Heat and Mass Transfer in Metallurgy — Winter 2021

Define viscosity and state Newton’s law of viscosity.

What is kinematic viscosity? Derive unit for dynamic and kinematic viscosity.

Derive differential mass balance equation.

If fluid is passing with velocity of 2 m/sec through a pipe of 10 cm diameter, calculates its flow rate.

What are different types of fluids as per Newton’s law of viscosity?

From differential momentum balance equation derive Bernoulli’s equation.

Explain different types of fluid flows.

Calculate specific weight, density and specific gravity of one liter of liquid weighs 7N.

Explain Fourier’s law of heat conduction and get unit for conductivity.

Derive differential momentum balance equation in rectangular system.

For temperature difference of 250 0C over thickness of 25 cm refractory material having thermal conductivity 0.15 W/mK. Calculate heat flux.

Explain term: White body, gray body, black body and emissivity.

Derive general heat conduction equation for rectangular coordinate system.

What is Newton’s law of cooling? Derive unit for co-efficient of convective heat transfer.

Explain different modes of convective heat transfer. Differentiate between them.

Derive Hagen-Posiseulle equation.

Explain Stefan-Boltzmann law.

What is thermal resistance and derive its unit.

Explain any one flow rate measuring equipment.

What is mass transfer? Briefly explain different modes of mass transfer.

Explain kirkindall effect.

Explain plank’s law and Wien’s distribution law.

Derive units of diffusivity.

Explain fick’s law of diffusion.

Derive general mass diffusion equation in stationary media.