열성층수(熱成層水) 사이의 중간경계면 부근의 유동과 응력 = Flow and Stress Near an Interface Between Thermal Stratified Water

다국어 초록 (Multilingual Abstract)

Stress near interface between thermal stratified water was investigated, changing the temperature difference between the mean temperature of the water in the test tank (1 m wide, 1m high, 2.1m long) and the temperature of the inflow water into the tank, flow rate of circulating water and height of the sink diffuser in the test tank.
The objective of this investigation was to observe the mean stress near an interface by measuring the velocities and the temperature difference.
Following results were obtained through the experiments.
(1) When the flow rate was constant and the difference (T_∞-T_i) between the mean temperature of the fluid in the test tank and the temperature of the inflow water increased by 5. 6,9. 5, 13.5(℃), the mean stress near an interface increased gradually in accordance with the increment of ΔT = T_∞-T_i
(2) When ΔT = T_∞-T_i was constant and flow rate increased by 4.0, 4.8, 6.4, 8.0(LPM), the mean stress near an interface increased gradually in accordance with the increment of the flow rate.
(3) When the height of the sink diffuser was 25cm from tank bottom in comparison with 50cm, the mean stress near an interface increased.