| タイトル | Effects of End-Wall Vibration on Oscillatory Thermocapillary Flow |
| 著者（英） | Kou, Q.; Bhowmick, J.; Anilkumar, A.; Wang, T.; Grugel, R. |
| 著者所属（英） | NASA Marshall Space Flight Center |
| 発行日 | 2000-01-01 |
| 言語 | eng |
| 内容記述 | Our previous float zone experiments 1,2 with NaNO3 revealed that steady thermocapillary flow (TC flow) can be balanced/offset by the controlled surface streaming flow (CSS flow), induced by end-wall vibration. In the current experiments, we are examining the effects of surface streaming flow on steadying/stabilizing oscillatory thermocapillary flow. To this effect, we have set up a controlled NaNO3 half-zone experiment, where the processing parameters like zone dimensions and temperature gradients scan be easily varied to achieve oscillatory TC flow. In the present paper, we discuss the thermal signature of the TC flow, and how it is affected by imposition of CSS flow. The results will also include a comparison of the microstructure of a NaNO3- BaNO3 eutectic, processed under oscillatory TC conditions, with and without imposed CSS flow. |
| NASA分類 | Fluid Mechanics and Thermodynamics |
| 権利 | No Copyright |
|
