کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
759255 896471 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Asymptotic bubble evolutions of the Rayleigh–Taylor instability
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Asymptotic bubble evolutions of the Rayleigh–Taylor instability
چکیده انگلیسی

We examine the multiple harmonic model for the single-mode Rayleigh–Taylor instability, and present a new class of the asymptotic solution for the bubble evolution. Previously reported solutions for the bubble curvature and velocity from the model were quantitatively different from other theoretical models and numerical results, for small density jumps. The discrepancy between the theoretical models is resolved by our new approach to the model. Our solution agrees with the Layzer–Goncharov model, and gives the independence of the bubble curvature on the density ratio.


► We study the multiple harmonic model for the single-mode Rayleigh–Taylor instability, applying a new approach.
► We present a new class of the asymptotic solution for the bubble evolution.
► A discrepancy between theoretical models is resolved by our new approach to the model.
► We find a physical behavior that the velocity fields have small gradients near behind the bubble tip at the nonlinear stage.
► Our solution agrees with numerical results, and gives the independence of the bubble curvature on the density ratio.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Communications in Nonlinear Science and Numerical Simulation - Volume 17, Issue 11, November 2012, Pages 4017–4022
نویسندگان
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