Wind Turbine Blade Leading Edge Discrete Slot Of Film-forming Characteristic Research

The economic society high speed development, and the environment question daily aggravation, urges the demand and use of energy more and more diversified. The development and utilization of wind power is paid attention to by people day by day. Under extreme climate conditions in cold north or some high elevation areas the wind turbine leaf blade surface can form frost or ice, which weakens the aerodynamic characteristics of wind turbine seriously, even causes the wind turbine forced to stop. As the matter stands can reduce the year power generating capacity of wind turbine, and damage the wind-driven generator movement heavily. Therefore, the research is of great importance to make the wind turbine leaf blade prevented from, ice and deice. This research based on the air film cooling principle of gas turbine and the high temperature steam guard against the ice thought on the airplane wing, proposes one new method to guard against ice and deice-gas film heating.This research mainly adopted the numerical simulation method. First, conducted the value simulator study to the two-dimensional wind turbine with no hole, the value analogue result with based on the bidirectional multi-stream tube theoretical model, used the computed result contrast which the MATLAB software compilation procedure obtained, the evidence value simulation feasibility, and determined the best apex transmission ratio. Under this apex transmission ratio condition, studied the different width seam hole wing section aerodynamic properties under the different injection velocity. It discovered that the high injection velocity can weaken the wing section lift-drag ratio seriously. But when the seam hole width was 3mm and the injection velocity was not higher than 35m/s, the sews hole wing section lift-drag ratio had no big difference with the non. And it made the deep level contrast analysis to the two-dimensional flow field and the temperature field to inquire into the jet flow burble reason and the air film heating mechanism. Next, conducted the non-stable state value simulator study in the two-dimensional analysis foundation to the three dimensional wind wheel. It mainly conducted the analysis research to a body seam and the availability of air film heating nearby the separate seam three dimensional revolving territory leading edge, discovered the separate seam under the similar injection velocity, consumed less current capacities. But air film protection effect equaled with a body seam. Therefore seeking the best jet flow seam hole and the seam pitch of holes was highly pursued in this research. There was not that much excessive research analysis on this aspect, just proposed one method. And I hope it will have a further thorough research in the future.