Intrusion of fluid into the inflow branch of a 180degapproach mixing tee
Abstract
Two mathematical models were developed to estimate the extent of densitydriven intrusion of a warmer fast flowing fluid into a cooler fluid's inlet conduit in a 180 deg approach mixing tee. One is an inviscid model which incorporates two additional simplifying assumptions to give an initial estimate of the significance of the temperature difference and fluid velocity. This estimate is an initial step in an iterative procedure for a numerical solution scheme. The second method is a perturbation solution for a low Reynolds number flow. The matching of the solution in two regimes will require the numerical solution of equations to determine the associated coefficients. Once this is done streamline patterns can be drawn for a variety of Froude, Reynolds, and Prandtl numbers.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 September 1976
 Bibcode:
 1976STIN...7727355D
 Keywords:

 Flow Velocity;
 Fluid Flow;
 Flux Density;
 Inlet Flow;
 Pipe Flow;
 T Shape;
 Density Distribution;
 Flow Coefficients;
 Mathematical Models;
 Temperature Gradients;
 Thermal Stresses;
 Fluid Mechanics and Heat Transfer