Dependence of the heat transfer coefficient on the vibration amplitude and frequency of a vertical thin heater

The effect of mechanical vibrations of a heated string on the heat transfer coefficient at various heat fluxes has been studied experimentally. An empirical relation between the coefficient and the vibration frequency and amplitude with unchanged q has been found.Stavropol State Pedagogical Institute, Stavropol, Russia. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 67, Nos. 1–2, pp. 20–22, August–September, 1994.     

Adaptation of models for automated design of cold rolling protocols for beryllium bronze strips

In connection with a plan to install new production equipment for production of copper-alloy, zinc-alloy, and beryllium-bronze strips (including rolling of BrB2 alloy) at the Moscow Non-Ferrous Metals Processing Plant (MZOTsM) the strain regimes for cold rolling were determined. An automated workstation for a sheet rolling process engineer was used in the design process. The curve for the true yield point for BrB2 alloy as a function of deformation was determined with improved accuracy. A rolling-force model was adapted for design calculations of the forming force when rolling BrB2-alloy strips, enabling arbitrarily accurate adjustment of thickness on a four-high 125 strip mill. __________ Translated from Metallurg, No. 4, pp. 71–72, April, 2007.     

Improved numerical simulations of incompressible flows based on viscous/inviscid interaction procedures

Viscous/inviscid interaction procedures consist usually of coupling potential flow and boundary layer calculations. In this study, the interaction is modeled using Helmholtz-type velocity decomposition where the gradient of the potential is augmented with a correction accounting for the vorticity effects in the viscous layers. Different ways to calculate the rotational components are discussed and methods to systematically improve the model are studied. Numerical results are compared with standard Navier–Stokes calculations to justify the present approach.     

Abstracts of articles deposited at VINITI

Journal of Engineering Physics and Thermophysics -