پایان نامه بهینه سازی خواص تشعشعی لایه های نازک

فهرست:

فهرست اشکال هشت

فهرست جداول شانزده

فهرست علائم و نمادها هجده

چکیده. 1

فصل اول: مقدمه. 2

1-1    پیشگفتار. 2

1-2    خنک کاری تشعشعی.. 4

1-3    آینه های حرارتی.. 5

1-4    تعریف مسئله. 5

1-5    اهداف پژوهش.... 6

1-6    روش انجام پژوهش.... 6

فصل دوم: مروری بر کارهای انجام شده. 7

2-1    کارهای انجام شده قبلی.. 7

فصل سوم: محاسبه خواص تشعشعی لایه های نازک.. 24

3-1    ضریب شکست و بردار موج مختلط... 24

3-2    پولاریزاسیون s و p.. 25

3-3    محاسبه خواص تشعشعی سطح مشترک دو محیط... 25

3-4    محاسبه خواص تشعشعی یک لایه ضخیم.. 27

3-5    محاسبه خواص تشعشعی یک لایه نازک... 29

3-6    محاسبه خواص تشعشعی یک ساختار چند لایه. 31

3-6-1     پلاریزاسیون s. 31

3-6-2     پلاریزاسیون p.. 33

3-7    محاسبه خواص تشعشعی یک ساختار چند لایه شامل یک لایه ضخیم.. 34

فصل چهارم: مدلسازی و روش بهینه سازی. 37

4-1    خنک کاری تشعشعی.. 37

4-2    آینه های حرارتی.. 42

4-3    ضریب جذب ماکزیمم در محدوده تشعشع خورشید.. 43

4-4    ضریب عبور ماکزیمم در محدوده تشعشع خورشید.. 43

4-5    ضریب بازتاب ماکزیمم در محدوده تشعشع خورشید.. 44

4-6    روش بهینه سازی.. 44

4-6-1     الگوریتم ژنتیک.... 44

شش

4-6-2     روش عملیات حرارتی شبیه سازی شده 46

فصل پنجم: ارائه و تحلیل نتایج.. 49

5-1    اعتبارسنجی محاسبات... 49

5-2    خنک کاری تشعشعی.. 53

5-2-1     خنک کاری در طول روز. 53

5-2-2     خنک کاری در شب... 68

5-2-3     خنک کاری با استفاده از مواد با قابلیت انحلال در آب... 76

5-3    آینه های حرارتی.. 81

5-3-1     لایه ضخیم SiO2. 82

5-3-2     لایه ضخیم BaTiO3. 88

5-4    ضریب جذب ماکزیمم در محدوده تشعشعی خورشید.. 97

5-4-1     ضریب جذب ماکزیمم سلولهای خورشیدی لایه نازک.... 101

5-5    ضریب بازتاب ماکزیمم در محدوده تشعشعی خورشید.. 103

5-6    ضریب عبور ماکزیمم در محدوده تشعشعی خورشید.. 104

فصل ششم: نتیجه گیری و پیشنهاد. 105

6-1    نتیجه گیری.. 105

6-2    پیشنهاد برای پژوهش های آتی.. 106

پیوست 1: نحوه محاسبه خواص تشعشعی به کمک نظریه الکترودینامیک     ........................................................................108

پ1-1     معادلات مکسول............................................................................................................................................108

پ1-2     معادله موج..............                ......................................................................................................................................110

پ1-2-1                فرض هدایت الکتریکی صفر...                ......................................................................................................................110  

پ1-2-2                فرض هدایت الکتریکی غیر صفر............ .......................................................................................................113

پ1-3     بردار پویینتینگ..............................................................................................................................................114

پ1-4     محاسبه خواص تشعشعی سطح مشترک دو محیط................... ........................................................................117

پ1-4-1                پلاریزاسیون s......... ......................................................................................................................................117

پ1-4-2                پلاریزاسیون p......... ......................................................................................................................................120

پ1-5     محاسبه خواص تشعشعی یک ساختار چند لایه.......  .......................................................................................123

پ1-5-1                پلاریزاسیون s......... ......................................................................................................................................123

پ1-5-2                پلاریزاسیون p...............................................................................................................................................127

پیوست 2: نمودارهای خواص تشعشعی ساختارهای بهینه. 130

پ2-1-نمودارهای ساختارهای بهینه خنک کاری در روز. 130

پ2-2-نمودارهای ساختارهای بهینه خنک کاری در شب... 144

هفت

پ2-3-نمودارهای ساختارهای بهینه آینه حرارتی.. 150

پ2-4-نمودارهای ساختارهای بهینه با ضریب جذب بالا.. 156

 مراجع. 162

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