کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
646519 1457158 2014 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical and experimental study on the heat and mass transfer of porous plate water sublimator with constant heat flux boundary condition
ترجمه فارسی عنوان
مطالعات عددی و تجربی بر روی انتقال گرما و جرمی زیرلایتر آب ورق متخلخل با شرایط مرزی شار حرارتی ثابت
کلمات کلیدی
زیرمیزیاتور، تبخیر، تصحیح کردن، صفحه متخلخل بررسی عددی و تجربی، سفینه فضایی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی


• Mathematical model of porous plate water sublimator was presented.
• Numerical model was validated through experiment results.
• Pore scale phase change locations were obtained through numerical model.
• Evaporation/sublimation mass flow rate through the porous plate was estimated.

Water sublimators offer effective heat rejection for the spacecraft, which work in warm environments or with peak heat loads, by evaporating or sublimating water into the vacuum. In this study, the heat and mass transfer of porous plate water sublimator with constant heat flux boundary condition was investigated numerically and experimentally. The startup process of sublimator was divided into three continuous states to analyze its work characteristics: water evaporation in the feed water gap state, water evaporation in the porous plate state and the alternation of evaporation and sublimation in the porous plate state. The locations of evaporation/sublimation front and freezing/thawing interface in the micron porous plate associate with the rarefied water vapor flow through the porous plate were taken into consideration. The heat and mass transfer equations coupling with phase change and rarefied gas flow through the porous plate were established and solved to evaluate the sublimator temperatures, water and vapor mass flow rates, locations of phase change interfaces. In addition, experiments of a water sublimator test module were conducted to validate the numerical model. The experimental results obtained were consistent with the simulation results.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 67, Issues 1–2, June 2014, Pages 469–479
نویسندگان
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