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Date of Publication:2022-10-04

Journal:系统仿真学报

Affiliation of Author(s):化工学院

Volume:21

Issue:9

Page Number:2550-2553

ISSN No.:1004-731X

Abstract:To improve the design quality of Hydraulic Manifold Block, a mathematical model of local loss was established based on distributed parameter method, the flow distribution influenced by local obstruction was simulated by CFD method, and the quantization of local resistance coefficient was achieved. The loss dispersed in upstream and downstream influence length is included by the model, and the influence of friction loss on local loss is eliminated. The right-angel diversion was taken as an example to compute the local resistance coefficient, the results are more reliable than the data in literature, and the accuracy of the model and the reliability of computation method were validated. The influences of the combination-mode of right-angel diversion and the length of technological hole on the resistance coefficient of the combination diversion were analyzed.

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