Diverging Converging Flows of Dilute Polymer Solutions : 1st Report, Pressure Distribution and Velocity Profile
نویسندگان
چکیده
منابع مشابه
One-dimensional Bubbly Cavitating Flows through a Converging-diverging Nozzle
A non-barotropic continuum bubbly mixture model is used to study the one-dimensional cavitating ow through a converging-diverging nozzle. The nonlinear dynamics of the cavitation bubbles are modeled by the Rayleigh-Plesset equation. Analytical results show that the bubble/bubble interaction through the hydrodynamics of the surrounding liquid has important e ects on this con ned ow eld. One clea...
متن کاملPressure-driven transport of particles through a converging-diverging microchannel.
Pressure-driven transport of particles through a symmetric converging-diverging microchannel is studied by solving a coupled nonlinear system, which is composed of the Navier-Stokes and continuity equations using the arbitrary Lagrangian-Eulerian finite-element technique. The predicted particle translation is in good agreement with existing experimental observations. The effects of pressure gra...
متن کاملEquilibrium and Dynamics of Dilute Polymer Solutions
Polymers show universal behavior at long length and time scales. In this chapter, the equilibrium and dynamics of dilute polymer solutions is presented in terms of theoretical models that form the basis of polymer physics. The size of an ideal polymer is calculated from the freely jointed chain model, the freely rotating chain model and the Gaussian equivalent chain model. The Edwards Hamiltoni...
متن کاملStress singularities and the formation of birefringent strands in stagnation flows of dilute polymer solutions
We consider stagnation point flow away from a wall for creeping flow of dilute polymer solutions. For a simplified flow geometry, we explicitly show that a narrow region of strong polymer extension (a birefringent strand) forms downstream of the stagnation point in the UCM model and extensions, like the FENE-P model. These strands are associated with the existence of an essential singularity in...
متن کاملTwo-dimensional turbulence of dilute polymer solutions.
We investigate theoretically and numerically the effect of polymer additives on two-dimensional turbulence by means of a viscoelastic model. We provide compelling evidence that, at vanishingly small concentrations, such that the polymers are passively transported, the probability distribution of polymer elongation has a power law tail: Its slope is related to the statistics of finite-time Lyapu...
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: Bulletin of JSME
سال: 1980
ISSN: 0021-3764,1881-1426
DOI: 10.1299/jsme1958.23.1140