The symbol * stands for a complex conjugate. In wavelet analysis, there are many wavelet basis functions, such as Morlet wavelet, Marr wavelet, Harr wavelet, spline wavelet, Daubechies wavelet and so on. Through comparison, the Morlet wavelet was found to have better time and frequency ...
Test Rig Based on the schematic diagram and the picture of the high-speed pump test rig displayed in Figure 5, the experimental test was performed on the prototype pump with six blades in the impeller and seven blades in the stay vane to verify the numerical results. The experimental system...
Figure 7. Schematic diagram of intelligent test system for pump parameters. The comparison between the test and simulated values of the dimensionless param- eter (head coefficient ψ) at full flow is shown in Figure 8. The calculation method of ψ is shown in Formula (1). Figure 8. ...
2.1. Symbol Description 𝜌ρ: Density (kg/m3)Density (kg/m3) ∂∂: Partial DerivativePartial Derivative 𝑈U: Velocity (m/s)Velocity m/s 𝑡t: Time (s)Time s ∇∇: Particularly in vector calculusParticularly in vector calculus 𝑃P: Pressure (kPa)Pressure kPa 𝑔g: Gravity Ve...