A High-Precision Kriging Method for Predicting Flow Field Distribution Based on Measured Values
A technology of flow field distribution and test method, applied in the field of testing, can solve the problems of large amount of calculation and sacrifice of accuracy, and achieve the effect of improving calculation speed, improving control accuracy and reducing test workload.
Active Publication Date: 2020-03-03
ZHEJIANG ZHENENG TECHN RES INST
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Problems solved by technology
It has a large amount of calculation, and in order to obtain a faster speed, it is often necessary to sacrifice the accuracy requirements
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[0045] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0046] Such as figure 1 Shown, the present invention comprises the following steps:
[0047] The actual measurement points of the measured cross-section are arranged in SO1 intersection;
[0048] SO2 is measured by constant potential electrolysis method, non-dispersive infrared absorption method or ultraviolet fluorescence method to measure O at the actual measurement point. 2 , NOx, SO 2 concentration;
[0049] SO3 Input the measured value of the measured point to generate a standard format file 1;
[0050] S04 calls the generated standard format file 1, applies the kriging method to grid the data, and outputs the gridded file 2;
[0051]S05 calls the kriging method to generate file 2, and uses file 2 to draw an isomap;
[0052] S06 reads the value of the prediction point on the contour map;
[0053] S07 calculates the area v...
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The invention discloses a high-precision Kriging testing method based on measured value prediction flow field distribution, and relates to the field of testing. Currently, a grid method is usually employed for boiler flow field testing, and is large in calculation burden. The method comprises the following steps: carrying out the crossed arrangement of actual measurement points of a reactor inlet or outlet according to a boiler flue plane to be measured; measuring the parameter value of each actual measurement point; calculating and obtaining a prediction value based on the positions of the measurement points and the parameter measurement value of the actual measurement points through employing the Kriging method; obtaining the value of a prediction point of an unknown region on a contour diagram according to the obtained prediction value contour diagram; calculating a region value according to the value of the prediction point, feeding back and outputting the region value. According to the technical scheme of the invention, the method can greatly reduce the testing workload of a conventional grid method, and is higher in accuracy.
Description
technical field [0001] The invention relates to a test method, in particular to a high-precision Kriging test method for predicting flow field distribution based on measured values. Background technique [0002] At present, in the boiler flow field test, such as boiler furnace and tail flue flow field, including flow velocity, component concentration, dust concentration, etc., the grid method is usually used in the test process. The accuracy of grid method measurement depends on the size of the grid. The smaller the grid, the more measurement points and the higher the accuracy. That is to say, in order to obtain better measurement accuracy when using the grid method, the measured grid must be sufficient many. It has a large amount of calculation, and in order to obtain a faster speed, it is often necessary to sacrifice the accuracy requirement. Contents of the invention [0003] The technical problem to be solved and the technical task proposed by the present invention a...
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IPC IPC(8): G01M9/00
CPCG01M9/00
Inventor 王洁刘春红童小忠陈彪祁志福
Owner ZHEJIANG ZHENENG TECHN RES INST