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GATE Mechanical 2021 Set 1 | Question: 13

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A hot steel spherical ball is suddenly dipped into a low temperature oil bath.

Which of the following dimensionless parameters are required to determine instantaneous center temperature of the ball using a Heisler chart?

  1. Biot number and Fourier number
  2. Reynolds number and Prandtl number
  3. Biot number and Froude number
  4. Nusselt number and Grashoff number
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