An Efficient Catheter Design Method
A design method and duct technology, applied in ship construction, ship propulsion, ships, etc., can solve the problems of no design method and high efficiency of azimuth thrusters, and achieve the effect of fast design method and high calculation efficiency
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[0042] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0043] Such as figure 1 As shown, the catheter line type is divided into the inner surface of the catheter and the outer surface of the catheter, wherein the inner surface of the catheter is divided into the inlet section of the catheter, the middle section of the catheter, and the outlet section of the catheter. In order to finely express the catheter line type, P0(x0,y0), P1(x1,y1), P2(x2,y2), P3(x3,y3), P4(x4,y4), P5(x5,y5 ) and P6(x6,y6) seven control points. The inner surface of the catheter is controlled by a total of five points P0, P6, P1, P2, and P3, while the outer surface of the catheter is controlled by three points P0, P5, and P4. The slopes of the control points P1, P2, P3, P4, P5, and P6 are k1, k2, k3, k4, k5, and k6, respectively.
[0044] The duct inlet area coefficient Ain, the duct exit area coefficient Aout, the guide...
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