In the course of calculation , implicit difference scheme and finite volume formulation are used to solve the temperature field , and an advanced model is adopted in the calculation of the ablation 在計算中,采用了隱式差分格式及控制容積法等計算技術(shù),并采用了先進(jìn)的燒蝕模型。
In the paper , river and the downstream area of dike are regarded as a whole system , and hydraulic model of coupling 1 - d river and gradual dike - break is established , therein the preissmann implicit difference scheme is applied to main river , and the fvm ( finite volume method ) is applied to the breach and polder 本文將河道與堤壩下游區(qū)域視為一個整體,對于單一河道采用preissmann四點(diǎn)隱式差分格式計算,對于潰口及圩區(qū)采用有限體積法,建立了一維河道與堤壩漸潰耦聯(lián)的水力模型,也是一維、二維耦合的水流模型。