Novel multi-phase transport processes using yield stress fluids

使用屈服应力流体的新型多相传输过程

• 批准号: RGPIN-2015-06398
• 负责人: Frigaard, Ian
• 金额: $ 4.15万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=638026
• 关键词: Novel; multi; phase; transport; processes

Visco-plastic fluids (with a yield stress) occur widely in industry & nature, e.g. toothpaste, wet pasta, cement and mud slurries, hair gel, paint suspensions. Fluids with yield stress may remain stationary even under an applied shear stress. As examples, consider a paint layer on a wall, fresh icing on a cupcake, yoghurt trapped in processing machinery or drilling fluid stuck in a wellbore during cementing. Although sometimes having a negative effect, the yield stress may also be exploited in novel ways leading to new flows. The first part of this project aims to develop 2 such new flow applications. The second part of the project concerns how to compute suspensions held in yield stress fluids in more efficient ways.

粘塑性流体（具有屈服应力）广泛存在于工业和自然界中，例如牙膏、湿面食、水泥和泥浆、发胶、油漆悬浮液。具有屈服应力的流体即使在施加剪切应力的情况下也可能保持静止。例如，墙壁上的油漆层、纸杯蛋糕上的新鲜糖霜、加工机械中滞留的酸奶或固井过程中滞留在井筒中的钻井液。虽然有时会产生负面影响，但屈服应力也可能以新的方式被利用，从而产生新的流动。该项目的第一部分旨在开发两个这样的新流应用程序。该项目的第二部分涉及如何以更有效的方式计算屈服应力流体中的悬浮液。