Project ForgeFluid Mechanics
Mechanical Operations
GATE 2011
Medium
On further increasing V̄0 (same packed bed as above, particle density ρp=2500kg/m³, g=9.8m/s²), incipient fluidisation is achieved. Assuming porosity remains unaltered (ε=0.5), the pressure drop per unit length (in Pa/m) under incipient fluidisation condition is
- A3675
- 7350
- C14700
- D73501
Explanation
At incipient fluidization, ΔP/L=(1−ε)(ρp−ρf)g=(0.5)(2500−1000)(9.8)=0.5×1500×9.8=7350 Pa/m.
Source: GATE CH 2011 (2011)
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