WATER QUALITY PREDICTION METHOD AND SYSTEM BASED ON WATER QUALITY MODEL

摘要

#$%^&*AU2020101392A420200820.pdf#####ABSTRACT The present invention discloses a water quality prediction method and system based on a water quality model. The method includes: building a one-dimensional water quality model for a river network or a river reach of a to-be-predicted water quality region by means of a lattice Boltzmann 5 method (LBM); building a two-dimensional water quality model for a key area in the to-be-predicted water quality region by means of the LBM, where a lattice at the boundary of the two-dimensional water quality model is as wide as a river cross section at the boundary of the one-dimensional water quality model; coupling the boundaries of the one-dimensional water quality model and the twodimensional water quality model according to conservation of mass and conservation of momentum 0 of solute particles to obtain a coupled water quality model, namely a model obtained in such a manner that the one-dimensional water quality model is coupled with the two-dimensional water quality model; and predicting the water quality of the to-be-predicted water quality region by means of the coupled model to obtain a prediction result of parameters of the to-be-predicted water quality region. The method and system of the present invention improve the calculation accuracy and calculation 5 efficiency of the models, thus improving water quality prediction accuracy and efficiency. 22DRAWINGS 100 Build a one-dimensional water quality model for a river network or a river reach of a to-be-predicted water quality region by means of an LBM 1F 200 Build a two-dimensional water quality model for a key area in the to-be-predicted water quality region by means of the LBM 300 Couple boundaries of the one-dimensional water quality model and the two-dimensional water quality model according to conservation of mass and conservation of momentum of solute particles to obtain a coupled water quality model 400 Predict the water quality of the to-be-predicted water quality region by means of the coupled model to obtain a prediction result of parameters of the to-be-predicted water quality region FIG. 1 1/3