Honors College Thesis
 

Fluid dynamic analysis of fluid flow in a raceway tank for cultivation of macrophytic red algae, Gracilaria vermiculophylla

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https://ir.library.oregonstate.edu/concern/honors_college_theses/rf55zh46d

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  • As new cost-effective cultivation methods are needed for macrophytic red algae, this experiment expands upon a previously studied land-based approach. The experiment aimed to determine how the fluid dynamics of a previously researched land-based method affected the growth of the macrophytic red alga, Gracilaria Vermiculophylla. A clonal culture of G. Vermiculophylla was cut, immobilized into ten mesh panels, and grown for 42 days with the fluid velocity measured six times during the growing period. Velocity measurements were taken in six different locations around the raceway tank, with five different cross-sectional measurements at each location. This gave the view of a three-dimensional flow around the tank to compare with the growth of the samples measured in % per day. The samples that experienced more flow had a moderately positive correlation between the velocity and growth rate. Additionally, this experiment found that the bulk velocity of the tank decreased with the growth of G. Vermiculophylla. Overall, these findings can be used to improve the design of cost-effective land-based methods for growing macrophytic red alga.
  • Keywords: Gracilaria vermiculophylla, macrophytic red alga, fluid mechanics experiment
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