Calculation of water flow discharge using the truncated triangular prisms method

Abstract The article describes the calculating method for water flow discharge. This is based on “velocity-area” proportion. In proposed method, of passing through cross section channel represented as a body, volume which consists set elements in form truncated triangular prisms. side edges prism are velocity vectors measured at corresponding points. bases these prisms areas triangles, vertices points measurement velocities. every element determined by formula prism. As reference model diagram velocities, one fourth sphere with unit radius taken, can be calculated high accuracy. There 15 speed verticals (they also taken verticals) five vertical: “surface”, 0.2h, 0.6h, 0.8h, “bottom”. value length vector directed perpendicularly from vertical, point to surface sphere. Three adjacent rate according approved procedure chosen comparison. results obtained both methods compared. result, model, radius, was 1.0472; standard 1.0279; and - 1.0124. Despite absence correction factors, only 1.55% less than method. To smooth prisms, range factors 1.03…1.07 determined, depending number verticals.