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Icing simulation method and device for blade of wind driven generator
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A technology for wind turbines and simulation methods, which is applied in design optimization/simulation, electrical digital data processing, computer-aided design, etc., can solve problems such as reducing workload and failing to fully reflect the icing state of blades in a three-dimensional flow field.
Pending Publication Date: 2022-07-01
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology
In most previous studies, the icing model is suitable for two-dimensional or quasi-three-dimensional environments. The two-dimensional model is based on a single airfoil to discuss the icing situation, and the quasi-three-dimensional model is based on the superposition of individual airfoil icing conditions to form a complete blade icing , the two models can reduce the workload, but they cannot fully reflect the icing state of the blade in the three-dimensional flow field
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Embodiment 1
[0028] like figure 1 As shown, a wind turbine blade icing simulation method includes:
[0029] S1: Establish a state description model for describing the icing state of wind turbine blades;
[0030] S2: Perform discrete processing on the state description model, and perform solution processing on the state description model after the discrete processing to obtain a solution result, and perform accelerated processing in the process of discrete processing and solution processing;
[0031] S3: Divide the preset icing time to obtain a plurality of icing time nodes, and perform iterative processing on the solution results in turn according to the order of the divided icing nodes to express the icing process of the multi-field coupled blade, wherein the multiple Field coupled blades are wind turbine blades under different physical fields.
[0032] In the above embodiment, a state description model is established, discrete processing and solution processing are performed on the sta...
Embodiment 2
[0093] like image 3 As shown, a wind turbine blade icing simulation device includes:
[0094] The model building module is used to establish a state description model for describing the icing state of the wind turbine blades;
[0095] a solving module, configured to perform discrete processing on the state description model, and perform solution processing on the state description model after the discrete processing to obtain a solution result, and perform accelerated processing in the process of discrete processing and solution processing;
[0096] The expression module is used to divide the preset icing time to obtain multiple icing time nodes. In the order of the divided icing nodes, the solution results are iteratively processed to express the icing process of the multi-field coupled blade, wherein, The multi-field coupling blades are wind turbine blades under different physical fields.
Embodiment 3
[0098] A wind turbine blade icing simulation device, comprising a memory, a processor, and a computer program stored in the memory and running on the processor, when the processor executes the computer program, it realizes the following: A wind turbine blade icing simulation method according to any one of the above.
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Abstract
The invention relates to a wind driven generator blade icingsimulation method and device. The method comprises the following steps: establishing a state description model for describing the icing state of a wind driven generator blade; carrying out discrete processing on the state description model, carrying out solving processing on the state description model after discrete processing to obtain a solving result, and carrying out acceleration processing in the discrete processing and solving processing processes; segmenting the preset icing time to obtain a plurality of icing time nodes, and sequentially carrying out iterative processing on solving results according to the sequence of the segmented icing nodes to express the icing process of the multi-field coupling blade; according to the method, the potential flow model is expanded, the three-dimensional unsteady-state blade icing process under multiple working conditions can be truly and effectively simulated, and the accuracy of blade icing simulation is improved.
Description
technical field [0001] The invention relates to the technical field of wind power generation, in particular to a method and device for icing simulation of wind turbine blades. Background technique [0002] The phenomenon of blade icing occurs when the ambient temperature drops to or below the freezing point, and the phase transition of water droplets on the blade surface is prone to occur in low temperature and humid environments such as mountains or near lakes. The icing of the blade will change the flow state of the boundary layer, separate the boundary layer, increase the flow resistance and flow loss, and lead to the damage of the wind turbine blade structure in severe icing. For the entire wind turbine, icing will reduce the output of some wind turbines, and the actual output power of the wind turbine will be unstable. Serious icing will lead to the shutdown of the unit and waste of wind energy resources. The research of wind turbines suitable for cold climate conditio...
Claims
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