Practice Dimensionless Parameters (5) - Convection Heat Transfer - Heat Transfer & Thermal Machines
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Dimensionless Parameters

Practice - Dimensionless Parameters

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Define Reynolds Number and its significance.

💡 Hint: Think about fluid flow characteristics.

Question 2 Easy

What does the Prandtl Number signify?

💡 Hint: Consider how this affects thermal boundary layer thickness.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

Which of the following expresses the Reynolds Number?

Re = ρuL/μ
Re = hL/k
Re = Gr × Pr

💡 Hint: Consider the forces involved in fluid motion.

Question 2

True or False: The Nusselt Number indicates only conductive heat transfer.

True
False

💡 Hint: Think about the types of heat transfer.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Calculate the Reynolds Number for water flowing through a pipe with a diameter of 0.03 m, a velocity of 2 m/s, and a dynamic viscosity of 0.001 Pa.s at a temp of 20°C.

💡 Hint: Use the parameters given to apply the Reynolds formula.

Challenge 2 Hard

For a vertical plate heated from below, determine the Rayleigh Number if Ts=80°C, T∞=20°C, and the fluid has Pr=0.71 and L=0.5 m.

💡 Hint: Break the problem into Grashof and Rayleigh calculations step-by-step.

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Reference links

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