基于格子 Boltzmann 方法的復(fù)雜地形潰壩數(shù)值模擬

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摘要：文章通過(guò)DBM模型模擬了潰壩過(guò)程，并設(shè)計(jì)了幾種建筑物排列方式來(lái)模擬潰壩時(shí)下游建筑物對(duì)潰壩水流的影響。實(shí)驗(yàn)表明，模擬結(jié)果與實(shí)際流動(dòng)結(jié)果較符合，表明采用DBM模型能很好地模擬潰壩水流的演進(jìn)過(guò)程。

關(guān)鍵詞：淺水方程;離散Boltzmann方法;潰壩;數(shù)值模擬

中圖法分類號(hào)：TV122文獻(xiàn)標(biāo)識(shí)碼：A

Numerical simulation of dam break in complex terrain based onlattice Boltzmann method

OUYANG Jingyi

（State Key Laboratory of Hydraulics and Mountain River Engineering，Sichuan University，

Chengdu 610065，China）

Abstract：This paper simulates the dam-breaking process through the DBM model， and designs several building arrangements to simulate the influence of downstream buildings on the dam-breaking flow when the dam breaks. Experiments show that the simulation results are in good agreement with the actual flow results， indicating that the DBM model can well simulate the evolution process of the dam-breaking flow.

Key words： shallow water equation， discrete Boltzmann method， dam break， numerical simulation

1前言

潰壩是指堤壩等擋水建筑物瞬間潰決時(shí)水流突泄形成的洪水，是一種災(zāi)害性水流現(xiàn)象，其破壞力遠(yuǎn)大于一般洪水，會(huì)帶來(lái)巨大的損失，所以對(duì)潰壩進(jìn)行數(shù)值模擬十分必要。（剩余2603字）