<p>This work utilized Pointwise and
Fluent to generate a two-dimensional axisymmetric model a Mk 48 torpedo, with
the intention of informing methods to reduce the turbulence, and therefore
hydrodynamic noise, of the torpedo’s wake. However, this work was unable to
gather data on the unsteady nature of the turbulence expected around the
torpedo due to Fluent providing unrealistic results when run using a transient
solver. This work shows that the transient solver computed boundary layers
greater than one order of magnitude smaller than expected, and in some cases
there was no change in boundary layer thickness over the torpedo’s body. The
work does contain steady state solutions that were validated by first
performing a grid convergence study for a flat plate. The steady state results
for the flat plate and torpedo both showed the expected growth for a turbulent
boundary layer. Additionally, there was a high level of convergence with the
Log-Law showing that the steady state data is valid. Future work should use a
transient solver to determine the characteristics of the turbulence to resolve
unsteady flow from vortex shedding, wake characteristics, and any broadband or
narrowband noise to develop solutions to reduce the noise made by the
Mk 48.</p>
| Identifer | oai:union.ndltd.org:purdue.edu/oai:figshare.com:article/17214542 |
| Date | 18 December 2021 |
| Creators | Austen Suqi (11845943) |
| Source Sets | Purdue University |
| Detected Language | English |
| Type | Text, Thesis |
| Rights | CC BY 4.0 |
| Relation | https://figshare.com/articles/thesis/Reynolds-Averaged_Navier-Stokes_Simulation_around_Mk_48_ADCAP_Torpedoes/17214542 |
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