4e00\u822c\u8bf4\u660e\u5176\u539f\u56e0\u4e3b\u8981\u662f\u56e0\u4e3a\u65f6\u95f4\u6b65\u957f\u53ef\u80fd\u5927\u4e86\uff0c\u6b64\u65f6\u53ef\u4ee5\u51cf\u5c0f dt stability factor\uff08\u70b9\u51fbFDTD \u9009Mesh Settings\uff09\u3002\u7f3a\u7701\u503c\u662f 0.99\uff0c \u4e00\u822c\u6539\u4e3a0.95\u6216 0.9\u53ca\u53ef\u4ee5\u89e3\u51b3\uff0c\u6709\u65f6\u9700\u8981\u66f4\u5c0f\uff0c\u9700\u8981\u6d4b\u8bd5\u3002<\/p>\n

\uff12\uff1a\u5982\u679c\u4e0d\u53d1\u6563\uff0c\u8bf4\u660e\u5176\u539f\u56e0\u662fPML\u5f15\u8d77\u7684\u3002 \u6211\u4eec\u4e00\u822c\u63a8\u8350\u4f7f\u7528Stretched coordinate PML\uff0c\u800c\u4e14\u4e00\u822c\u51e0\u4e2a\u65b9\u5411\u7528\u76f8\u540c\u7684PML\u3002 \u7279\u6b8a\u60c5\u51b5\uff0c\u4f8b\u5982\u6ce2\u5bfc\u7ed3\u6784\uff0c\u4e0d\u540c\u65b9\u5411\u53ef\u80fd\u9700\u8981\u4f7f\u7528\u4e0d\u540c\u7684PML\uff1a\u5728\u4f20\u64ad\u65b9\u5411\u53ef\u4ee5\u4f7f\u7528Stabilized\uff0c\u800c\u5176\u5b83\u65b9\u5411\u4f7f\u7528\u6807\u51c6PML\u3002<\/p>\n

\u5e38\u89c1\u7684PML\u4fee\u6539\u65b9\u6cd5\u662f\uff1a<\/p>\n

    \n
  1. \n

    \u4f7f\u7528stabilized\uff0c\u7531\u4e8e\u5438\u6536\u53c2\u6570\u7684\u6539\u53d8\uff0c\u5c42\u6570\u6bd4\u8f83\u591a\uff1b<\/p>\n<\/li>\n

  2. \n

    \u589e\u52a0\u6807\u51c6PML\u7684\u5c42\u6570\uff0c\u7279\u522b\u662f\u7f51\u683c\u5f88\u7ec6\u7684\u60c5\u51b5\u4e0b\uff1b<\/p>\n<\/li>\n

  3. \n

    \u4f7f\u7528Custom PML\uff0c\u589e\u52a0 alpha<\/p>\n<\/li>\n

  4. \n

    \u4e2a\u522b\u60c5\u51b5\u5728PML\u524d\u548cPML\u533a\u7528\u7c97\u7f51\u683c<\/p>\n<\/li>\n

  5. \n

    \u6216\u8005\u589e\u52a0PML\u79bb\u5f00\u7ed3\u6784\u7684\u8ddd\u79bb\uff0c\u4f7f\u5f97PML\u6240\u5728\u533a\u57df\u7684\u7f51\u683c\u6bd4\u8f83\u5927\u3002<\/p>\n<\/li>\n<\/ol>\n

    \u4e00\u822c\u60c5\u51b5\u6211\u4eec\u5efa\u8bae\u7269\u4f53\u8981\u7a7f\u900fPML\u800c\u4e0d\u662f\u5728PML\u533a\u57df\u5185\uff1b\u4f46\u662f\u6709\u4e9b\u6750\u6599\u4f8b\u5982\u91d1\u5c5e\uff0c\u5982\u679c\u6709SPP\u4ea7\u751f\u5f88\u53ef\u80fd\u4f1a\u4ea7\u751f\u53d1\u6563\uff0c\u53ef\u4ee5\u4e0d\u8ba9\u91d1\u5c5e\u7a7f\u900fPML\uff0c\u800c\u662f\u5728\u8dddPML\u81f3\u5c11\u4e00\u4e2a\u7f51\u683c\u3002<\/p>\n

    \u6709\u65f6\u4eff\u771f\u662f\u7531\u4e8e\u6750\u6599\u62df\u5408\u4e0d\u597d\u9020\u6210\u7684\uff0c\u4f8b\u5982\u865a\u90e8\u5c0f\u4e8e\u96f6\uff0c\u5e94\u8be5\u67e5\u770b\u4fee\u6539\u62df\u5408\u3002<\/p>\n

    \u6b64\u5916\uff0c\u6211\u4eec\u4e0d\u5efa\u8bae\u4f7f\u7528\u7f51\u683c\u6bd4aspect ratio\u592a\u5927\u7684\u7ec6\u5316\u7f51\u683c\uff0c\u4f8b\u5982dx = 5nm \u800c dy = 25nm\uff0c\u6b64\u65f6 aspect ratio \u4e3a 5\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e5f\u53ef\u80fd\u4f1a\u5bfc\u81f4\u53d1\u6563\uff08\u53ea\u662f\u53ef\u80fd\uff0c\u5e76\u4e0d\u4e00\u5b9a\uff09\u3002<\/p>\n

    \u5bf9\u4e8e\u5468\u671f\u7ed3\u6784\uff0c\u5982\u679c\u5728\u6d4b\u8bd5\u65f6\u4e0d\u6539\u53d8\u5468\u671f\u8fb9\u754c\uff0c\u800c\u662f\u4ec5\u5c06PML\u6539\u4e3a\u91d1\u5c5e\uff0c\u51cf\u5c0fdt stability factor\u4ecd\u7136\u53d1\u6563\uff0c\u6b64\u65f6\u53ef\u80fd\u662f\u5149\u6e90\u5149\u8c31\u592a\u5bbd\u9020\u6210\u7684\uff0c\u53ef\u4ee5\u5c06\u5149\u6e90\u5728\u65f6\u95f4\u57df\u8bbe\u7f6e\uff0c\u589e\u52a0\u8109\u51b2\u5bbd\u5ea6\u3002<\/p>\n

    \u4e0d\u540cPML\u7c7b\u578b\u7684\u9009\u62e9\u53c2\u89c1 Fdtd\u7b97\u6cd5\u4e2dpml\u7684\u7c7b\u578b\u548c\u9009\u62e9 <\/a><\/p>\n

    \n

    \u60a8\u597d\uff1a
    \u6211\u60f3\u95ee\u4e0b\uff0c\u4eff\u771f\u4e00\u4e2a\u7ed3\u6784\uff0c\u540c\u6837\u7684\u4eff\u771f\u65f6\u95f4\uff0c\u8fb9\u754c\u662fpml\u7684\u65f6\u5019\u53d1\u6563\u4e86\uff0c\u6587\u4ef6\u7684\u5de6\u4e0a\u89d2\u6709\u63d0\u793a\uff0c
    \u7136\u540e\u6362\u6210\u91d1\u5c5e\u7684\u8fb9\u754c\u6761\u4ef6\u68c0\u67e5\u53d1\u6563\u7684\u539f\u56e0\uff0c\u8ba1\u7b97\u7ed3\u675f\uff08\u65f6\u95f4\u5230\u4e86\uff09\uff0c\u6587\u4ef6\u5de6\u4e0a\u89d2\u6ca1\u6709\u51fa\u73b0\u53d1\u6563\u7684\u63d0\u793a\uff0c\u751f\u6210\u7684txt\u4e2d\uff0cauto shutoff\u7684\u503c\u4e5f\u662f\u57281\u7684\u9644\u8fd1\u6765\u56de\u9707\u8361\uff0c\u6211\u60f3\u95ee\u4e00\u4e0b\uff0c\u8fd9\u4e2a\u91d1\u5c5e\u8ba1\u7b97\u7684\u7ed3\u679c\u662f\u53d1\u6563\u7684\u5417\uff0c\u9700\u4e0d\u9700\u8981\u52a0\u957f\u4eff\u771f\u65f6\u95f4\uff08\u4f1a\u4e0d\u4f1a\u662f\u56e0\u4e3a\u4eff\u771f\u65f6\u95f4\u592a\u77ed\u4e86\uff0c\u573a\u6ca1\u6709\u589e\u5927\u5230\u4eff\u771f\u8ba4\u4e3a\u53d1\u6563\u7684\u9608\u503c\u6240\u4ee5\u6ca1\u6709\u63d0\u793a\uff09\uff1f
    \u7136\u540epml\u8ba1\u7b97\u867d\u7136\u53d1\u6563\u4e86\uff0c\u4f46monitor\u4e2d\u7684\u900f\u5c04\u8c31\u90fd\u57281\u4ee5\u4e0b\uff0c\u800c\u6362\u6210\u91d1\u5c5e\u8fb9\u754c\u6761\u4ef6\u4e4b\u540e\uff0c\u900f\u5c04\u8c31\u6709\u7684\u6ce2\u957f\u5904\u662f80,90\u7684\u6837\u5b50\uff0c\u8fd9\u662f\u56e0\u4e3a\u91d1\u5c5e\u8fb9\u754c\u6761\u4ef6\u7684\u53cd\u5c04\u9020\u6210\u7684\u5417\uff1f<\/p>\n

    \n

    \u4f7f\u7528\u91d1\u5c5e\u8fb9\u754c\u53ea\u662f\u4e3a\u4e86\u68c0\u6d4b\u53d1\u6563\u539f\u56e0\uff0c \u4e0d\u80fd\u7528\u5b83\u6765\u83b7\u5f97\u6b63\u786e\u7ed3\u679c <\/strong> \uff0c\u56e0\u4e3a\u91d1\u5c5e\u5c06\u7535\u78c1\u573a\u6765\u56de\u53cd\u5c04\u3002\u60a8\u7684\u7ed3\u6784\u76f8\u5f53\u4e8e\u653e\u7f6e\u5728\u91d1\u5c5e\u8c10\u632f\u8154\u5185\uff0c\u9664\u4e86\u6750\u6599\u5438\u6536\uff0c\u80fd\u91cf\u65e0\u6cd5\u8017\u6563\uff0c\u56e0\u6b64auto shutoff\u7684\u503c\u4e5f\u662f\u57281\u7684\u9644\u8fd1\u6765\u56de\u9707\u8361\u3002<\/p>\n

    \u4e00\u822c\u6765\u8bf4\uff0c\u7528pml\u8ba1\u7b97\u7136\u53d1\u6563\u4e86\uff0c \u7ed3\u679c\u4e5f\u4e0d\u6b63\u786e <\/strong> \uff0c\u56e0\u4e3a\u6709\u4e9b\u6ce2\u957f\u7684\u957f\u88ab\u52a0\u5f3a\u4e86\u3002<\/p>\n

    \u5982\u679c\u4f60\u60f3\u5f97\u5230\u5927\u81f4\u7684\u7ed3\u679c\uff0c\u5e94\u8be5\u5728\u4eff\u771f\u53d1\u6563\u524d\u7ed3\u675f\u4eff\u771f\u3002\u66f4\u7cbe\u786e\u7684\u65b9\u6cd5\u662f\u60f3\u529e\u6cd5\u514b\u670d\u53d1\u6563\uff0c\u4f8b\u5982\u5728\u5149\u6e90\u6ce8\u5c04\u8f74\u65b9\u5411\u4f7f\u7528Stabilized PML\uff0c\u53e6\u5916\u7684\u65b9\u5411\u52a0\u5927\u4eff\u771f\u533a\u5c3a\u5bf8\u7b49\uff0c\u53c2\u89c1\u524d\u9762\u56de\u590d\u3002<\/p>\n

    \n

    \u8c22\u8c22\u60a8\u7684\u7b54\u590d\uff0c
    \u6211\u7684\u610f\u601d\u662f\uff1a\u6362\u6210\u91d1\u5c5e\u8fb9\u754c\u6765\u68c0\u6d4b\u53d1\u6563\u539f\u56e0\uff0c\u5982\u4f55\u5224\u65ad\u662f\u5426\u53d1\u6563\u4e86\uff08\u5728\u91d1\u5c5e\u8fb9\u754c\u6761\u4ef6\u4e0b\uff09\uff0c\u4ee5\u4ec0\u4e48\u4e3a\u6807\u51c6\uff0c\u5de6\u4e0a\u89d2\u51fa\u73b0\u7684\u90a3\u4e2a\u63d0\u793a\u8fd8\u662f\uff1f\u91d1\u5c5e\u8fb9\u754c\u4eff\u771f\u7684\u65f6\u95f4\u548cpml\u8fb9\u754c\u53d1\u6563\u65f6\u4eff\u771f\u65f6\u95f4\u76f8\u540c\u53ef\u4ee5\u5417\uff1f\u4f1a\u4e0d\u4f1a\u56e0\u4e3a\u4eff\u771f\u65f6\u95f4\u592a\u77ed\u9020\u6210\u8bef\u5224\uff1f\u6bd4\u5982\u5728\u91d1\u5c5e\u8fb9\u754c\u6761\u4ef6\u4e0b\uff0c\u672c\u6765\u4f1a\u57286000fs\u53d1\u6563\uff08\u51fa\u73b0\u53d1\u6563\u63d0\u793a\uff09\uff0c\u7ed3\u679c\u6211\u7684\u4eff\u771f\u65f6\u95f4\u53ea\u662f5000fs\uff08\u6216\u8005\u66f4\u77ed\uff09\u4ee5\u81f3\u4e8e\u6ca1\u6709\u51fa\u73b0\u5de6\u4e0a\u89d2\u7684\u53d1\u6563\u63d0\u793a\uff1f<\/p>\n

    \n

    \uff31\uff1a\u6362\u6210\u91d1\u5c5e\u8fb9\u754c\u6765\u68c0\u6d4b\u53d1\u6563\u539f\u56e0\uff0c\u5982\u4f55\u5224\u65ad\u662f\u5426\u53d1\u6563\u4e86
    \uff21\uff1a\u4ee5\u5de6\u4e0a\u89d2\u51fa\u73b0\u7684\u90a3\u4e2a\u63d0\u793a\u4e3a\u53d1\u6563\u7684\u6807\u51c6\u3002\u5f53\u7136\u4e5f\u53ef\u4ee5\u67e5\u770bLog\u6587\u4ef6\uff0c\u5982\u679c\u6587\u4ef6\u663e\u793a Auto Shutoff\u5c0f\u4e8e1\uff0c\u90a3\u53ea\u8bf4\u660e\u4eff\u771f\u65f6\u95f4\u4e0d\u591f\u957f\uff1b\u5982\u679c\u6bd4\u8f83\u5927\uff0c\u90a3\u5c31\u662f\u53d1\u6563\uff0c\u6216\u8005\u5373\u5c06\u8fbe\u5230\u9884\u5148\u8bbe\u5b9a\u7684MAx\uff0c\u5b9e\u9645\u4e0a\u4e5f\u662f\u53d1\u6563\u4e86\u3002\u6536\u655b\u7684\u7ed3\u679c\u5e94\u8be5\u662f\u8fbe\u5230 Auto Shutoff Min\uff0c\u6bd4\u5982
    20.126% complete. Max time remaining: 3 hrs, 22 mins, 3 secs. Auto Shutoff: 1.65618e-009
    \u53e6\u5916\u4e00\u4e2a\u65b9\u6cd5\u5c31\u662f\u67e5\u770b\u65f6\u95f4\u76d1\u89c6\u5668\uff0c\u5982\u679c\u662f\u6307\u6570\u589e\u52a0\uff0c\u90a3\u5c31\u662f\u53d1\u6563\u3002<\/p>\n

    \uff31\uff1a\u91d1\u5c5e\u8fb9\u754c\u4eff\u771f\u7684\u65f6\u95f4\u548cpml\u8fb9\u754c\u53d1\u6563\u65f6\u4eff\u771f\u65f6\u95f4\u76f8\u540c\u53ef\u4ee5\u5417\uff1f
    \uff21\uff1a\u5b83\u4eec\u662f\u4e0d\u540c\u7684\uff0c\u5168\u91d1\u5c5e\u8fb9\u754c\u65f6\uff0c\u80fd\u91cf\u51e0\u4e4e\u6ca1\u6709\u8017\u6563\u6216\u8005\u8017\u6563\u5f88\u6162\uff08\u6750\u6599\u5438\u6536\uff09\uff0c\u4e00\u822c\u662f\u8fd0\u884c\u5230\uff11\uff10\uff10\uff05\u7ed3\u675f\u3002\u800cpml\u8fb9\u754c\u4e00\u822c\u6765\u8bf4\u53d1\u6563\u65f6\u95f4\u4e00\u5b9a\u6bd4\u6240\u8bbe\u7f6e\u7684\u4eff\u771f\u65f6\u95f4\u65e9\u3002<\/p>\n

    \u6b64\u5916\uff0c\u4f60\u4e5f\u53ef\u4ee5\u901a\u8fc7\u65f6\u95f4\u76d1\u89c6\u5668\uff0c\u89c6\u9891\u76d1\u89c6\u5668\u5bdf\u770b\u662f\u5426\u6709\u53d1\u6563\u7684\u8ff9\u8c61\u3002<\/p>\n

    \n

    \u53d1\u6563\u662f\u6307\u4eff\u771f\u7ed3\u675f\u65f6\uff0c\u7535\u78c1\u6ce2\u80fd\u91cf\u4ecd\u672a\u5728\u4eff\u771f\u533a\u57df\u5185\u8017\u5c3d\u5417\uff1f<\/p>\n

    \u5982\u4f55\u901a\u8fc7\u65f6\u95f4\u76d1\u89c6\u5668\u548c\u89c6\u9891\u76d1\u89c6\u5668\u67e5\u770b\u662f\u5426\u6709\u53d1\u6563\u7684\u8ff9\u8c61\u5462\uff1f<\/p>\n

    \u5982\u679c\u901a\u8fc7\u89c6\u9891\u76d1\u89c6\u5668\u67e5\u770b\u7535\u5f71\u540e\uff0c\u770b\u5230\u7535\u78c1\u573a\u5728\u89c6\u9891\u91cc\u6d88\u5931\uff0c\u8fd9\u662f\u5426\u5c31\u662f\u4e0d\u5b58\u5728\u53d1\u6563\uff1f<\/p>\n

    \n
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     <\/div>\n

    Poplar:<\/p><\/div>\n

    \n

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    \u5982\u4f55\u901a\u8fc7\u65f6\u95f4\u76d1\u89c6\u5668\u548c\u89c6\u9891\u76d1\u89c6\u5668\u67e5\u770b\u662f\u5426\u6709\u53d1\u6563\u7684\u8ff9\u8c61\u5462\uff1f<\/p>\n

    \u5982\u679c\u901a\u8fc7\u89c6\u9891\u76d1\u89c6\u5668\u67e5\u770b\u7535\u5f71\u540e\uff0c\u770b\u5230\u7535\u78c1\u573a\u5728\u89c6\u9891\u91cc\u6d88\u5931\uff0c\u8fd9\u662f\u5426\u5c31\u662f\u4e0d\u5b58\u5728\u53d1\u6563\uff1f<\/p>\n<\/blockquote>\n

    \u5f77\u771f\u767c\u6563\u662f\u6307\u7535\u78c1\u6ce2\u80fd\u91cf\u5728\u589e\u9577, \u5982\u679c\u7cfb\u7d71\u6c92\u6709\u589e\u76ca, \u5c31\u8aaa\u660e\u7535\u78c1\u6ce2\u80fd\u91cf\u7684\u589e\u9577\u662f\u975e\u7269\u7406\u7684\u3002\u65f6\u95f4\u76d1\u89c6\u5668\u548c\u89c6\u9891\u76d1\u89c6\u5668\u90fd\u662f\u6642\u9593\u57df\u7684, \u6240\u4ee5\u53ef\u4ee5\u770b\u5230\u767c\u6563\u7684\u72c0\u6cc1, \u5728debugging\u7684\u6642\u5019\u6703\u6709\u7528\u3002<\/p>\n

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    \u60a8\u597d\uff01\u6211\u60f3\u95ee\u4e0b\uff0c\u4eff\u771f\u6838\u58f3\u7ed3\u6784\uff0c\u8f6f\u4ef6\u63d0\u793a\u53d1\u6563\uff0c\u7136\u540e\u8bbe\u7f6e\u6210Metal\u8fb9\u754c\u8fd8\u662f\u53d1\u6563\uff0c\u4e4b\u540e\u6211\u628adt\u8c03\u62100.5\u540e\uff0c\u8fd8\u662f\u53d1\u6563\u3002\u8fd9\u662f\u4ec0\u4e48\u539f\u56e0\uff1f<\/p>\n

    \n

    \u901a\u5e38 \uff0c\u628amesh \u7cbe\u5ea6\uff0cpml\u8fb9\u754c\u63d0\u9ad8\u5c31\u597d\u4e86<\/p>\n

    \n

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