پایان نامه شبیه سازی پدیده ی کشش سطحی دینامیکی در سیستم های نفت حلال بر اساس فرآیند نفوذ

فهرست:

فصل اول: مقدمه..........................................................................................................................................1

فصل دوم: مبانی تحقیق.............................................................................................................................4

2-1- کشش سطحی تعادلی و روش­های اندازه گیری آن.................................................................5

2-1-1- دسته­ی اول: اندازه گیری با استفاده از یک میکروبالانس..................................................7

2-1-2- دسته­ی دوم: اندازه گیری فشار مویینگی..............................................................................8

2-1-3- دسته­ی سوم: آنالیز تعادل بین نیروهای گرانش و موئینه ...............................................9

2-1-4- دسته­ی چهارم: آنالیز قطره­های منحرف شده بر اثر گرانش ....................................... 10

2-2- کشش سطحی دینامیک ...........................................................................................................13

 فصل سوم: روش های اندازگیری ضریب نفوذ ................................................................................14

3-1- روش های اندازه گیری ضریب نفوذ به صورت مستقیم.......................................................16

3-2- روش های اندازه گیری ضریب نفوذ به صورت غیر مستقیم.........................................16

3-2-1- اندازه گیری ضریب نفوذ بر اساس تغییر حجم گاز ..................................................16

3-2-2- اندازه گیری ضریب نفوذ بر اساس تغییر فشار گاز..........................................................18

3-2-3- اندازه گیری ضریب نفوذ بر اساس آنالیز کشش سطحی تعادلی و دینامیکی...........19

3-2-4-  اندازه گیری ضریب نفوذ بر اساس شکل قطره­ی معلق................................................22

3-2-5-  اندازه گیری ضریب نفوذ بر اساس حجم قطره­ی معلق................................................25

فصل چهارم: مروری بر تحقیقات انجام شده.....................................................................................27

4-1- پیشینه­ی تحقیق.........................................................................................................................28

فصل پنجم: انجام کار.............................................................................................................................32

5-1- قسمت آزمایشگاهی....................................................................................................................33

5-1-1- مواد به کار رفته  ................................................................................34

5-1-2- تجهیزات به کار رفته در آزمایش.........................................................................................34

5-1-3- شرح آزمایش............................................................................................................................35

5-2- قسمت مدلسازی...........................................................................................................................36

5-2-1- مدل انتقال جرمی.................................................................................................................. 37 فصل ششم: نتایج......................................................................................................................................44

6-1- اندازه گیری کشش سطحی دینامیکی.....................................................................................44

6-2- کشش سطحی تعادلی.................................................................................................................47

6-3- محاسبه­ی ضریب نفوذ با فرض عدم وجود مقاومت در مرز گاز- مایع..............................52

6-4- محاسبه­ی ضریب انتقال جرم در مرز گاز- مایع با فرض وجود مقاومت مرزی...............59

6-5- اثر دما، فشار و زمان روی ضریب انتقال جرم مرزی..............................................................60

فصل هفتم: نتیجه گیری...................................................................................................................72

فصل هشتم: پیشنهادات....................................................................................................................75

 منابع.....................................................................................................................................................77

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