Establishment method for internal pressure distribution model of 90-degree curved pipe for crude oil transmission
A technology of distribution model and establishment method, applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve problems such as explosion, fire, cracking of elbows, etc., to ensure transportation safety, less undetermined coefficients, and reduce the pressure inside the pipe. Effect
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[0089] 1) Under different crude oil flow parameters and elbow geometric parameters, FLUENT software is used to numerically simulate the flow process of crude oil in the elbow, and a database of uneven internal pressure distribution in various working conditions of the elbow is obtained. The flow of the crude oil Parameters include crude oil density ρ, elbow outlet pressure P 0 and the flow velocity v at the inlet of the elbow; the geometric parameters of the elbow include the inner diameter of the elbow d, the bending radius R of the elbow, the bending degree of the elbow k=R / d, and the pressure acting position, wherein the pressure acting position includes the axial angle of the elbow α and the elbow circumferential angle β; among them, the elbow outlet pressure P 0 They are 2MPa, 4MPa, 6MPa, 8MPa, 10MPa, 12MPa respectively, the inlet flow velocity v of the elbow is 0.5m / s, 1.0m / s, 1.5m / s, 2.0m / s, 2.5m / s respectively, the bending degree of the elbow k are 1.0, 1.5, 2.0, 2.5,...
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