Transport Phenomena of Non-Newtonian Fluids-1 — Lesson 1

This lesson covers the fundamental aspects of transport phenomena of non-Newtonian fluids. It delves into the continuum hypothesis, transport mechanisms, and the importance of understanding these concepts in chemical engineering. The lesson also explains the different levels of transport phenomena, including macroscopic, microscopic, and molecular levels. It further discusses the constitutive equations of transport by molecular mechanisms, such as heat conduction (Fourier's law), species diffusion (Fick's law), and stress and momentum flux. The lesson concludes with an explanation of the analogy of molecular transport mechanisms for momentum transfer, energy transfer, and species concentration change.

Video Highlights

01:37 - Discussion on the concept of Continuum Hypothesis and Transport Mechanisms in the context of non-Newtonian fluids.
14:10 - Discussion on the concept of constitutive equations of transport by molecular mechanisms.
25:40 - Explanation of the continuum hypothesis and its application in transport phenomena.
44:29 - Discussion on the concept of stress and momentum flux in the context of transport phenomena.
56:19 - Conclusion and references for further reading.

Key Takeaways

• Understanding transport phenomena of non-Newtonian fluids is crucial in chemical engineering as it aids in designing and controlling unit operations or processes.
• Transport phenomena occur at different levels - macroscopic, microscopic, and molecular, each having its unique characteristics and importance.
• The continuum hypothesis assumes that physical properties are distributed throughout the space and every point in space should have finite values for such properties.
• Constitutive equations describe how a material will respond to stress, providing a qualitative statement of that response.
• The analogy of molecular transport mechanisms for momentum transfer, energy transfer, and species concentration change provides a comparison of intrinsic rates of different transport processes.