Simulation Study of Ice Breaking by High Pressure Jet
Ice cover of wind turbine in wind power generation technology has become a major hidden danger that restricts the safe operation of wind turbines.In order to study the impact of continuous high-pressure jet on ice crushing,the process is simplified to be an elongated cylinder,which impacts and crushes a finite amount of ice,and a finite element model of high-pressure jet crushing ice is established based on the SPH method,which is used to observe the degree of fragmentation of ice when the jet impacts the ice to fail and crushes the ice.The time-dependent stress wave evolution and the corresponding ice sheet destruction effect diagram are simulated.The effects of different jet speeds,jet angles and nozzle calibres on the degree of jet ice fragmentation are analysed,and a jet speed of 80 m/s,a jet angle of 75° and a nozzle calibre of 2 mm are selected to meet the requirements of an efficient and energy-saving de-icing method.
high-pressure jetSPHnumerical simulationstress wavedegree of ice fragmentation
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