On the Analytical Approach to Present Engineering Problems: Photovoltaic Systems Behavior, Wind Speed Sensors Performance, and High-Speed Train Pressure Wave Effects in Tunnels

<div>Cup anemometer with damaged rotor, that is, with one cup missing (a). Calibration curves of the anemometer equipped with damaged and nondamaged rotors (b). The rotation frequency measured by the anemometer at “flag” position is also included in the graph.</div>

Mathematical Problems in Engineering

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Figure 6

Figure 6: On the Analytical Approach to Present Engineering Problems: Photovoltaic Systems Behavior, Wind Speed Sensors Performance, and High-Speed Train Pressure Wave Effects in Tunnels 

Figure 6 | On the Analytical Approach to Present Engineering Problems: Photovoltaic Systems Behavior, Wind Speed Sensors Performance, and High-Speed Train Pressure Wave Effects in Tunnels 