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   "source": [
    "# Chapter 12 : Gas liquid flow"
   ]
  },
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   "metadata": {},
   "source": [
    "### Example 12.1 page no : 421"
   ]
  },
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     "text": [
      "Eta = 0.740741\n",
      "\n",
      "The slip velocity is 19.864286 ft/s\n"
     ]
    }
   ],
   "source": [
    "#Calculate the eta and slip velocity\n",
    "\n",
    "# variables\n",
    "ratio_Q=10.                          #dimentionless (ratio of Qg to Ql)\n",
    "Vl=2.06                              #ft/s\n",
    "\n",
    "# calculation\n",
    "x=3.5/ratio_Q                        #dimentionless\n",
    "eta=1.0/(1+x)                        #dimentionless\n",
    "Vl_avg=Vl/(1-eta)                    #ft/s\n",
    "Vg_avg=ratio_Q*Vl/eta                #ft/s\n",
    "V_slip=Vg_avg-Vl_avg                 #ft/s\n",
    "\n",
    "# result\n",
    "print \"Eta = %f\\n\"%eta\n",
    "print \"The slip velocity is %f ft/s\"%V_slip"
   ]
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