Method for calculating flow pressure loss of flexible hose
The invention discloses a method for calculating the flow pressure loss of a flexible hose. The method comprises the following steps: (1) determining the relationship between the pipe wall tensile stress and the internal pressure of the hose based on material mechanics; (2) on the basis of a Labbin...
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Main Authors | , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
08.11.2022
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a method for calculating the flow pressure loss of a flexible hose. The method comprises the following steps: (1) determining the relationship between the pipe wall tensile stress and the internal pressure of the hose based on material mechanics; (2) on the basis of a Labbin head loss theory, an iterative calculation method and a material and fluid coupling relationship, determining on-way pressure loss under the condition of considering the deformation of the hose; (3) determining local pressure loss under hose deformation based on hose deformation characteristics; (4) predicting the lowest point position of the hose in use based on the fluid momentum theorem to prevent the hose from being touched; and (5) calculating the total pressure loss of the hose. The method has the advantage that the prediction result is accurate and comprehensive.
本发明公开了一种柔性软管的流动压力损失计算方法,包括以下步骤:(1)基于材料力学确定软管管壁拉应力与内压的关系;(2)基于列宾宗水头损失理论、迭代计算方法与材料、流体耦合关系,确定考虑软管发生变形下的沿程压力损失;(3)基于软管变形特点确定软管发生变形下的局部压力损失;(4)基于流体动量定理预 |
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Bibliography: | Application Number: CN202211006190 |