Whole-process numerical simulation method of oscillating water column type wave energy power generation device
A technology for oscillating water column and power generation devices, which is applied in CAD numerical modeling, electrical digital data processing, and special data processing applications. function and other issues to achieve the effect of solving the prediction inaccuracy
Pending Publication Date: 2021-02-05
OCEAN UNIV OF CHINA
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Problems solved by technology
In previous studies, the studies on the air chamber and the air turbine were relatively independent. For example, in the research on the air chamber, simple structures such as orifice media were mostly used to replace the damping effect of the air turbine, ignoring the real role of the air turbine. ; In the study of air turbine, the air flow is forced unilateral input, ignoring the influence of the free water surface in the air chamber
Traditional research ignores the interaction between various energy conversion processes and cannot reflect the real working state of the device. The final power generation performance prediction is mostly a simple linear superposition of each research process, resulting in inaccurate efficiency predictions, and it is difficult to accurately predict the actual sea conditions of the device. work performance requirements
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Embodiment 1
[0038] Embodiment 1. This embodiment discloses a numerical simulation method for the whole process of an oscillating water column type wave energy generating device, including the following steps:
[0039] Step 1. According to the actual size of the required simulation device, draw the three-dimensional geometric model of the oscillating water column wave energy generation device, such as figure 1 As shown, the three-dimensional geometric model is composed of wave tank 1, air chamber 2 and air turbine 3. The size of the wave tank is 60m long x 0.8m wide x 1.5m high; the size of the air chamber is 0.6m long x 0.8m wide x 1.2m high, and the height of the front wall is 0.65m; the air turbine is impact type with a diameter of 0.12 m, including 28 rotor blades and 22 groups of upstream and downstream symmetrical guide vanes.
[0040] Step 2, set the boundary conditions for the geometric model generated in step 1:
[0041] Set the boundary conditions of the side wall and bottom of...
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The invention discloses a whole-process numerical simulation method for an oscillating water column type wave energy power generation device. The method comprises the following steps: step 1, drawinga three-dimensional geometric model of the oscillating water column type wave energy power generation device; step 2, setting boundary conditions for the geometric model generated in the step 1; step3, carrying out mesh generation on the geometric model; step 4, importing the mesh file generated in the step 3 into ANSYS-Fluent software; step 5, setting a solution; step 6, generating waves by using a push plate of a dynamic grid technology; step 7, starting an air turbine to rotate, and generating a certain torque output; and step 8, setting a calculation time step length and an iteration stepnumber, and completing calculation. The whole-process numerical simulation method disclosed by the invention is based on an ANSYS-Fluent computing platform, overcomes the defect that the existing research mainly adopts a physical model test, and reduces the consumption of manpower, material resources and materials.
Description
technical field [0001] The invention belongs to the field of oscillating water column type wave energy generating devices, in particular to a numerical simulation method for the whole process of an oscillating water column type wave energy generating device in the field. Background technique [0002] The global energy crisis has intensified and accelerated the development process of marine renewable energy. Wave energy is becoming a hot spot for development due to its wide distribution of resources and high energy flow density. The oscillating water column wave energy generating device is currently the most widely used wave energy generating device due to its relatively simple structure and principle, and convenient equipment installation and maintenance. [0003] The oscillating water column wave energy generating device mainly includes an energy capture mechanism (air chamber), an energy transfer mechanism (air turbine) and an energy conversion mechanism (generator), so as...
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IPC IPC(8): G06F30/23G06F30/28G06F30/10G06F111/10G06F113/08G06F119/14
CPCG06F30/23G06F30/28G06F30/10G06F2111/10G06F2113/08G06F2119/14
Inventor 刘臻许传礼史宏达曲娜崔莹张晓霞
Owner OCEAN UNIV OF CHINA