1,721,012 research outputs found
An experimental study by liquid crystals of forced convection heat transfer from a flat plate with vortex generators
No full textA CFD investigation of the velocity field and of pressure loss for a turbulent fluid inside an internally finned duct
No full textEffect of intravascular Doppler catheter on velocity distribution of blood in a coronary artery: a finite element modelling approach
No full textApplication of holographic interferometry and liquid crystal thermography to forced convection heat transfer from a rib-roughened channnel
No full textSharp Entry and Transition Effects for Laminar Combined Convection of Water in Vertical Tubes
No full textIn previous work the authors showed a sharp entry to have a definite effect on laminar forced convection to water in a vertical circular tube. The study has been extended to situations of strong aiding natural convection, and new experimental data and numerical predictions are reported. The expected entry effect is confirmed, but it is found to be less marked in a strong combined convection field than in the previous forced convection study. The experimental data also include evidence of transition from laminar flow, and a possible criterion of transition is investigated, based on the axial location of minimum local Nusselt number. This is experimental and predictive data for this criterion are compared with the experimental correlation of Lawrence and Chato based on a criterion of temperature fluctuation
Experimental and numerical study of forced convection heat transfer in a rib-roughened channel
No full textA nonlinear mathematical model for the dynamics of the saccular aneurysm
No full textCerebral berry aneurysms are modeled as a membrane having geometrical spherical symmetry and with properties that combine viscoelastic and plastic behaviour. The forcing action on the membrane is due to the internal pulsatile blood pressure, expressed as a truncated Fourier series, and to the external pressure exerted by the cerebral spinal fluid (CSF) surrounding the aneurysm. A sensitivity and a stability analysis is carried out, and the differences with respect to the purely elastic case are highlighted
Thermal development of a Boussinesq fluid in a circular duct: numerical analysis of wall conduction effects
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