This paper modeled heating air of a room through examining free convection in a 3D chamber. The chamber had cold and hot sources with Tc and Th temperatures, respectively. Its other walls were adiabatic. This study aimed at predicting effect of temperature difference, displacement of hot and cold sources and their aspect ratio on flow field, temperature and heat transfer rate. To conduct the st...

In this article, a theoretical mathematical model of gas flow through duct in the case local mass and momentum sources sinks is presented. The continuity equation motion with one-dimensional, density-stable flows were used to create model. size their locations have an effect on stream duct, energy losses, parameters mechanical source that causing flow. traditional approach describing concept re...

diversification of phosphorus sources can bring substantial synergy effects within all thesustainable development domains: environmental, economic and social, and such an opportunity should not beoverlooked. urban sinks accumulate phosphorus and other elements and may serve as sources of secondaryraw materials. this paper evaluates phosphorus sources based on their total material requirement (t...

Zonal wind errors in a series of numerical barotropic forecasts are discussed. A characteristic error is the growth of west winds in middle latitudes and their decay to the south. Momentum transport in the absence of momentum sources and sinks in the barotropic model is suggested as the principal contributor to this type of error. Etridence of nonlinear growth of the zonal wind error suggests t...