Example 6.5. An open circuit wind tunnel draws in air from the atmosphere through a well contoured nozzle. In the test section, where the flow is straight and nearly uniform, a static pressure tap is drilled into the tunnel wall. A manometer connected to the tap shows that the static pressure within the tunnel is 45 mm of water below atmosphere. Assume that air is incompressible and at 25°C, pressure is 100 kPa (absolute). Calculate the velocity 1,-25°C in the wind tunnel section (Refer to Fig. 6.6). Density of Po-100 kPa water is 999 kg/m and characteristic gas constant for V-0 air is 287 J/kg K. O Test section (GATE)
Example 6.5. An open circuit wind tunnel draws in air from the atmosphere through a well contoured nozzle. In the test section, where the flow is straight and nearly uniform, a static pressure tap is drilled into the tunnel wall. A manometer connected to the tap shows that the static pressure within the tunnel is 45 mm of water below atmosphere. Assume that air is incompressible and at 25°C, pressure is 100 kPa (absolute). Calculate the velocity 1,-25°C in the wind tunnel section (Refer to Fig. 6.6). Density of Po-100 kPa water is 999 kg/m and characteristic gas constant for V-0 air is 287 J/kg K. O Test section (GATE)
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter11: Calibrating Instruments
Section: Chapter Questions
Problem 7RQ: Accuracy of a thermometer is more important in the ______temperature ranges.
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