第三问.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "ename": "KeyboardInterrupt",
     "evalue": "",
     "output_type": "error",
     "traceback": [
      "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[1;31mKeyboardInterrupt\u001b[0m                         Traceback (most recent call last)",
      "\u001b[1;32m<ipython-input-9-d29ed9e9baaf>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m()\u001b[0m\n\u001b[0;32m     20\u001b[0m         \u001b[1;32mfor\u001b[0m \u001b[0mi\u001b[0m \u001b[1;32min\u001b[0m \u001b[0mrange\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;36m0\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;36m1800\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m     21\u001b[0m             \u001b[0mx1\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mi\u001b[0m\u001b[1;33m+\u001b[0m\u001b[1;36m1\u001b[0m\u001b[1;33m]\u001b[0m \u001b[1;33m=\u001b[0m \u001b[1;36m44.112\u001b[0m \u001b[1;33m+\u001b[0m \u001b[1;33m(\u001b[0m\u001b[1;36m0.4486\u001b[0m \u001b[1;33m-\u001b[0m \u001b[0mB\u001b[0m\u001b[1;33m)\u001b[0m \u001b[1;33m*\u001b[0m \u001b[0mx1\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mi\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m+\u001b[0m \u001b[0mB\u001b[0m \u001b[1;33m*\u001b[0m \u001b[0mx2\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mi\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m---> 22\u001b[1;33m             \u001b[0mx2\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mi\u001b[0m\u001b[1;33m+\u001b[0m\u001b[1;36m1\u001b[0m\u001b[1;33m]\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mB\u001b[0m \u001b[1;33m*\u001b[0m \u001b[0mx1\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mi\u001b[0m\u001b[1;33m]\u001b[0m \u001b[1;33m+\u001b[0m \u001b[1;33m(\u001b[0m\u001b[1;36m0.9729\u001b[0m \u001b[1;33m-\u001b[0m \u001b[0mB\u001b[0m\u001b[1;33m)\u001b[0m \u001b[1;33m*\u001b[0m \u001b[0mx2\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mi\u001b[0m\u001b[1;33m]\u001b[0m \u001b[1;33m+\u001b[0m \u001b[1;36m0.0271\u001b[0m \u001b[1;33m*\u001b[0m \u001b[0mx3\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mi\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m     23\u001b[0m             \u001b[0mx3\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mi\u001b[0m\u001b[1;33m+\u001b[0m\u001b[1;36m1\u001b[0m\u001b[1;33m]\u001b[0m \u001b[1;33m=\u001b[0m \u001b[1;36m0.0271\u001b[0m \u001b[1;33m*\u001b[0m \u001b[0mx2\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mi\u001b[0m\u001b[1;33m]\u001b[0m \u001b[1;33m+\u001b[0m \u001b[1;33m(\u001b[0m\u001b[1;36m0.9729\u001b[0m \u001b[1;33m-\u001b[0m \u001b[0mD\u001b[0m\u001b[1;33m)\u001b[0m \u001b[1;33m*\u001b[0m \u001b[0mx3\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mi\u001b[0m\u001b[1;33m]\u001b[0m \u001b[1;33m+\u001b[0m \u001b[0mD\u001b[0m \u001b[1;33m*\u001b[0m \u001b[0mx4\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mi\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m     24\u001b[0m             \u001b[0mx4\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mi\u001b[0m\u001b[1;33m+\u001b[0m\u001b[1;36m1\u001b[0m\u001b[1;33m]\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mD\u001b[0m \u001b[1;33m*\u001b[0m \u001b[0mx3\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mi\u001b[0m\u001b[1;33m]\u001b[0m \u001b[1;33m+\u001b[0m \u001b[1;33m(\u001b[0m\u001b[1;36m0.9887\u001b[0m \u001b[1;33m-\u001b[0m \u001b[0mD\u001b[0m\u001b[1;33m)\u001b[0m \u001b[1;33m*\u001b[0m \u001b[0mx4\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mi\u001b[0m\u001b[1;33m]\u001b[0m \u001b[1;33m+\u001b[0m \u001b[1;36m0.4181\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n",
      "\u001b[1;31mKeyboardInterrupt\u001b[0m: "
     ]
    }
   ],
   "source": [
    "import numpy\n",
    "import math\n",
    "from __future__ import division\n",
    "x1 = 2000 * [0]\n",
    "x2 = 2000 * [0]\n",
    "x3 = 2000 * [0]\n",
    "x4 = 2500 * [0]\n",
    "x1[0] = 37\n",
    "x2[0] = 37\n",
    "x3[0] = 37\n",
    "x4[0] = 37\n",
    "flag = 0\n",
    "\n",
    "fw = open('data.txt','w') \n",
    "\n",
    "\n",
    "\n",
    "for B in numpy.arange(0.0003, 0.5678,0.0001):\n",
    "    for D in numpy.linspace(0.576,0.999, num = 1000):\n",
    "        for i in range(0, 1800):\n",
    "            x1[i+1] = 44.112 + (0.4486 - B) * x1[i]+ B * x2[i]\n",
    "            x2[i+1] = B * x1[i] + (0.9729 - B) * x2[i] + 0.0271 * x3[i]\n",
    "            x3[i+1] = 0.0271 * x2[i] + (0.9729 - D) * x3[i] + D * x4[i]\n",
    "            x4[i+1] = D * x3[i] + (0.9887 - D) * x4[i] + 0.4181\n",
    "        \n",
    "        for i in range(0, 1800):\n",
    "            if x4[i] > 47:\n",
    "                flag = 1\n",
    "            if x4[i] > 44 and x4[i+300] > 44: \n",
    "                flag = 1\n",
    "            \n",
    "        if flag == 0:\n",
    "            hb = math.sqrt(0.2044/B)\n",
    "            hd = math.sqrt(23.61/D)\n",
    "            print >>fw,\"30min温度 = \",x4[1800],\"25min温度 =\",x4[1500],\"B = \",B, \"D = \",D,\"hb = \",hb,\"hd = \",hd,\"hb + hd = \",hb + hd\n",
    "            #print \"30min温度 = \",x4[1800],\"25min温度 =\",x4[1500],\"B = \",B, \"D = \",D,\"hb = \",hb,\"hd = \",hd,\"hb + hd = \",hb + hd\n",
    "        flag = 0\n",
    "        \n",
    "\n",
    "fw.close()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "t[] = numpy.arange(1.1,6.1,0.2)\n",
    "t[]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 2",
   "language": "python",
   "name": "python2"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 2
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython2",
   "version": "2.7.14"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2
}