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fluid moving at 2 mls backwards. Thc resolution ofthe automatic meshing is controlled
through settings in CosmosFloWorks. The resolution level can be set to various levels
with finer and finer granularity. The software does not pennit detailed configuration of
the mesh around particular geometric features. A higher level of resolution breaks the
simulation domain into more small elements and can provide much more accurate results
but it also requires significantly more computational effort. Detcnnination ofthe exact
flows, stresses and deflections in areas such as the trailing edge ofthe blades (where there
arc very fine geometric features) would benefit from an ability to adjust the mesh size
locally. The simulation settings and assumptions are provided in the following lists:
• Analysis type is external for propeller simulation. (ie. Fuild flows outside of
propeller)
Water is used as the fluid domain.
• The only considered physical features arc gravity and rotation, acceleration of
gravity g=9.81 mls 2
The temperature of water is 293.2 K.
The air pressure is 101325 Pa.
Pressure potential is considered.
Assume no cavitation is in the simulation
Assume adiabatic waJl is used.
The simulation structure is shown in Figure 27. This simulation model providcs the watcr
domain, which scrves the same function as the tow·tank in the real experiment.
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