flow velocity entering the assembly.
Figure 35  Simulation of Inlet Diameter Opening (18inch)
Figure 35 shows the simulation done on the assembly with an inlet diameter of 18 inches of the
inlet funnel. The simulation results shows the maximum flow velocity achieved was 4.57 m/s
located in the turbine housing area. This maximum flow velocity achieved 3.05 times the inlet
flow velocity entering the assembly.
Table 6  Optimization of Diameter of the Inlet Funnel
Table 6 above shows the optimization of the inlet funnel data collected. The table shows five
different diameters that were tested. From the five, it is observed that the 16inch diameter tested
produced the highest flow velocity. The maximum flow velocity produced by the 16 inch
diameter is 5.91 m/s. Therefore, the optimum diameter is 16inches combined with length of
Outlet
Inlet
Volumetric Flow Reynolds Number
Maximum
Volumetric Flow Reynolds Number
Diameter (in)
Velocity (m/s)
rate(m^3/s)
Velocity (m/s)
rate(m^3/s)
1
14
1.5
0.148971999
5.072E+05
4.71
0.08591732
6.826E+05
2
15
1.5
0.171013774
5.435E+05
5.8
0.105800522
8.405E+05
3
16
1.5
0.194575672
5.797E+05
5.91
0.107807083
8.565E+05
4
17
1.5
0.219657692
6.159E+05
5.75
0.104888448
8.333E+05
5
18
1.5
0.246259835
6.521E+05
4.57
0.083363514
6.623E+05
Optimization of Diameter of the Inlet Funnel
Inlet Flow
Inside Turbine
P a g e

60
15inches for the inlet and outlet funnel. Note: This flow velocity was produced through a smooth
inlet and outlet funnel. No vortex blades were incorporated in the design.
Test 3  Optimization of Length of the Inlet Funnel
In test 3, simulations were conducted on the inlet funnel to determine the optimum length of the
inlet funnel. The simulations were conducted with different inlet funnel lengths to observe the
behavior and determine the optimum length required. This optimization would ensure the
selection of the most efficient length of the inlet funnel which produces the maximum flow
velocity. Similarly to test 1, the simulations were conducted using Solid Works 2010
CosmosFloworks.
Figure 36  Simulation of Length of Inlet Funnel (10 Inches)
Figure 36 shows the simulation conducted for funnel length of 10 inches. The diameter of the
opening of the inlet funnel is 16 inches and the diameter of the MagLev Turbine inlet is 6 inches.
From the simulation shown above, these dimensions produced a maximum flow velocity of 3.43
m/s. This is approximately 2.3 times the inlet flow velocity of 1.5m/s.
P a g e

61
Figure 37  Simulation of Length of Inlet Funnel (13 Inches)
Figure 37 shows the simulation conducted for funnel length of 13 inches. The diameter of the
opening of the inlet funnel is 16 inches and the diameter of the MagLev Turbine inlet is 6 inches.
From the simulation shown above, these dimensions produced a maximum flow velocity of 5.18
m/s. This is approximately 3.6 times the inlet flow velocity of 1.5m/s.
Figure 38  Simulation of Length of Inlet Funnel (14 Inches)
Figure 38 shows the simulation conducted for funnel length of 14 inches. The diameter of the
opening of the inlet funnel is 16 inches and the diameter of the MagLev Turbine inlet is 6 inches.
You've reached the end of your free preview.
Want to read all 174 pages?
 Fall '08
 STAFF
 Mechanical Engineering, Renewable Energy, Energy, Energy development, World energy resources and consumption