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COMPUTATIONAL FLUID DYNAMICS

CFD offers Project Managers an opportunity to cut down developmental time & costs by minimizing testing of a scaled-model. In a running plant, it offers the advantage of evaluating the existing gas flow distribution pattern with proposed corrective measures. It is conducted on a computer model using 3D CAD software.

The need for CFD in the Process Industry:
  • The optimum Utilization of the ESP, Bag Filter or Cyclone depends on ability to uniformly distribute the gas through the equipment.
  • The incoming gas if not distributed properly can load certain sections of the equipment leaving the other sections under-utilized.
  • The overloaded section dominates the functioning of the equipment.
  • In case of an ESP, it sparks more, clamps the operating voltage at a lower value and causes poor performance.
  • The major source of worry for designers is that the ESP shows no signs of malfunctioning while carrying out air load tests but misbehaves at the operating levels.
Benefits
  • CFD is one of the most modern, flexible and dynamic applications for measurement of Gas Distribution in the Process Industry.
  • CFD is free from scaling errors, human errors, and safety issues, requires less time & is very efficient.
  • Turbulence can be seen & analysed in the form of trajectories.
  • Helps identify causes for uneven distribution of gas by reviewing.
  • Helps correct gas distribution by introducing or modifying gas distribution devices like Turning Vanes, Ladder Vanes, Diffuser Vanes, GD Screens, Baffles.
  • With accurate as built drawings CFD can produce error free results.
  • No shut down required for conducting CFD study.
  • No wastage, CFD is the most economical technique for measurement of gas flow distribution.
  • The starting conditions are the most important & based on them an improvement of 20 to 50% can be expected.

WITHOUT HOPPER BAFFLES.

WITH HOPPER BAFFLES

TURNING VANES INSTALLED IN HOPPER AFTER CFD STUDY