30 research outputs found
The carcinogenic effect of various multi-walled carbon nanotubes (MWCNTs) after intraperitoneal injection in rats
Natural Convection Heat Transfer and Entropy Generation From a Horizontal Cylinder With Baffles
Entropy Generation due to Laminar Natural Convection From a Horizontal Isothermal Cylinder
Aerodynamically Controlled Expansion Nozzle for Short Takeoff and Vertical Landing Aircraft
Local entropy production in turbulent shear flows: A tool for evaluating heat transfer performance
Performance of laser Doppler velocimeter with polydisperse seed particles in high-speed flows
A Local Thermal Non-Equilibrium Analysis of Fully Developed Forced Convective Flow in a Tube Filled with a Porous Medium
A local thermal non-equilibrium model has been considered for the case of thermally fully developed flow within a constant heat flux tube filled with a porous medium. Exact temperature profiles for the fluid and solid phases are found after combining the two individual energy equations and then transforming them into a single ordinary differential equation with respect to the temperature difference between the solid phase and the wall subject to constant heat flux. The exact solutions for the case of metal-foam and air combination reveal that the local thermal equilibrium assumption may fail for the case of constant heat flux wall. The Nusselt number is presented as a function of the Peclet number, which shows a significant increase due to both high stagnant thermal conductivity and thermal dispersion resulting from the presence of the metal-foam.autho