Marangoni convection in radiating fluids

Journal Article · Sat Aug 01 00:00:00 EDT 1987 · Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States)

DOI:https://doi.org/10.1115/1.3248148· OSTI ID:6064564

Bayazitoglu, Y; Lam, T T ^[1]

---

1. Rice Univ., Houston, TX (United States)

The onset of Marangoni convection driven by surface tension gradients in radiating fluid layers is studied. The system considered consists of a fluid layer of infinite horizontal extent which is confined between a free upper surface and a rigid isothermal lower surface. The radiative boundaries of black-black, mirror-mirror, and black-mirror are considered. The critical conditions leading to the onset of convective fluid motions in a microgravity environment are determined numerically by linear stability theory. The perturbation equations are solved as a Bolza problem in the calculus of variations. The results are presented in terms of the critical Marangoni number and optical thickness for a wide range of some radiative parameters, including the Plank number, nongrayness of the fluid, and the emissivity of the boundaries. It is found that radiation suppresses Marangoni convection during material processing in space.

• OSTI ID: 6064564
• Journal Information: Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States), Vol. 109:3; ISSN 0022-1481
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
WORKING FLUIDS
CONVECTION
COOLING
SPACE VEHICLES
THERMAL RADIATION
ELECTROMAGNETIC RADIATION
ENERGY TRANSFER
FLUIDS
HEAT TRANSFER
MASS TRANSFER
RADIATIONS
VEHICLES
420400* - Engineering- Heat Transfer & Fluid Flow