Numerical study of the thermohydraulic transient regime of a twodimensional jet injected into a rectangular cavity
Abstract
A twodimensional numerical procedure is used to simulate the timedependent laminar flow in a rectangular cavity. A warm fluid is injected horizontally into the upper part of the cavity and runs out of the lower part. The evolution of the flow is followed from the starting point, when the flow is at rest, until a steady state is again reached. The parabolic energy and vorticity equations are solved using an alternating directions method, while the elliptic stream function equation is computed by the overrelaxation method. Although the characteristic Rayleigh number is small, the time evolution of the dynamic field is shown to be very different from that observed in the isothermal case. A comparison of the two cases is made, and the results are discussed.
 Publication:

International Journal of Heat and Mass Transfer
 Pub Date:
 October 1981
 DOI:
 10.1016/00179310(81)900685
 Bibcode:
 1981IJHMT..24.1599F
 Keywords:

 Computational Fluid Dynamics;
 Fluid Injection;
 Jet Flow;
 Laminar Flow;
 Thermohydraulics;
 Two Dimensional Flow;
 Cavitation Flow;
 Computerized Simulation;
 Elliptic Functions;
 Flow Distribution;
 Flow Velocity;
 Isothermal Processes;
 Parabolic Differential Equations;
 Rayleigh Number;
 Relaxation Method (Mathematics);
 Steady Flow;
 Stream Functions (Fluids);
 Time Dependence;
 Vorticity Equations;
 Fluid Mechanics and Heat Transfer