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GATE 2026 MT – Question 29

Transport Phenomena and Rate Processes · Fluid flow and momentum transfer · 1 mark · Multiple choice

Ergun equation is NOT applied in which one of the following unit operations to analyze gas flow behavior:

  1. Blast Furnace
  2. Sintering
  3. Roasting
  4. LD Converter

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Show answer and explanation

Correct answer: (D) LD Converter

Explanation

The Ergun equation describes pressure drop as gas flows through a packed bed of particles, combining viscous and inertial terms. Blast furnaces, sinter beds and suitable roasting beds have this geometry. An LD converter instead involves gas jets and a molten bath, so **D** is outside the packed-bed model.