Discussion Overview
The discussion revolves around calculating the yield pressure for a Bingham plastic in a tube, exploring the engineering of liquids with specific yield stresses, and identifying suitable materials for such applications. It encompasses theoretical and practical aspects related to fluid mechanics and material science.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
Main Points Raised
- Participants inquire about the calculation of yield pressure for Bingham plastics, specifically how to determine the pressure difference required for flow based on tube dimensions and yield stress.
- Some participants express uncertainty regarding the availability of tailored liquids with specific yield stresses, noting difficulties in finding suppliers or formulations that meet their criteria.
- There is mention of the potential for engineering liquids with specific yield stresses, with suggestions to explore Bingham plastics and dilatant fluids as possible avenues.
- One participant highlights the challenge of finding non-suspension liquids that exhibit the desired yield stress range of 150 Pa to 250 Pa while maintaining low viscosity.
- Another participant suggests that most Bingham plastics are typically suspensions and mentions drilling mud as an example, indicating a need for materials that can form gels.
Areas of Agreement / Disagreement
Participants generally agree on the complexity of calculating yield pressure and the challenges associated with finding suitable materials. However, there is no consensus on the feasibility of engineering specific yield stresses or the types of materials that could be used.
Contextual Notes
Participants note limitations in available information regarding tailored liquids, with references to general knowledge and specific examples like ketchup and drilling mud. There is an acknowledgment of the need for further exploration into chemical formulations and supplier catalogs.