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Diffstat (limited to 'Fluid_Mechanics_With_Engineering_Applications/ch17.ipynb')
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diff --git a/Fluid_Mechanics_With_Engineering_Applications/ch17.ipynb b/Fluid_Mechanics_With_Engineering_Applications/ch17.ipynb new file mode 100644 index 00000000..b8eb3f65 --- /dev/null +++ b/Fluid_Mechanics_With_Engineering_Applications/ch17.ipynb @@ -0,0 +1,225 @@ +{ + "metadata": { + "name": "", + "signature": "sha256:8c6f5ddedf44ae20de67fc03890769a1dfcd2f9b5b396e3c44b963afe6559e1b" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter 17 : Centrifugal and Axial-Flow Pumps" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 17.1 Page No : 543" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math \n", + "\t\n", + "#Initialization of variables\n", + "Ns = 500. #minimum practical specific speed\n", + "h = 900. \t#ft\n", + "Q = 1600. \t#gpm\n", + "\t\n", + "#calculations\n", + "ne = Ns*h**(3./4) /math.sqrt(Q)\n", + "\t\n", + "#Results\n", + "print \"Minimum rotative speed = %d rpm\"%(round(ne,-1))\n", + "\n", + "#Initialization of variables\n", + "ne = 600. \n", + "gpm = 1600.\n", + "Ns = 500.\n", + "Head = 900. \t#ft\n", + "\t\n", + "#calculations\n", + "h = (ne*math.sqrt(gpm) /Ns)**(4./3)\n", + "n = Head/h\n", + "\t\n", + "#Results\n", + "print \"No. of stages = \",round(n,3)\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Minimum rotative speed = 2050 rpm\n", + "No. of stages = 5.159\n" + ] + } + ], + "prompt_number": 4 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 17.2 Page No : 543" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math \n", + "\t\n", + "#Initialization of variables\n", + "ne = 600. \n", + "gpm = 2000.\n", + "h = 150.\n", + "num = 2.\n", + "\t\n", + "#calculations\n", + "ns = ne*math.sqrt(gpm) /h**(3./4)\n", + "gpm2 = num*gpm\n", + "h2 = num**2 *h\n", + "Ns = 2*ne*math.sqrt(gpm2) /h2**(3./4)\n", + "Ne2 = Ns*(h/2)**(3./4) /math.sqrt(gpm)\n", + "\t\n", + "#Results\n", + "print \"Specific speed in case1 = %d \"%(ns)\n", + "print \"Flow rate in case 2 = %d gpm\"%(gpm2)\n", + "print \" Head in case 2 = %d ft\"%(h2)\n", + "print \" Specific speed in case 2 = %d \"%(Ns)\n", + "print \" required operating speed in case 2 = %.f rpm\"%(Ne2)\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Specific speed in case1 = 626 \n", + "Flow rate in case 2 = 4000 gpm\n", + " Head in case 2 = 600 ft\n", + " Specific speed in case 2 = 626 \n", + " required operating speed in case 2 = 357 rpm\n" + ] + } + ], + "prompt_number": 3 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 17.3 Page No : 552" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math \n", + "\t\n", + "#Initialization of variables\n", + "ne = 600./2 \n", + "gpm = 1450.\n", + "h = 140.\n", + "NPSH = 10.4\n", + "\t\n", + "#calculations\n", + "Ns = gpm*math.sqrt(ne) /h**(3./4)\n", + "sigmac = NPSH/h\n", + "zsmax = -3 \t#ft\n", + "\t\n", + "#Results\n", + "print \"Sigma C for the pump = %.4f\"%(sigmac)\n", + "print \" Position of pump = %d ft\"%(zsmax)\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Sigma C for the pump = 0.0743\n", + " Position of pump = -3 ft\n" + ] + } + ], + "prompt_number": 4 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 17.4 Page No : 557" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math \n", + "\t\n", + "#Initialization of variables\n", + "ne = 600.\n", + "gpm = 84500.\n", + "h = 225.\n", + "f = 0.95\n", + "phie = 1.1\n", + "g = 32.2\n", + "\t\n", + "#calculations\n", + "Ns = ne*math.sqrt(gpm) /h**(3./4)\n", + "u2 = phie*math.sqrt(2*g*h)\n", + "D = 153.2*phie*math.sqrt(h) /ne\n", + "D0 = 1.06*D*12 \t#in\n", + "B = 0.155*D0*12 \t#in\n", + "De = 0.6*D0\n", + "u0 = 1.06*u2\n", + "Vm2 = 0.15*u0\n", + "Area = 0.95*math.pi*D/144 *B\n", + "Q = Area*Vm2\n", + "\t\n", + "#Results\n", + "print \"Specific speed = %d \"%(round(Ns,-1))\n", + "print \" Flow rate = %d cfs\"%(Q)\n", + "print \" Eye diameter = %.1f in\"%(De)\n", + "\n", + "# rounding off error" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Specific speed = 3000 \n", + " Flow rate = 183 cfs\n", + " Eye diameter = 32.2 in\n" + ] + } + ], + "prompt_number": 5 + } + ], + "metadata": {} + } + ] +}
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