[PDF] Top 20 Turbulence models for viscoelastic fluids

... find viscoelastic fluids under turbulent flows conditions and in other occasions it may be useful to have such fluids flowing under that conditions as for example the transport of fluids at ... See full document

... of turbulence dynamics, both Lumley‟s mechanism and de Gennes‟s mechanism represent a drain of turbulence kinetic energy at the affected ...their turbulence kinetic energy into the elastic energy of ... See full document

... With the evolution of diagnostic tools that capture flow charac- teristics at the microscale there has been growing evidence of wall slip in experiments using both Newtonian and non-Newtonian flu- ids [1]. Simultaneously, ... See full document

... ing viscoelastic expansion flow at low Reynolds number is that the amount of recirculating fluid seems to be suppressed and then, at high enough De, totally ...‘model’ viscoelastic fluids, the UCM, ... See full document

... important fluids which are present in many application areas that affect the human ...these fluids can be found in a wide range of key challenges such as designing models for weather forecast, ... See full document

... ISM fluids in different thermal regimes that are determined purely by the thermal fluctuation ...ISM turbulence within the context of a NI hydrodymanics ... See full document

... confined viscoelastic fluid is still a “work in progress” in rheological engineering, and several contributions have come forward in the recent ...Oldroyd-B fluids in a vertical channel, employing FEM with ... See full document

... with viscoelastic fluids ...the models FENE-CR and FENE-MCR, for steady flows, under both pure shear and pure elongational situations, the material functions of these models are ... See full document

... of fluids is the result of the transfer of momentum to and between ...thus fluids are described as a continuous medium, the so-called continuum ...of fluids to deformation is termed ...many ... See full document

... For the case of 3D simulations, three different meshes were used. Following the experimental work carried out by Hartnett and Kostic [28], and the numerical procedure carried out by Peres et al [4], the flow geometry is ... See full document

... a viscoelastic behavior. The effect of elastic on viscoelastic behavior in the structural response is significant for paviment ...or viscoelastic in each analysis ... See full document

... For the past few years GA has been widely used by hydrologists and hydro-geologists for solution of groundwater and solute transport problems. Memon, et. al. [21] used GA as an optimization tool for identification of ... See full document

... of viscoelastic damping treatments requires a correct identification of the complex modulus of the viscoelastic ...of viscoelastic materials in shear are presented, tested and validated using ... See full document

... Viscoelastic flow in channel having transient hydrodynamic behavior, filled with and without porous medium is addressed. The boundary value problem is investigated through analytical and numerical solutions, for ... See full document

... with viscoelastic fluids, where the ef- fects of temperature-dependence of the viscosity are accounted for, are much scarcer, but no less ...explicit viscoelastic model which is much easier to ...of ... See full document

... The present work addresses the study of the dynamic behavior and vibration control of spinning circular structures, namely plane and sloped (with axial extension, in addition to the radial extension) gearwheels, through ... See full document

... the viscoelastic layer ...the viscoelastic layers of the sandwich structures using the finite element ...one viscoelastic core, and requires special care when simulating non planar ... See full document

... the turbulence characteristic of turbidity current ...of turbulence energy, Reynolds stress and the turbulent ...maximum turbulence intensity happens in both the interface and near the ...the ... See full document

... process. Comparison of these data sets reveals differences on such parameters of the bursting cycle as the maximum shear stress and the transported momentum. These results point to a reorganization of turbulence, ... See full document

... From a user perspective, the proposed computer program was created to read a simple input text file where experimental data is divided into different blocks, organized by temperature in which the laboratory test was ... See full document