Numerical modeling of steady, laminar free-convective boundary layer flow beneath heated or combusting horitzonal surfaces
Abstract
The system of equations describing free-convective fluid flow is complicated by the cross-coupling of the transport of momenum and internal energy: the buoyancy force is the driving term in the momentum equations, yet it arises from a temperature distribution which is dominated by convection. Variable density flows regardless of configuration are additionally complicated by the presence of high frequency modes, sound waves and gravity waves, which, though irrelevent to the computation of the steady state solution, cause customary numerical procedures to be intolerably inefficient unless they are selectively suppressed. A numerical method designed to overcome these difficulties is presented, and its use in solving the diffusion flame problem of a freely burning ceiling is illustrated.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- June 1984
- Bibcode:
- 1984PhDT........41K
- Keywords:
-
- Boundary Layer Flow;
- Convective Heat Transfer;
- Laminar Boundary Layer;
- Mathematical Models;
- Aerothermochemistry;
- Buoyancy;
- Diffusion Flames;
- Finite Difference Theory;
- Momentum Transfer;
- Temperature Distribution;
- Fluid Mechanics and Heat Transfer