{ "metadata": { "name": "", "signature": "sha256:779dd4cf4a63ec7ae3b3ee56b532415f0e7430caa393646786820e5bcc3483bb" }, "nbformat": 3, "nbformat_minor": 0, "worksheets": [ { "cells": [ { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "Chapter 6 : Dimensional Analysis and Dynamic Similitude" ] }, { "cell_type": "heading", "level": 3, "metadata": {}, "source": [ "Example 6.2 Page no 233" ] }, { "cell_type": "code", "collapsed": false, "input": [ "\n", "\n", "L = 10 # length scale lp/l\n", "\n", "\n", "rhop = 0.86*998.2 # density inn kg/m**3\n", "\n", "mup = 8*10**-3 # viscosity in Ns/m**2\n", "\n", "Vp = 2.5 # Velocity in m/s\n", "\n", "\n", "rhom = 998.2 # density in kg/m**3\n", "\n", "mum = 1.005*10**-3 # viscosity in Ns/m**2\n", "\n", "\n", "Vm = Vp*L*(rhop/rhom)*(mum/mup) # velocity in m/s\n", "\n", "print \"Hence the model should be tested at a velocity of \",round(Vm,2),\"m/s. This velocity in the model is called corresponding velocity\"" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "Hence the model should be tested at a velocity of 2.7 m/s. This velocity in the model is called corresponding velocity\n" ] } ], "prompt_number": 3 }, { "cell_type": "heading", "level": 3, "metadata": {}, "source": [ "Example 6.3 Page no 233" ] }, { "cell_type": "code", "collapsed": false, "input": [ "\n", "\n", "from __future__ import division\n", "\n", "from math import *\n", "\n", "l = 300 # length in ft\n", "\n", "Q = 100000 # discharge in cfs\n", "\n", "Cd = 3.8 # coefficient of discharge\n", "\n", "L = (1/50) # length scale\n", "\n", "\n", "Qm = 100000*(L)**(5/2) # model discharge in cfs\n", "\n", "print \"Maximum discharge, Qm = \",round(Qm,8),\"cfs\"\n", "\n", "H = (Q/(Cd*l))**(2/3) # height over spill way\n", "\n", "h = H*L*12 # head over spill model\n", "\n", "print \"Maximum head over crest = \",round(h,2),\"ft\"" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "Maximum discharge, Qm = 5.65685425 cfs\n", "Maximum head over crest = 4.74 ft\n" ] } ], "prompt_number": 1 }, { "cell_type": "code", "collapsed": false, "input": [], "language": "python", "metadata": {}, "outputs": [] } ], "metadata": {} } ] }