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diff --git a/Chemical_Reaction_Engineering_by_O._Levenspiel/ch13.ipynb b/Chemical_Reaction_Engineering_by_O._Levenspiel/ch13.ipynb new file mode 100755 index 00000000..205d7e7f --- /dev/null +++ b/Chemical_Reaction_Engineering_by_O._Levenspiel/ch13.ipynb @@ -0,0 +1,174 @@ +{ + "metadata": { + "name": "" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter 13 : The Dispersion ,Wodel" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 13.1 page no : 305" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "import math \n", + "\n", + "# Variables\n", + "T = [0,5,10,15,20,25,30,35]; # time\n", + "Cpulse = [0,3,5,5,4,2,1,0]; # gm/liter \n", + "sum1 = 0;\n", + "sum2 = 0\n", + "sum3 = 0;\n", + "\n", + "# Calculations\n", + "for i in range(8):\n", + " sum1 = sum1+Cpulse[i];\n", + " sum2 = sum2+Cpulse[i]*T[i];\n", + " sum3 = sum3+Cpulse[i]*T[i]*T[i];\n", + "\n", + "t = sum2/sum1;\n", + "sigma_sqr = (sum3/sum1)-((sum2/sum1))**2;\n", + "sigmatheta_sqr = sigma_sqr/t**2;\n", + "m = 0.1\n", + "\n", + "while m <= 0.2:\n", + " sigmat_sqr = 2*m-2*(m**2)*(1-math.exp(-(1./m)));\n", + " if sigmat_sqr >= sigmatheta_sqr:\n", + " break;\n", + " m += 0.001\n", + "\n", + "# Results\n", + "print \" The vessel print ersion number is %.3f\"%(m)\n", + "\n", + "# answer may vary because of rounding error." + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " The vessel print ersion number is 0.100\n" + ] + } + ], + "prompt_number": 1 + }, + { + "cell_type": "heading", + "level": 3, + "metadata": {}, + "source": [ + "Example 13.2 pageno : 306" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "# Variables\n", + "l = 1219.; # long diameter\n", + "u = 0.0067; #Velocity(mm/s) \n", + "\n", + "#Using the probability graph\n", + "t1 = 178550.\n", + "#84th percentile point fall at\n", + "t2 = 187750.;\n", + "\n", + "# Calculations\n", + "sigma = (t2-t1)/2;\n", + "t = l/u;\n", + "sigma_theta = sigma/t;\n", + "#Vessel print ersion number\n", + "d = sigma_theta**2/2;\n", + "\n", + "# Results\n", + "print \" The vessel print ersion number is %.5f\"%(d)\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " The vessel print ersion number is 0.00032\n" + ] + } + ], + "prompt_number": 3 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 13.3 page no : 308" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "# Variables\n", + "v = 0.4; # bed voidage\n", + "u = 1.2; # velocity of fluid\n", + "l = 90. #length(cm)\n", + "sigma1_sqr = 39. # output signals\n", + "sigma2_sqr = 64. # output signals \n", + "\n", + "# Calculations\n", + "dsigma_sqr = sigma2_sqr-sigma1_sqr;\n", + "t = l*v/u;\n", + "sigmatheta_sqr = dsigma_sqr/t**2;\n", + "d = sigmatheta_sqr/2;\n", + "\n", + "# Results\n", + "print \" The vessel print ersion number is %.4f\"%(d)\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " The vessel print ersion number is 0.0139\n" + ] + } + ], + "prompt_number": 5 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [], + "language": "python", + "metadata": {}, + "outputs": [] + } + ], + "metadata": {} + } + ] +}
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