The dynamic behavior of freely propagating premixed flames with large Lewis numbers was computationally simulated using a sixth-order central difference scheme and non-reflective boundary conditions. Results in the linear stage of the instability growth show that the growth rate dramatically decreases with increasing Lewis number and that the large activation energy excites the pulsating instab...

We present three novel pulsating solutions of the cubic-quintic complex Ginzburg-Landau equation. They describe some complicated pulsating behavior of solitons in dissipative systems. We study their main features and the regions of parameter space where they exist.

Convection heat transfer in pulsating turbulent flow with large velocity oscillating amplitudes in a pipe at constant wall temperature is numerically studied. A low-Reynolds-number (LRN) k–e turbulent model is used in the turbulence modeling. The model analysis indicates that Womersley number is a very important parameter in the study of pulsating flow and heat transfer. Flow and heat transfer ...

The lightweight titanium alloys possess good resistance to corrosion and temperature. They are used in turbine engines aircraft structures. strength of weld joint is dependent on thermal history the zone bead geometry. quality can be improved by specifying optimal welding parameters. Trial-and-error experimental methods time-consuming expensive. This paper deals with Computational Fluid Dynamic...

In this study, the pulsating flow of a non-Newtonian fluid and heat transfer in pipe with uniform flux at its wall is examined analytically. The assumed to be both hydrodynamically thermally fully developed. perturbation method based on series expansion used analysis. periodic change period-averaged values friction factor Nusselt number as well velocity temperature profiles are obtained varying...

Demand for high-performance cooling systems is one of the most challenging and virtual issues in the industry and Pulsating heat pipes are effective solutions for this concern. In the present study, the best predictor correlations of flow boiling and condensation are taken into account to model a single turn pulsating heat pipe mathematically. These considerations, result in derivation of more ...