Plunger pumps are needed for heavy duty sludge pumping at wastewater treatment
facilities. America's leading pump manufacturer Wastecorp Inc. brought
their plunger pump problem to us in late 2009. It was found that when the
ow rate reaches a critical value, the plunger pump starts to generate a clicking
noise.
A one-dimensional model was built for studying the
ow of a typical plunger
pump operation. The velocities and pressures are calculated at certain interesting
locations. Pressure jumps have been found while opening or closing the
valves. The valve motion is then modeled with considerations to its geometry.
The results show that as the plunger speed reaches a critical value, the valve
moves more rapidly and more likely to hit the wall and generates a noise. We
also provide a methodology to study the
ow across the valve in higher resolution.
A nite-di erence approach to the Navier-Stokes equations are presented
with the immersed boundary method. / UOIT
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:OOSHDU.10155/223 |
| Date | 01 December 2011 |
| Creators | Chen, Tian |
| Contributors | Bohun, C. Sean |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Thesis |
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