Analysis and Reconstruction of Air-cooled Condenser Based on Proper Orthogonal Decomposition Technique

Based on the previous experiments and numerical simulations, the low-order model of the air-cooled condenser was obtained by the orthogonal decomposition (POD) method, and the law of POD basis function and time coefficient distribution was obtained. Get the distribution of generalized "energy" between modes; The POD-based low-order model is used to reconstruct the pressure field and velocity field of the air-cooled condenser, and the relationship between the number of modes and the error of the result is obtained. The validity and rapidity of the reduced order method are proved by selecting the previous modal reconstruction flow fields. (paper)