Stability of the flow of a rotating liquid film along the inside surface of a cylindrical tube

1980 ◽  
Vol 38 (6) ◽  
pp. 659-662
Author(s):  
P. B. Begoulev ◽  
B. G. Froishteter
Keyword(s):  
Liquid Film ◽  
Cylindrical Tube ◽  
Inside Surface ◽  
Rotating Liquid

ROCKET ENGINE WITH CONTINUOUSLY ROTATING LIQUID-FILM DETONATION

2019 ◽  
Author(s):  
S.M. FROLOV ◽  
◽  
I.O. SHAMSHIN ◽  
V.S. AKSENOV ◽  
I.A. SADYKOV ◽  
...  
Keyword(s):  
Liquid Film ◽  
Rocket Engine ◽  
Rotating Liquid

Films in narrow tubes

2014 ◽  
Vol 762 ◽  
pp. 68-109 ◽  
Author(s):  
Georg F. Dietze ◽  
Christian Ruyer-Quil
Keyword(s):  
Liquid Film ◽  
Silicone Oil ◽  
Low Frequency ◽  
Cylindrical Tube ◽  
Film Coating ◽  
Two Phase ◽  
Integral Boundary ◽  
Tube Cross Section ◽  
Free Liquid Film ◽  
Low Dimensional

AbstractWe consider the axisymmetric arrangement of an annular liquid film, coating the inner surface of a narrow cylindrical tube, in interaction with an active core fluid. We introduce a low-dimensional model based on the two-phase weighted residual integral boundary layer (WRIBL) formalism (Dietze & Ruyer-Quil, J. Fluid Mech., vol. 722, 2013, pp. 348–393) which is able to capture the long-wave instabilities characterizing such flows. Our model improves upon existing works by fully representing interfacial coupling and accounting for inertia as well as streamwise viscous diffusion in both phases. We apply this model to gravity-free liquid-film/core-fluid arrangements in narrow capillaries with specific attention to the dynamics leading to flooding, i.e. when the liquid film drains into large-amplitude collars that occlude the tube cross-section. We do this against the background of linear stability calculations and nonlinear two-phase direct numerical simulations (DNS). Due to the improvements of our model, we have found a number of novel/salient physical features of these flows. First, we show that it is essential to account for inertia and full interphase coupling to capture the temporal evolution of flooding for fluid combinations that are not dominated by viscosity, e.g. water/air and water/silicone oil. Second, we elucidate a viscous-blocking mechanism which drastically delays flooding in thin films that are too thick to form unduloids. This mechanism involves buckling of the residual film between two liquid collars, generating two very pronounced film troughs where viscous dissipation is drastically increased and growth effectively arrested. Only at very long times does breaking of symmetry in this region (due to small perturbations) initiate a sliding motion of the liquid film similar to observations by Lister et al. (J. Fluid Mech., vol. 552, 2006, pp. 311–343) in thin non-flooding films. This kickstarts the growth of liquid collars anew and ultimately leads to flooding. We show that streamwise viscous diffusion is essential to this mechanism. Low-frequency core-flow oscillations, such as occur in human pulmonary capillaries, are found to set off this sliding-induced flooding mechanism much earlier.

OS10-3 Study on Rotating Liquid-Film Flow on Solid Disk

2007 ◽  
Vol 2007.12 (0) ◽  
pp. 71-72
Author(s):  
Takahiro YAGI ◽  
Yutaka ABE ◽  
Masatoshi IKE ◽  
Ken FUJIMORI
Keyword(s):  
Liquid Film ◽  
Film Flow ◽  
Solid Disk ◽  
Rotating Liquid ◽  
Liquid Film Flow

Advective flow in a rotating liquid film

2016 ◽  
Vol 57 (1) ◽  
pp. 188-194 ◽  
Author(s):  
S. N. Aristov ◽  
K. G. Shvarts
Keyword(s):  
Liquid Film ◽  
Advective Flow ◽  
Rotating Liquid

Study of the drop break-up process on a rotating liquid film using a laser diffraction technique

1999 ◽  
Author(s):  
Sohail H. Zaidi ◽  
G. Ishaq ◽  
A. Aroussi ◽  
B. J. Azzopardi
Keyword(s):  
Liquid Film ◽  
Laser Diffraction ◽  
Rotating Liquid ◽  
Break Up

scholarly journals Dimensional and Mechanical Similarity Analysis of the Flow in Rotating Liquid Film Reactor

2013 ◽  
Vol 03 (02) ◽  
pp. 33-37 ◽  
Author(s):  
Xue Li ◽  
Lanxi Xu ◽  
Jingjing Zhang ◽  
Wanli Lan
Keyword(s):  
Liquid Film ◽  
Similarity Analysis ◽  
Rotating Liquid ◽  
Film Reactor
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