This paper deals with the interaction between two those flows in a two-dimensional room. The room has one inlet and one or two outlets. A heat source locates on the floor. The numerical simulation of the interaction is carried out at some values of Re and Ra for two cases of the inlet and outlet configuration. Some interesting characteristics of the resultant flow are discovered. | Vietnam Journal of Mechanics, VAST, Vol. 37, No. 3 (2015), pp. 177 – 186 DOI: SOME CHARACTERISTICS OF THE RESULTANT AIR FLOW FROM MOTIONS INDUCED BY VENTILATION AND HEAT SOURCE IN A TWO-DIMENSIONAL ENCLOSURE T. V. Tran∗ , N. T. Thuy VNU, University of Science, Hanoi, Vietnam ∗ E-mail: trantv@ Received January 19, 2014 Abstract. Ventilated air flow in an enclosure is often unsteady (turbulent) at even very low Reynolds number (Re). Meantime natural convection in a box is stationary motion at large enough Rayleigh number (Ra). This paper deals with the interaction between two those flows in a two-dimensional room. The room has one inlet and one or two outlets. A heat source locates on the floor. The numerical simulation of the interaction is carried out at some values of Re and Ra for two cases of the inlet and outlet configuration. Some interesting characteristics of the resultant flow are discovered. The heat amount released by the source and removed from the room by different types of this flow is also provided. Keywords: Ventilation, convection, interaction, heat source, inlet, outlet. 1. INTRODUCTION Ventilation of living or working enclosed spaces has permanent practical interest. Removal of heat from a large industrial factory or small electronic equipment by ventilation has been a challenging problem for both theoretical investigation and practical application. An overview on studies related to this subject is done in the work of Qingyan Chen [1]. Natural convection in various enclosed spaces caused by heating or cooling boundary or inside heat sources has been investigated intensively since publishing Chandrasekhar’s book [2]. Many of these studies concern the instability of such convective motion. Later researchers have paid more attention to applied aspect of the problem by considering natural or mixed convection in living or working enclosed spaces [3–6]. The main concern of such investigations is to calculate the
