Water entry of a wedge with rolled-up vortex sheet
نویسندگان
چکیده
منابع مشابه
Computation of Vortex Sheet Roll-up
In this article we shall review some recent developments for computing vortex sheet roll-up. A vortex sheet is an asymptotic model of a free shear layer in which the transition region between the two fluid streams is approximated by a surface across which the tangential velocity component is discontinuous. A common theme in fluid dynamics is that the vortex sheet model can be useful in understa...
متن کاملDesingularization of Periodic Vortex Sheet Roll-up*
The equations governing periodic vortex sheet roll-up from analytic initial data are desingularized. Linear stability analysis shows that this diminishes the vortex sheet model’s short wavelength instability. yielding a numerically more tractable set of equations. Computational evidence is presented which indicates that this approximation converges, beyond the critical time of singularity forma...
متن کاملVortex Sheet Computations: Roll-Up, Wakes, Separation
Chorin's vortex blob method has been proposed as a way to extend vortex sheet motion past the singularity formation time, into the physically important roll-up regime. Basic questions are: 1. Does the vortex blob method converge to an infinite spiral as the smoothing parameter tends to zero? 2. Do vortex blob computations approximate real fluid motion? This paper will present and discuss three ...
متن کاملMultiple Precision, Multiple Processor Vortex Sheet Roll-Up Computation
This paper describes a vortex sheet roll-up computation implemented using multiple precision arithmetic on a highly parallel computer (an Intel iPSC/860). Bailey: NAS Applied Research Branch, NASA Ames Research Center, Mo ett Field, CA 94035-1000; email: [email protected]. Computer time was provided by the NAS Systems Division at NASA Ames. Krasny: Dept. of Mathematics, University of Michiga...
متن کاملVanadium in Cold-rolled Sheet Steels
In hot rolled products, which are the subject of other presentations here, vanadium has been used for many years in high strength products, often in combination with other microalloying additions such as niobium or titanium. Vanadium can provide important contributions via both precipitation strengthening and ferrite grain refinement (due to austenite conditioning during thermomechanical proces...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Fluid Mechanics
سال: 2017
ISSN: 0022-1120,1469-7645
DOI: 10.1017/jfm.2017.766