FALL VELOCITY OF SPHERES IN VERTICALLY OSCILLATING FLUID

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Crystal Spheres in Velocity Space ?

In a collaborative programme involving Dr. B.N.G. Guthrie and the author at the Royal Observatory, Edinburgh, the claim that extragalactic redshifts are periodic, in the sense described by Tifft, is being subjected to a rigorous statistical scrutiny. The current status of this programme is discussed. First, the methodological approach and the analytical techniques are described. The latter are ...

متن کامل

Vertically shaken column of spheres. Onset of fluidization

The onset of surface fluidization of granular material in a vertically vibrated container, z = A cos (ωt), is studied experimentally. Recently, for a column of spheres it has been theoretically found [1] that the particles lose contact if a certain condition for the acceleration amplitude z̈ ≡ Aω/g = f(ω) holds. This result is in disagreement with other findings where the criterion z̈ = z̈crit = c...

متن کامل

Internal wave excitation by a vertically oscillating elliptical cylinder

Laboratory experiments are performed to measure the amplitude of internal waves generated by an elliptical cylinder oscillating vertically with different frequencies and amplitudes in a uniformly stratified fluid. The experimental results are compared with the theoretical predictions of Hurley and Keady ~1997!. Though in qualitatively good agreement with experiments, the theory underestimates t...

متن کامل

Internal wave excitation by a vertically oscillating sphere

The properties of waves generated by a vertically oscillating sphere in a uniformly stratified fluid are examined both theoretically and experimentally. Existing predictions for the wave amplitude and phase structure are modified to account for the effects of viscous attenuation. As with waves generated by an oscillating cylinder, the main effect of attenuation is to broaden the two peaks of th...

متن کامل

Admixture and Drift in Oscillating Fluid Flows

The motions of a passive scalar â in a general high-frequency oscillating flow are studied. Our aim is threefold: (i) to obtain different classes of general solutions; (ii) to identify, classify, and develop related asymptotic procedures; and (iii) to study the notion of drift motion and the limits of its applicability. The used mathematical approach combines a version of the two-timing method,...

متن کامل

ذخیره 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: Doboku Gakkai Ronbunshu

سال: 1988

ISSN: 0289-7806,1882-7187

DOI: 10.2208/jscej.1988.393_57