6 Wind and Water Tunnel Equipment
429
Fig. 6.56 European ETW wind tunnel test passage
Fig. 6.57 European ETW axial compressor rotor
effect, respectively. By the combination of total temperature, total
pressure, and fan speed, the Reynolds number per meter in the test
section can be ranged from 6.6 × 10 6 to 230 × 10 6 /m, Mach number
can be ranged from 0.15 to 1.35. The test section is 2.4 m in width,
2.0 m in height, and 9.0 m in length. In order to prevent the transonic
flow from blocking, six grooves are opened at the top and bottom
of the test section. The wind tunnel liquid nitrogen injection device
can make the wind tunnel test section run under a total temperature
429
Fig. 6.56 European ETW wind tunnel test passage
Fig. 6.57 European ETW axial compressor rotor
effect, respectively. By the combination of total temperature, total
pressure, and fan speed, the Reynolds number per meter in the test
section can be ranged from 6.6 × 10 6 to 230 × 10 6 /m, Mach number
can be ranged from 0.15 to 1.35. The test section is 2.4 m in width,
2.0 m in height, and 9.0 m in length. In order to prevent the transonic
flow from blocking, six grooves are opened at the top and bottom
of the test section. The wind tunnel liquid nitrogen injection device
can make the wind tunnel test section run under a total temperature