{ "metadata": { "name": "", "signature": "sha256:38873375f358fa0dcf49ba785f6ed30d427f72b9198eb1e335390fde0490d638" }, "nbformat": 3, "nbformat_minor": 0, "worksheets": [ { "cells": [ { "cell_type": "code", "collapsed": false, "input": [ "%pylab inline\n", "import pylab as pl\n", "import math\n", "import numpy as np\n", "import matplotlib.pyplot as plt\n", "import csv\n", "# number of the grid points \n", "\n", "ymax = 31;\n", "\n", "# material properties \n", "\n", "rho = 1000.0;\n", "mu = 0.00102;\n", "nu = mu / rho ; \n", "\n", "#dimensions of the computational domain\n", "l = 0.5 ;\n", "h = 1 ;\n", "w = 1.0 ;\n", "\n", "# define Reynolds number\n", "\n", "Re = 2000 ;\n", "\n", "# compute the average velocity\n", "\n", "ua = (Re*nu)/(2.0*h);\n", "\n", "# compute the pressure drop\n", "\n", "dp = (12.0*mu*l*ua)/(h*h);\n", "\n", "# compute the volume flow rate \n", "\n", "Q = (w*dp*h*h*h)/(12.0*mu*l);\n", "\n", "# create the grid \n", "\n", "dy = h/(ymax-1.0)\n", "\n", "y = np.zeros(ymax)\n", "\n", "y[0] = 0.0\n", "\n", "for i in range(1,ymax):\n", " y[i] = y[i-1]+dy\n", " \n", "# compute the analytical solution\n", "u =np.zeros(ymax)\n", "\n", "#define the boundary conditions...define them inside the loop\n", "u[0] = 0.0\n", "u[ymax-1] = 0.0\n", "const = dp/(2.0*mu*l )\n", "\n", "for j in range(1,ymax-1):\n", " u[j] = const * y[j]*(h-y[j])\n", " \n", "\n", "print ua\n", "\n", "plt.plot(u,y,'x')\n", "plt.ylabel('Position [m]')\n", "plt.xlabel('Velocity [m/s]')\n", "plt.title('1D laminar velocity profile in a channel ')\n", "plt.show()\n", "\n", "\n", " \n", "\n", "\n", "\n", "\n", "\n", "\n", "\n", "\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "Populating the interactive namespace from numpy and matplotlib\n", "0.00102\n" ] }, { "metadata": {}, "output_type": "display_data", "png": 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HAGiajizLlUWpyaO0tNTGxsamVCAQOMra7ujoKGAorr8geQCApuqIW6+3RCVm\nmNfU1Bi98cYbL3V0dMT37t3rde/evV5jx45N6oyuLCQPANBkAsHfZbmOjh13XJW4MeKQIUN+r6+v\n1xcKhbZjxoz55cCBA7Pnzp27j6mgAAC0gbqU5coiV/KgKIplaGhYe/z48clLliz59ujRo1Pv3r3b\nh+ngAAA0leQYh6Pj32W56pJA5EoehBBy7dq1QYcOHZo5bty4s4QQ0tTUJPe+AADwKnW59XpLWp3n\nQdu5c+eqrVu3rps0adKJ3r17Z+bn5zsNHz78ItPBAQBoKlnluByO6s3naIlCt2SvqqoyZrFY1Jtv\nvlktT/vk5OSAVatW7RSLxTrz58//MSIiIkpWuxs3bgwYNGjQtSNHjkybPHny8VcCxIA5AKgppudy\ntEYlBszv3Lnj0bdv3/TevXtnuru7Z/n4+KS1NeYhFot1li1btjs5OTkgKyvLPTY2NjQ7O9tNVruI\niIiogICAZCZfKABAZ/P3f3Ucgx7n8PdXblwdQa7ksXDhwj1ffPHF6qKiIvuioiL7zz///N8LFy7c\n09o+qampvs7OznmOjo4CPT29xpCQkLiEhIQJ0u2+/vrr5f/617/+z9LS8ml7XwQAgCqSvD+VQKC6\n96lqD7nGPGpraw0lxzh4PB6/pqbGqLV9hEKhrZ2dXTG9zuVyS1JSUvyk2yQkJEy4cOHCiBs3bgxo\n6W+EREZG/vV/Ho9HeDyePGEDAChdZ91inc/nEz6fz8zBZZAreXTv3r1g06ZN62fPnn2AoijWoUOH\nZvbo0eNBa/vI88eiVq1atXPbtm1r/zeuwWqp20oyeQAAqBPpuRxMXXlI/2K9cePGjn8SCXIlj5iY\nmLBPP/30P/Rg9pAhQ37/6aef5rW2j62trbC4uNiOXi8uLrbjcrklkm3S0tJ8QkJC4ggh5NmzZxZJ\nSUlj9fT0GoODg08p/lIAAFSLOt1iXVGtVlvV1dUZfP/994vz8vKcPT09b8+bN+8neW9JIhKJdHv1\n6nXv/PnzI21sbEp9fX1TY2NjQ93c3LJltQ8LC4sJCgo6jWorANAUWlttNWfOnJ/T0tJ8PDw87iQl\nJY394IMPdsh7YF1dXdHu3buXjRkz5hd3d/es6dOnx7u5uWVHR0cvio6OXvT6oQMAKMfZs/+cCV5e\n3vy4pHHj/nmFoU5zOVrT6pWHh4fHnTt37ngQ0nwlMWDAgBvp6el9Oy06gisPAFA9TN9OvSMo9cpD\nV1dXJOv6iyb5AAASdUlEQVT/AADaTJNLcOXV6pWHjo6O2NDQsJZer6urMzAwMKgjpPmKoLKy0oTx\nAHHlAQAqiqnbqXcEpq88Wq22EovFOkw9MQCAOuusElxVhTvjAgAoSN1vp94RFLoxojKg2woAVI0y\nS3DlpRJ/hlaZkDwAgEnqkAjaQyXuqgsAoKk0+c63TMKVBwBoPTphrFmjOYPf6LZC8gCATqDKZbft\ngW4rAACGSZfdalPVVHsheQCAVkPZbfug2woAtBqqrdp5fFX/YkbyAABQHMY8AADaIO8t0qHjIHkA\ngNrDXI3Oh24rANAImjhX43VgzAPJAwDkpGlzNV4HxjwAAOSAuRqdC8kDANQe5mp0PnRbAYDa09S5\nGq8DYx5IHgAaCV/4zMKYBwBoJJTXqjdceQCA0qC8ljnotkLyANBoKK9lBrqtAEBjobxWfSF5AIBS\noLxWvaHbCgCUAtVWzMKYB5IHAIDCMOYBAEqHW56DNCQPAGgT5mSANHRbAYBcMCdDvWDMA8kDQGVg\nTob6wJgHAKgEzMkASUgeANAmzMkAaei2AoA2YU6G+lHrbqvk5OQAV1fXHBcXl9yoqKgI6e2HDh2a\n6eXlleHp6Xnb39//yu3btz2ZjAdAUzFdSjtu3D8HxzkcJA6tRlEUI4tIJNJxcnLKKygocGxoaNDz\n8vL6Mysry02yzdWrVweVl5ebUhRFkpKSAvz8/K5LH6c5RABoTVkZRS1Z0vyvrHXQPv/77mTsO56x\nK4/U1FRfZ2fnPEdHR4Genl5jSEhIXEJCwgTJNoMGDbpmampaQQghfn5+KSUlJVym4gHQZBzO3+MQ\nAsHf4xMopQWm6DJ1YKFQaGtnZ1dMr3O53JKUlBS/ltrv3bs3PDAwMFHWtsjIyL/+z+PxCI/H68BI\nATQDh9M8B4MupUXi0C58Pp/w+fxOez7GkgeLxZJ7lPvixYvDf/rpp3lXrlyROV9VMnkAgGzSpbS4\n8tAu0r9Yb9y4kdHnY6zbytbWVlhcXGxHrxcXF9txudwS6Xa3b9/2XLBgwQ+nTp0KNjMzK2MqHgBN\nhlJa6GyMleqKRCLdXr163Tt//vxIGxubUl9f39TY2NhQNze3bLpNUVGR/YgRIy4cPHhw1sCBA6/L\nDBClugBtQiktSFPr25MkJSWNXbVq1U6xWKwTHh6+d926dVujo6MXEULIokWLoufPn//jiRMnJtnb\n2xcRQoienl5jamqq7ysBInkAAChMrZNHR0DyAHWFqwFQJrWeJAigzXAbc9BkuPIAYBBuYw7Kgm4r\nJA9Qc7iNOSgDuq0A1BhuYw6aCskDgCGYewGaDN1WAAxBtRUoE8Y8kDzgNeFLHLQRxjwAXhNKZgE6\nHq48QCugZBa0DbqtkDygg6BkFrQJuq0AOgBKZgE6FpIHaDyUzAJ0PHRbgcZDtRVoI4x5IHmoNXxx\nAygHxjxAraFMFkAz4coDGIcyWYDOh24rJA+NgDJZgM6FbitQeyiTBdA8SB7AKJTJAmgmdFsBo1Bt\nBaAcGPNA8gAAUBjGPEBhZ8/+s1uovLz5cQCAjoDkoYEwtwIAmIZuKw2FuRUA2g1jHkge7Ya5FQDa\nC2Me0C6YWwEATELy0ECYWwEATEO3lQbC3AoAwJiHiiYPfEEDgCrDmIeKQjksAGgzXHm8BpTDAoCq\nQreVCicPQlAOCwCqCd1WKgzlsACgrZA82gnlsACgzdBt1U6otgIAVYZuKxU1btyriYPP5xMOR/UT\nB5/PV3YIbVKHGAlBnB0NcaoXRpNHcnJygKura46Li0tuVFRUhKw2K1as2OXi4pLr5eWVkZ6e3rel\nY6n6LcXV5QdKHeJUhxgJQZwdDXGqF8aSh1gs1lm2bNnu5OTkgKysLPfY2NjQ7OxsN8k2iYmJgXl5\nec65ubkue/bsWfjee+99J+tYmEMBAKBaGEseqampvs7OznmOjo4CPT29xpCQkLiEhIQJkm1OnToV\nPGfOnJ8JIcTPzy+lvLyc8/jxYyvpY9ED05hDAQCgIiiKYmQ5evTov+bPn/8DvX7gwIFZy5Yt+1qy\nzfjx409fuXJlML0+cuTI327evOkj2YYQQmHBggULFsUXpr7fKYoiuoQhLBaLkqeddDWA9H5MVgsA\nAED7MNZtZWtrKywuLraj14uLi+24XG5Ja21KSkq4tra2QqZiAgCAjsFY8ujfv//N3NxcF4FA4NjQ\n0NAlPj5+enBw8CnJNsHBwaf279//LiGEXL9+fSCHwym3srJ6zFRMAADQMRjrttLV1RXt3r172Zgx\nY34Ri8U64eHhe93c3LKjo6MXEULIokWLogMDAxMTExMDnZ2d84yMjGpiYmLCmIoHAAA6EJMDKhRF\nkaSkpIBevXrlODs7527bti1CVpvly5fvcnZ2zvX09My4detW37b2ff78edd33nnnVxcXl/ujRo06\nV1ZWxqG3bdmyZZ2zs3Nur169cn755ZfRqhjnuXPnRvn4+Nz08PC47ePjc/PChQvDVTFOeiksLLQ3\nMjKq3rFjx79VNc6MjAzPgQMHXuvdu/ddDw+P2y9fvtRXtTjr6ureCAkJifXw8Ljt5uaWtXXr1rXK\nfD+PHDky1d3dPZPNZovT0tL6SR5Llc4jyTglC2raex519nupSudQa3Eqeg7J9SLau4hEIh0nJ6e8\ngoICx4aGBj0vL68/s7Ky3CTbnD17NnDs2LGJFEWR69ev+/n5+V1va981a9Z8FhUV9SFFUWTbtm0R\nERER2yiKIpmZme5eXl5/NjQ06BUUFDg6OTnlicVitqrFmZ6e7v3w4cNuFEWRu3fv9ra1tS1RxfeT\nXqZMmfJ/06ZNi5f3B7+z42xsbNT19PTMuH37tgdFUeTFixdmqvi5x8TEzA0JCYmlKIrU1tYaODo6\nFhQWFtorK87s7GzXe/fu9eTxeBclv0hU7TxqKc72nEedHaOqnUMtxdmec4jRGebtnevx6NGjbq3t\nK7nPnDlzfj558uREQghJSEiYEBoaGqunp9fo6OgocHZ2zktNTfVVtTi9vb3/7Nat2yNCCHF3d8+q\nq6szaGxs1FO1OAkh5OTJkxN79OjxwN3dPaut+JQV57lz50Z7enre9vDwuEMIIWZmZmVsNrtJ1eK0\ntrZ+WFNTYyQWi3VqamqMunTp0mBiYlKprDhdXV1zevbseV/6+VTtPGopzvacR50dIyGqdQ61FGd7\nziFGk4dQKLS1s7Mrpte5XG6JUCi0ladNaWmpTUv7Pn782IoeWLeysnpMTywsLS21kazokvV8qhCn\npGPHjk3x8fFJ09PTa1S1OKurq9/87LPPPoyMjIxsKzZlxnn//v2eLBaLCggISPbx8Unbvn37GlWM\nc8yYMb+YmJhUWltbP3R0dBSsWbNmO4fDafM+zEzF2RJVO4/kIe951Nkxqto51JLc3FwXRc8hxgbM\nCWn/XI+W2sg6HovFolp7HnliUFacmZmZvdeuXbvt119/HSXP83d2nJGRkZHvv//+l4aGhrXyHFNZ\ncYpEIt0//vjj7Zs3b/Y3MDCoGzly5HkfH5+0ESNGXFClOA8ePDirrq7O4OHDh9YvXrzoOmTIkN9H\njhx5vnv37gWdFWd7dfZ5pAh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