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Öù¼¸ºÎRayleigh-Taylor²»Îȶ¨ÐÔµÄÊýֵģÄâ  
Numerical simulations of Rayleigh-Taylor instability in cylindrical geometry


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¸ø³öÁËÖù¼¸ºÎÖÐÁ÷ÌåÁ¦Ñ§·½³Ì×é¼°ÆäÔÚÊýֵģÄâÖвÉÓõļÆËã·½·¨.¶Ô¶þάÖù¼¸ºÎRayleigh-Taylor²»Îȶ¨ÐÔ½øÐÐÊýֵģÄâ,ÔÚÏßÐÔ½×¶ÎÓëÏßÐÔÀíÂÛ·ûºÏµÃºÜºÃ;²»Îȶ¨ÐÔÔö³¤½øÈë·ÇÏßÐÔÇøÓòµÄãÐÖµÒÀÀµÓÚ½çÃæµÄλÖÃ,²¢ÇÒÃ÷ÏÔ²»Í¬ÓÚÆ½ÃæÇé¿ö.


¹Ø¼ü´Ê: Öù¼¸ºÎÁ÷Ìå²»Îȶ¨ÐÔ FCTËã·¨ ¸ß¾«¶È¸ñʽ
Abstract:
The fluid equations and numerical algorithm are given to simulate twoª²dimensional Rayleighª²Taylor(RT) instability in cylindrical geometry in this paper. Simulation results agree well with the linear theory of RT instability. However the threshold at which nonlinear effects begin to become apparent in cylindrical geometry is clearly different from that in planar geometry and is related to the position of interface.


Keywords: Hydrodynamic instability in cylindrical geometry FCT algorithm High-resolution scheme


ÖÐͼ·ÖÀàºÅ: O361.5 O242.1
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