نوع مقاله : مقاله پژوهشی
نویسندگان
1 کارشناسی ارشد مهندسی شیمی دانشگاه جامع امام حسین (ع)، تهران، ایران
2 استادیار دانشکده مهندسی مکانیک، دانشگاه صنعتی جندی شاپور دزفول، دزفول، ایران.
3 دکتری مهندسی کشاورزی دانشگاه تهران، تهران، ایران
4 دکتری مهندسی مکانیک، دانشگاه جامع امام حسین (ع)، تهران، ایران
چکیده .
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Given the decline in water resources, the control and reduction of evaporation from free water surfaces in reservoirs and dams is of considerable importance. One effective method for achieving this goal is the application of anti-evaporation surface-covering fluids. In this study, the effect of the anti-evaporation fluid hexadecanol on water evaporation was investigated. In the experimental section, the reduction of surface water evaporation over a 16-day period was assessed using a Class A pan. During this period, parameters influencing evaporation namely air flow velocity, temperature, and relative humidity were measured three times per day. In the numerical section, the simulation was carried out using the finite-volume method by solving th continuity and momentum equations under the assumption of multiphase flow. The multiphase model was implemented via the Volume of Fluid (VOF) method, considering four phases: water, air, water vapor, and the anti-evaporation fluid. Simulations were performed for two conditions—with and without the anti-evaporation fluid applied to the water surface—using an initial water depth of 2. 4 cm. Following mesh-independence analysis and validation of the model with the experimental data, the unsteady simulation results were examined over a 24-minute interval. The findings indicated that the use of the covering fluid can reduce evaporation by approximately 76%. Furthermore, the discrepancy between the simulation predictions and the experimental measurements was approximately 13%, which is regarded as acceptable.
کلیدواژهها [English]