Show simple item record

dc.contributor.authorLaabs, Shawn
dc.contributor.authorCornella, Barry Michael
dc.contributor.authorHammerland, Sean Sawyer
dc.date2009-07-13
dc.date.accessioned2007-01-03T05:34:40Z
dc.date.available2007-01-03T05:34:40Z
dc.description.abstractThe objective of this design project was to develop a working on demand droplet generator for use in ambient conditions as well as in a vacuum environment. The primary design parameters set by this project include the droplet size, speed, consistency as well as the overall generator size and cost. Several different concept designs for a generator were considered. For the purposes of this project the use of a piezoelectric design was used and modified to fit the design specifications that were given. This design features an actuating piezoelectric disk that deflects with voltage potential. This deflection drives the droplet generator system. By adjusting the size of the sapphire nozzle diameter and regulating the voltage and pulse width it is possible to vary the initial velocity and size of the droplets produced. Initial testing in atmospheric condition proved successful. The generator produced an average droplet size of 1.57 mm with a percent standard deviation of 4.15% (through 15 drops). However, testing in vacuum down to 10-6 torr gave way to a problem of air out-gassing in vacuum. Small, trapped air pockets from the priming process began to rapidly expand in the generator, explosively forcing the fluid out of the generator. It was found that the primary issue was in the priming process of the generator. Several different approaches were taken to solve this problem. The out-gassing problem has proven to be a substantial technical challenge in this project and due to time constraints no current solution exists. However, there is no fundamental reason the design proposed in this project cannot work and future work will be done to alleviate these out-gassing issues.
dc.identifierURJ22_Cornella.pdf
dc.identifierCUCSUR22100004
dc.identifier.urihttp://hdl.handle.net/10976/62
dc.languageEnglish
dc.publisherUniversity of Colorado Colorado Springs. Kraemer Family Library
dc.rightsAuthors who publish with this journal agree to the following terms:
dc.rights1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal. No commercial gain may be made off the work without the author's knowledge and agreement.
dc.rights2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
dc.rights3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
dc.sourceURJ-UCCS: Undergraduate Research Journal at UCCS; Vol 2, No 2: Mechanical and Aerospace Engineering Papers
dc.titleOn-Demand Droplet Generation
dc.typeArticle


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record