利用修正的Keller-Miksis方程与Noble-Abel-Stiffend-Gas状态方程相结合的模型,研究了超声作用下具有传质传热及扩散效应的双气泡间的相互作用,并与Mettin等[Mettin R,Akhatov I,Parlitz U,Ohl C D,Lauterborn W 1997 Phys.Rev.E 562924...利用修正的Keller-Miksis方程与Noble-Abel-Stiffend-Gas状态方程相结合的模型,研究了超声作用下具有传质传热及扩散效应的双气泡间的相互作用,并与Mettin等[Mettin R,Akhatov I,Parlitz U,Ohl C D,Lauterborn W 1997 Phys.Rev.E 562924]给出的没有传质传热及扩散效应的双气泡间的相互作用进行了比较.结果表明,具有传质传热及扩散效应的双气泡间的次Bjerknes力和气泡归一化最大半径都大于没有传质传热及扩散效应的双气泡的相应量.随着其中一个气泡的初始半径的增大和驱动声压的增大,两种情况给出的次Bjerknes力的差别逐渐增大,而随着驱动频率的增大,两种情况给出的次Bjerknes力的差别逐渐减小.由此可见,传质传热和扩散效应对空化气泡间相互作用的次Bjerknes力具有重要影响.展开更多
In this study, dynamic linkage of atmosphere-ocean coupling between the North Pacific and the tropical Pacific was demonstrated using a large number of ensemble perturbed initial condition experiments in a fully coupl...In this study, dynamic linkage of atmosphere-ocean coupling between the North Pacific and the tropical Pacific was demonstrated using a large number of ensemble perturbed initial condition experiments in a fully coupled fast ocean-atmosphere model （FOAM）. In the FOAM model, an idealized mixed layer warming was initiated in the Kuroshio-Oyashio extension region, while the ocean and atmosphere remained fully coupled both locally and elsewhere. The modeling results show that the warm anomalies are associated with anomalous cyclonic winds, which induce initial warming anomalies extending downstream in the following winter. Then, the downstream warming spreads southwestward and induces SST warming in the equatorial Pacific via surface wind-evaporation-SST feedback. Warming in the tropical Pacific is further reinforced by Bjerknes＇ feedback.展开更多
文摘利用修正的Keller-Miksis方程与Noble-Abel-Stiffend-Gas状态方程相结合的模型,研究了超声作用下具有传质传热及扩散效应的双气泡间的相互作用,并与Mettin等[Mettin R,Akhatov I,Parlitz U,Ohl C D,Lauterborn W 1997 Phys.Rev.E 562924]给出的没有传质传热及扩散效应的双气泡间的相互作用进行了比较.结果表明,具有传质传热及扩散效应的双气泡间的次Bjerknes力和气泡归一化最大半径都大于没有传质传热及扩散效应的双气泡的相应量.随着其中一个气泡的初始半径的增大和驱动声压的增大,两种情况给出的次Bjerknes力的差别逐渐增大,而随着驱动频率的增大,两种情况给出的次Bjerknes力的差别逐渐减小.由此可见,传质传热和扩散效应对空化气泡间相互作用的次Bjerknes力具有重要影响.
基金supported by the National Basic Research Program of China (Grant Nos.2012CB955603 and 2013CB956201)by the National Natural Science Foundation of China (NSFC) (Grant Nos.40830106,40906003,41130859,and 41276002)
文摘In this study, dynamic linkage of atmosphere-ocean coupling between the North Pacific and the tropical Pacific was demonstrated using a large number of ensemble perturbed initial condition experiments in a fully coupled fast ocean-atmosphere model （FOAM）. In the FOAM model, an idealized mixed layer warming was initiated in the Kuroshio-Oyashio extension region, while the ocean and atmosphere remained fully coupled both locally and elsewhere. The modeling results show that the warm anomalies are associated with anomalous cyclonic winds, which induce initial warming anomalies extending downstream in the following winter. Then, the downstream warming spreads southwestward and induces SST warming in the equatorial Pacific via surface wind-evaporation-SST feedback. Warming in the tropical Pacific is further reinforced by Bjerknes＇ feedback.
