000013919 001__ 13919
000013919 005__ 20161115094005.0
000013919 04107 $$aeng
000013919 046__ $$k2016-08-21
000013919 100__ $$aRouquier, Anthony
000013919 24500 $$aNumerical study of the transition to turbulence in particulate pipe flows

000013919 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000013919 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000013919 506__ $$arestricted
000013919 520__ $$2eng$$aWe present a stability analysis of a pipe flow with particle suspension. Particles are considered solid, spherical, heavy with an unique size and density. The particles are, in our physical model, modelled as a continuous phase and for the fluid-particles interactions only the Stokes drag is taken into account, the other forces being neglected. We first use a linear stability analysis to study the influence of the addition of particles to the global stability of the flow. Single phase pipe flows have been proven to be globally stable for any Reynolds number, we find that this is also the case for particulate pipe flows. The effect of particles varies with the concentration and the size of the particles, but it remains relatively weak. Then a nonlinear transient growth analysis allows us to look for the optimal perturbation triggering turbulence and the effects of particles.

000013919 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013919 653__ $$a

000013919 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000013919 720__ $$aRouquier, Anthony
000013919 8560_ $$ffischerc@itam.cas.cz
000013919 8564_ $$s60045$$uhttps://invenio.itam.cas.cz/record/13919/files/PO.FM07-1.12.128.pdf$$yOriginal version of the author's contribution as presented on CD, XMLout( page 1007, code PO.FM07-1.12.128).
000013919 962__ $$r13812
000013919 980__ $$aPAPER