Experimental Measurements and Mathematical Modeling of Static and Dynamic Characteristics of Water Flow in a Long Pipe

15th International Scientific and Engineering Conference Hermetic Sealing, Vibration Reliability and Ecological Safety of Pump and Compressor Machinery HERVICON+PUMPS-2017

机械制造;生态环境科学

Jablonska, J.^1 ; Kozubkova, M.^1

Departament of Hydromechanics and Hydraulic Equipment, VSB Technical University of Ostrava, 17. listopadu 15/2172, Ostrava

CZ-70830, Czech Republic^1

关键词: Circuit elements;    Control valves;    Hydraulic hammers;    Long pipe;    One-dimensional model;    Static and dynamic characteristics;    Time change;    Water flows;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/233/1/012013/pdf
DOI  :  10.1088/1757-899X/233/1/012013

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Static and dynamic characteristics of flow in technical practice are very important and serious problem and can be solved by experimental measurement or mathematical modeling. Unsteady flow presents time changes of the flow and water hammer can be an example of this phenomenon. Water hammer is caused by rapid changes in the water flow by means the closure or opening of the control valve. The authors deal with by hydraulic hammer at the multiphase flow (water and air), its one-dimensional modeling (Matlab SimHydraulics) and modeling with the use of the finite volume method (Ansys Fluent) in article. The circuit elements are defined by static and dynamic characteristics. The results are verified with measurements. The article evaluates different approaches, their advantages, disadvantages and specifics in solving of water hammer.