• 태양에너지
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• 제6권2호
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• pp.15-21
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• 1986

In this study, an experimental double diffusive thermohaline system heated from below was constructed and the phenomena of each layer developed in the system were observed. The experiment was performed with the initial salt concentration gradient of $-436.2kg/m^4$ and the net heat flux of approximately $176w/m^2$. An electroconductivity-temperature probe was made and used for the measurements of salt concentration. As the result of this study, it was found that the salt concentration decreased in the bottom mixed layer and increased in the top mixed layer during the experiment while the salt concentration gradient in the diffusive layer unchanged. It was also found that the interfacial boundary layers were due largely to variations in salt concentration rather than temperature.

• 대한설비공학회지:설비저널
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• 제15권4호
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• pp.380-387
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• 1986

In this study, the models for a double-diffusive thermohaline system heated from below were developed and the governing equations were established taking account of the density variation with time. The six order Runge-Kutta method was used for the solution of the simultaneous governing differential equations and the temperature and salt concentration distributions and height of each layer within the system were predicted. As the result of this study, it was found that the predicted values with the convective layer growing proportionality constant of 0.18 showed a good agreement with available experimental data. It was also found that the effect of density change with time on the temperature profile in the bottom convective layer could not be negligible.

• 대한설비공학회지:설비저널
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• 제16권6호
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• pp.606-612
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• 1987

In this study, numerical model was developed to predict behavior of several layers in a solar pond and was solved by finite difference method. The empirical correlation that described heat and salt fluxes across interfacial boundary layer between mixed layer and diffusive layer in a solar pond were obtained from experiments and utilized in developing numerical model. As the results of this study, heat and salt fluxes across the interfacial boundary layer was found to depend on density ratio ${\beta}{\Delta}M_s/{\alpha}{\Delta}T.$ It was also found that the predicted value obtained by using the modified Weinberger's stability criteria showed a good agreement with experiment data.

• 대한기계학회논문집
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• 제11권2호
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• pp.304-313
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• 1987

본 논문에서는 하부가열식 실험용 태양연못을 제작하여 열유속과 초기의 소금 농도구배를 변화시켜 가면서 실험을 수행하였다.실험을 통하여 측정한 각 층안의 온도와 소금농도구배 및 하부혼합층의 성장율 등을 바탕으로 지배방정식과 가정을 세 운뒤 이들 방정식을 풀어 실험테이터와 비교하였다.