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In this simulation, two nose cones are added to the propeller in order to reduce the inflow
lorcc on the propeller. As introduced in chapter 3, the inflow force on the propeller is the
main error between tbe simulation and experimental testing results. Thus, deceasing the
inflow force is a way to increase the accuracy of the simulation results. In order to fast
simulation, designers can use two nose cones simulation method to predict propeller
thrust without using the no-blade method that is introduced in Chapter 3. [t is only a
method for rapid simulation, however; the simulation method as introduced in Chapter 3
is preferred. The rotation direction of the propeller is shown in Figure 51. The propeller is
set to be immovable, and the fluid moves at I m/s in the direction shown in Figure 51 to
simulate the ship motion. When the propeller is rotating, water will create force on
pressure faces, and provide thrust lor ship movement.
The settings of this simulation are listed as below:
The simulation tank is 1mx Imx 1Om (widthxdepthxlength)
The propeller is immovable, and the fluid moves at 1 mts backwards.
The propeller is operated at 900 rpm.
The depth of propeller center in water is 0.5 m.
The temperature of water is 293.2 K.
The air pressure is 101325 Pa.
Gravity feature is considered, g-'-'9.81 m/s 2
The roughness of the propeller surface is 0.3 micrometer.
Pressure potential is considered.
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