Institute of Engineering Thermophysics

Instability of natural convection in a vertical flat porous microchannel

Purpose This paper aims to focus on the hydrodynamic stability of steady-state natural convection inside a vertical flat porous microchannel. The main objective is to investigate the transition conditions from stable to unstable flow under the Boussinesq approximation, explicitly...

Experimental studies of heat transfer regimes with boiling crisis in a vertical channel at high heat fluxes

The results of experimental studies of heat transfer during water boiling in a vertical heated tube with a diameter of 0.013 m and a length of 2.6 m are presented. The studies were conducted in the following ranges of variation: pressure from 4 MPa to 16 MPa, mass velocity from 1...

Microwave properties of PVC-based composite films with yttrium iron garnet and carbon fillers

Thin poly(vinyl chloride)-based composite films containing 20 wt.% Y3Fe5O12 and 10 wt.% carbon filler exhibit a pronounced filler-dependent electromagnetic response in the Ka-band. Activated carbon, MWCNTs, graphene nanoplatelets, carbon nanoparticles, and carbon black were chara...