(39a) The Ergun Equation: Right or Wrong?
- Conference: AIChE Spring Meeting and Global Congress on Process Safety
- Year: 2017
- Proceeding: 2017 Spring Meeting and 13th Global Congress on Process Safety
- Group: Process Development Division
- Time: Monday, March 27, 2017 - 3:30pm-4:00pm
- presented in most engineering texts concerned with such flow;
- taught as âthe gospelâ in most top-tier engineering schools.
Thus, future engineers leave university with the Ergun equation well-represented in their intellectual toolkit.
Unfortunately, the Ergun equation rests upon shallow foundations laid in shifting sands. Basically, the Ergun equation is nothing more than the addition of the Blake-Kozeny and Burke-Plummer equations, both of which contain a plethora of questionable assumptions.
This presentation reports an experimental test of the Ergun equation and discusses the theoretical foundations of the Ergun equation.
This presentation also contains a ânew lookâ at fluid flow through packed beds and demonstrates how to scale packed beds from laboratory-sized equipment to commercial-sized equipment.