{"id":1516,"date":"2021-10-10T12:32:23","date_gmt":"2021-10-10T03:32:23","guid":{"rendered":"http:\/\/www.miyamoto-lab.com\/?page_id=1516"},"modified":"2021-10-10T14:06:00","modified_gmt":"2021-10-10T05:06:00","slug":"1qagfdfkgaj","status":"publish","type":"page","link":"https:\/\/www.miyamoto-lab.com\/ja\/1qagfdfkgaj\/","title":{"rendered":"7. \u7df4\u7fd2\u554f\u984c\u7b54\u3048\u30fb2"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u3082\u3068\u3082\u3068\u3001<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized is-style-default\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.miyamoto-lab.com\/wp-content\/uploads\/2020\/10\/0.jpg\" alt=\"\" class=\"wp-image-362\" width=\"478\" height=\"131\" srcset=\"https:\/\/www.miyamoto-lab.com\/wp-content\/uploads\/2020\/10\/0.jpg 478w, https:\/\/www.miyamoto-lab.com\/wp-content\/uploads\/2020\/10\/0-300x82.jpg 300w\" sizes=\"auto, (max-width: 478px) 100vw, 478px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u306e\u3088\u3046\u306a\u5f62\u3092\u521d\u671f\u6761\u4ef6\u3068\u3057\u3066\u3044\u308b\u3002\u3053\u308c\u304c\u4e00\u5b9a\u901f\u5ea6\u3067\u53f3\u306b\u52d5\u3044\u3066\u884c\u3063\u3066\u3082\u3089\u3044\u305f\u3044\u3068\u8003\u3048\u3066\u3044\u308b\u308f\u3051\u3060\u304c\u3001\u5b9f\u969b\u306b\u306f<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-style-default\"><img loading=\"lazy\" decoding=\"async\" width=\"426\" height=\"208\" src=\"https:\/\/www.miyamoto-lab.com\/wp-content\/uploads\/2020\/10\/1.jpg\" alt=\"\" class=\"wp-image-363\" srcset=\"https:\/\/www.miyamoto-lab.com\/wp-content\/uploads\/2020\/10\/1.jpg 426w, https:\/\/www.miyamoto-lab.com\/wp-content\/uploads\/2020\/10\/1-300x146.jpg 300w\" sizes=\"auto, (max-width: 426px) 100vw, 426px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u306a\u3063\u3066\u3057\u307e\u3044\u3001\u8a08\u7b97\u304c\u5b89\u5b9a\u3057\u3066\u304f\u308c\u306a\u3044\u3002\u305d\u3053\u3067\u5dee\u5206\u306e\u65b9\u6cd5\u3092\u3084\u308a\u306a\u304a\u3057\u3066\u3001<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">$$T_i^{n+1}=T_i^{n}-u\\frac{\\Delta t}{\\Delta x}(T_{i}^n-T_{i-1}^n)$$<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u3057\u3066\u307f\u308b\u3002\u8a08\u7b97\u3092100\u30b9\u30c6\u30c3\u30d7\u3054\u3068\u306b\u7d50\u679c\u3092\u66f8\u304d\u3060\u3059\u3088\u3046\u306b\u5909\u66f4\u3057\u3066\u3001\u3055\u3089\u306b\u6642\u9593\u6642\u9593\u309210\u304b\u3089500\u306b\u5909\u66f4\u3057\u3066\u307f\u308b\u3068\u3001<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-c\" data-lang=\"C\"><code>#include &lt;stdio.h&gt;\n#include &lt;math.h&gt;\n#define u 1.0\n#define dt 0.1\n#define xmax 200\n#define imax 200\n#define tmax 500\n\nint main(void){\n  double dx=(double)xmax\/imax;\n  double x;\n  double T[xmax+1],cfl;\n  int t;\n  cfl=u*dt\/dx;\n  int i;\n  for (i=0; i&lt;=imax; i++){\n    if (i&gt;=10&&i&lt;50)\n      T[i]=1.0;\n    else\n      T[i]=0.0;\n  }\n  for (i=1; i&lt;imax; i++)\n    printf(&quot;%2.2e,&quot;,T[i]);\n  printf(&quot;\\n&quot;);   \n  for (t=1; t&lt;=tmax; t++){\n    for (i=1; i&lt;imax; i++)\n      T[i]=T[i]-cfl*(T[i]-T[i-1]);\n    if (t%100==0){\n      for (i=1; i&lt;imax; i++)\n        printf(&quot;%2.2e,&quot;,T[i]);\n      printf(&quot;\\n&quot;);\n    }\n  }  \n} <\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3059\u308b\u3068\u3001<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-style-default\"><img loading=\"lazy\" decoding=\"async\" width=\"362\" height=\"215\" src=\"https:\/\/www.miyamoto-lab.com\/wp-content\/uploads\/2020\/10\/2.jpg\" alt=\"\" class=\"wp-image-367\" srcset=\"https:\/\/www.miyamoto-lab.com\/wp-content\/uploads\/2020\/10\/2.jpg 362w, https:\/\/www.miyamoto-lab.com\/wp-content\/uploads\/2020\/10\/2-300x178.jpg 300w\" sizes=\"auto, (max-width: 362px) 100vw, 362px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u306a\u3063\u3066\u3001\u304b\u306a\u308a\u5b89\u5b9a\u3057\u305f\u8a08\u7b97\u304c\u3067\u304d\u3066\u3044\u308b\u3053\u3068\u306b\u6c17\u304c\u4ed8\u304f\u3002\u3057\u304b\u3057\u672c\u6765\u306f\u9752\u8272\u306e\u89d2\u3070\u3063\u305f\u5f62\u72b6\u3067\u3042\u3063\u305f\u3082\u306e\u304c\u3001500\u30b9\u30c6\u30c3\u30d7\u5f8c\u306b\u306f\u4e38\u307e\u3063\u305f\u5f62\u3078\u3068\u5909\u5316\u3057\u3066\u3057\u307e\u3063\u3066\u3044\u308b\u3002\u3053\u308c\u306f\u7279\u306b\u89d2\u306e\u90e8\u5206\u306e\u5024\u304c\u5927\u304d\u304f\u5909\u5316\u3059\u308b\u3068\u3053\u308d\u304c\u3001\u6b21\u7b2c\u306b\u306a\u307e\u3063\u3066\u3044\u304f\u3053\u3068\u306b\u539f\u56e0\u304c\u3042\u308b\u3053\u3068\u306f\u5bb9\u6613\u306b\u60f3\u50cf\u3067\u304d\u308b\u3002\u7a7a\u9593\u306e\u96e2\u6563\u5316\u3092\u3082\u3063\u3068\u7d30\u304b\u304f\u3059\u308b\u3068\u3001\u5c11\u3057\u306f\u6539\u5584\u3055\u308c\u308b\u90e8\u5206\u304c\u3042\u308d\u3046\u304c\u3001\u89e3\u6c7a\u3057\u306a\u3044\u3053\u3068\u3082\u60f3\u50cf\u3067\u304d\u308b\u3060\u308d\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3044\u305a\u308c\u306b\u305b\u3088\u3001\u98a8\u4e0a\u5074\u306e\u5dee\u5206\u3092\u4f7f\u3063\u3066\u89e3\u304f\u65b9\u304c\u5b89\u5b9a\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u3063\u305f\u3002\u3053\u308c\u3092\u98a8\u4e0a\u5dee\u5206\u3068\u547c\u3076\u3002\u3057\u304b\u3057\u901f\u5ea6$u$\u304c\u9006\u65b9\u5411\u3092\u5411\u304f\u3068\u3001\u5dee\u5206\u8868\u8a18\u304b\u3089\u5909\u66f4\u3057\u306a\u3044\u3068\u767a\u6563\u3057\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u304c\u3042\u308b\u306e\u306f\u3001\u90fd\u5408\u304c\u60aa\u3044\u3002\u7279\u306b\u8907\u96d1\u306a\u73fe\u8c61\u3067\u3001\u53f3\u306b\u3082\u5de6\u306b\u3082\u79fb\u52d5\u3059\u308b\u3053\u3068\u304c\u3042\u308b\u30b1\u30fc\u30b9\u306f\u3001\u3046\u307e\u304f\u89e3\u3051\u306a\u3044\u3053\u3068\u306b\u306a\u308b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5dee\u5206\u306e\u65b9\u6cd5\u3092\u3084\u308a\u306a\u304a\u3057\u3066\u3001<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">$$T_i^{n+1}=T_i^{n}-u\\frac{\\Delta t}{2\\Delta x}(T_{i+1}^n-T_{i-1})$$<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u3057\u3066\u307f\u308b\u3068\u3069\u3046\u3060\u308d\u3046\u304b\uff1f\u7d50\u679c\u306f<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-style-default\"><img loading=\"lazy\" decoding=\"async\" width=\"320\" height=\"195\" src=\"https:\/\/www.miyamoto-lab.com\/wp-content\/uploads\/2020\/10\/3.jpg\" alt=\"\" class=\"wp-image-369\" srcset=\"https:\/\/www.miyamoto-lab.com\/wp-content\/uploads\/2020\/10\/3.jpg 320w, https:\/\/www.miyamoto-lab.com\/wp-content\/uploads\/2020\/10\/3-300x183.jpg 300w\" sizes=\"auto, (max-width: 320px) 100vw, 320px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u306a\u308a\u3001\u524d\u9032\u5dee\u5206\u3088\u308a\u306f\u30de\u30b7\u3060\u304c\u3001\u632f\u52d5\u3057\u306a\u304c\u3089\u9032\u3080\u3068\u3044\u3046\u7d50\u679c\u304c\u5f97\u3089\u308c\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0a\u306e\u3088\u3046\u306b\u3001\u5c11\u3057\u5dee\u5206\u5f62\u5f0f\u3092\u5909\u3048\u308b\u3060\u3051\u3067\u3001\u5f97\u3089\u308c\u308b\u89e3\u304c\u5927\u304d\u304f\u5909\u308f\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u304c\u3042\u308b\u3002\u3053\u308c\u306f\u5dee\u5206\u6cd5\u3060\u3051\u306e\u554f\u984c\u3067\u306f\u306a\u3044\u304c\u3001\u53ce\u675f\u8a08\u7b97\u3092\u884c\u308f\u306a\u3044\u5834\u5408\u306b\u306f\u7279\u306b\u554f\u984c\u3068\u306a\u308b\u5834\u5408\u304c\u3042\u308b\u3002\u306a\u304a\u79fb\u6d41\u9805\u3092\u542b\u3080\u3053\u306e\u554f\u984c\u306f\u3001\u591a\u9805\u5f0f\u3067\u8fd1\u4f3c\u3059\u308b\u306a\u3069\u3057\u3066\u3001\u7279\u306b\u5909\u5316\u306e\u5927\u304d\u3044\u90e8\u5206\u306b\u3064\u3044\u3066\u53d6\u308a\u6271\u3046\u624b\u6cd5\uff08CIP\u6cd5\u306a\u3069\uff09\u3092\u7528\u3044\u3066\u89e3\u6c7a\u3059\u308b\u5834\u5408\u304c\u591a\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3082\u3068\u3082\u3068\u3001 \u306e\u3088\u3046\u306a\u5f62\u3092\u521d\u671f\u6761\u4ef6\u3068\u3057\u3066\u3044\u308b\u3002\u3053\u308c\u304c\u4e00\u5b9a\u901f\u5ea6\u3067\u53f3\u306b\u52d5\u3044\u3066\u884c\u3063\u3066\u3082\u3089\u3044\u305f\u3044\u3068\u8003\u3048\u3066\u3044\u308b\u308f\u3051\u3060\u304c\u3001\u5b9f\u969b\u306b\u306f \u3068\u306a\u3063\u3066\u3057\u307e\u3044\u3001\u8a08\u7b97\u304c\u5b89\u5b9a\u3057\u3066\u304f\u308c\u306a\u3044\u3002\u305d\u3053\u3067\u5dee\u5206\u306e\u65b9\u6cd5\u3092\u3084\u308a\u306a\u304a\u3057\u3066\u3001 $$T_i^{n+1}=T_ [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_locale":"ja","_original_post":"http:\/\/www.miyamoto-lab.com\/?page_id=1516","footnotes":""},"class_list":["post-1516","page","type-page","status-publish","hentry","ja"],"_links":{"self":[{"href":"https:\/\/www.miyamoto-lab.com\/wp-json\/wp\/v2\/pages\/1516","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.miyamoto-lab.com\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.miyamoto-lab.com\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.miyamoto-lab.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.miyamoto-lab.com\/wp-json\/wp\/v2\/comments?post=1516"}],"version-history":[{"count":5,"href":"https:\/\/www.miyamoto-lab.com\/wp-json\/wp\/v2\/pages\/1516\/revisions"}],"predecessor-version":[{"id":1547,"href":"https:\/\/www.miyamoto-lab.com\/wp-json\/wp\/v2\/pages\/1516\/revisions\/1547"}],"wp:attachment":[{"href":"https:\/\/www.miyamoto-lab.com\/wp-json\/wp\/v2\/media?parent=1516"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}