Source code for pyleecan.Methods.Slot.SlotW23.comp_surface_active

# -*- coding: utf-8 -*-

from numpy import arcsin, sin, sqrt


[docs]def comp_surface_active(self): """Compute the Slot inner surface for winding (by analytical computation) Parameters ---------- self : SlotW23 A SlotW23 object Returns ------- Swind: float Slot inner surface for winding [m**2] """ Rbo = self.get_Rbo() # By Pythagore # self.H2 projection H2 = sqrt(self.H2 ** 2 - ((self.W2 - self.W1) / 2.0) ** 2) S2 = 0.5 * (self.W1 + self.W2) * H2 if self.is_outwards(): Rslot = Rbo + self.comp_height() # External radius of the slot alpha = float(2 * arcsin(self.W2 / (2 * Rslot))) # W2 in rad S3 = (Rslot ** 2.0) / 2.0 * (alpha - sin(alpha)) return S2 + S3 else: Rslot = Rbo - self.comp_height() # External radius of the slot alpha = float(2 * arcsin(self.W2 / (2 * Rslot))) # W2 in rad S3 = (Rslot ** 2.0) / 2.0 * (alpha - sin(alpha)) return S2 - S3