Discussion Overview
The discussion centers on the differences in pressure definitions and behaviors between viscous and non-viscous fluids, particularly in the context of fluid dynamics and rheology. Participants explore the implications of viscosity on pressure orientation and the foundational principles governing fluid behavior.
Discussion Character
- Technical explanation
- Conceptual clarification
- Debate/contested
Main Points Raised
- One participant references Hc Verma's definition of pressure for non-viscous fluids and questions why this definition does not apply to viscous fluids, specifically regarding the dependence of pressure on orientation.
- Another participant introduces the constitutive equation for Newtonian fluids, highlighting its role in fluid dynamics and stating that it encompasses both shear and normal stresses, suggesting a more complex behavior in viscous fluids.
- A later reply acknowledges a lack of familiarity with the constitutive equation, indicating a gap in understanding among some participants regarding advanced fluid dynamics concepts.
- Another participant suggests consulting "Transport Phenomena" by Bird et al. for further study on the topic.
Areas of Agreement / Disagreement
Participants express differing levels of familiarity with advanced fluid dynamics concepts, and there is no consensus on the implications of viscosity on pressure orientation. The discussion remains unresolved regarding the specific effects of viscosity on pressure definitions.
Contextual Notes
Some participants may lack foundational knowledge of rheological equations, which could limit their understanding of the discussion. The conversation also reflects varying levels of expertise in fluid dynamics.
Who May Find This Useful
This discussion may be useful for students and professionals interested in fluid dynamics, particularly those exploring the differences between viscous and non-viscous fluids and the underlying principles of rheology.