فهرست:
فهرست مطالب
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فهرست جدولها
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فهرست شکلها
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فهرست علائم
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فصل اول- مقدمه و کلیات تحقیق
1
1-1 میکروکانالها
2
1-2 تغییر خاصیت رئولوژیکی سیال
3
1-3 مواد افزودنی به مایعات
3
1-4 میکروکانالها
4
1-4-1 چکیده
4
1-4-2 تاریخچه میکروکانالها
4
1-4-3 معرفی میکروکانالها
5
1-4-4 طبقه‌بندی میکروکانالها و مینیکانالها
6
1-4-5 مزایا و چالشهای میکروکانالها
7
1-4-6 روشهای ساخت میکروکانالها
7
1-4-6-1 فناوری متداول
9
1-4-6-1-1 تغییر شکل میکرو
9
1-4-6-1-2 اره کردن میکرو (برش‌کاری میکرو)
9
1-4-6-2 تکنولوژی مدرن
10
1-4-6-2-1 MEMS (سیستم میکرو الکترومکانیک)
10
1-4-6-2-2 ماشین‌کاری میکرو لیزر
10
1-4-7 جریان تک فاز در میکروکانالها
10
1-4-8 روابط افت فشار
11
1-4-9 روابط انتقال حرارت
13
1-4-9-1 جریان مغشوش
13
1-4-10 کاربردهای میکروکانالها
13
1-5 سیالات غیر نیوتنی
14
1-5-1 طبقه‌بندی سیالات غیر نیوتنی
14
1-5-1-1 سیالات غیر نیوتنی مستقل از زمان
15
1-5-1-2 مدل قاعده توانی
16
1-5-1-3 مدل کراس
17
1-5-1-4 مدل کارئو
17
1-5-1-5 مدل الیس
18
1-5-1-6 سیالات غیر نیوتنی تابع زمان
18
1-5-1-7 سیالات ویسکوالاستیک
19
1-6 نانوسیالات
20
1-6-1 مفهوم نانوسیالات
20
1-6-2 مزایای نهان نانوسیال
22
1-6-3 تهیه نانوسیال
24
1-6-4 خواص ترموفیزیکی نانوسیالات
25
1-6-4-1 چگالی
26
1-6-4-2 گرمای ویژه
26
1-6-4-3 لزجت
26
1-6-4-4 ضریب هدایت حرارتی
28
1-6-5 فناوری نانو
34
1-6-6 تولید نانوذرات
35
1-6-6-1 فرآیندهای حالت بخار
36
1-6-6-2 فرآیند حالت مایع و حالت جامد
37
1-6-6-3 تولید نانوذرات با استفاده از روش سیال فوق بحرانی
38
1-6-7 نانولولهها
39
1-6-8 انتقال حرارت جابهجایی در نانوسیالات
39
1-6-8-1 جابهجایی اجباری در نانوسیالات
40
1-6-8-2 مدل‌های ریاضی تعیین ضریب انتقال حرارت جابهجایی نانوسیالات
41
1-6-8-3 انتقال حرارت جابهجایی طبیعی
45
1- 7 اغتشاش
45
1-7-1 مقدمه
45
1-7-2 ویژگیهای جریان اغتشاشی سیالات
47
1-7-3 مدل‌های اغتشاشی
48
1-7-3-1 مدل k-e
48
1-7-3-2 استفاده از تابع جریان در مدل k-e برای اعداد رینولدز بالا
49
1-7-3-3 مدل k-e در اعداد رینولدز پایین
50
1-7-3-4 مدل RNG
50
1-7-3-5 مدل k-w
51
1-7-3-6 مدل تنش رینولدزی (RSM)
52
فصل دوم- مطالعات آزمایشگاهی، عددی و تئوریک
53
2-1 مقدمه
54
2-2 مطالعات آزمایشگاهی
54
2-3 مطالعات تئوریک
57
2-4 مطالعات عددی
61
فصل سوم- روش تحقیق
64
3-1 مقدمه
65
3-2 تشریح مسئله
65
3-3 تعیین خواص ترموفیزیکی نانوسیال
67
3-4 شبکه‌بندی و تعیین شرایط مرزی
69
فصل چهارم- نتایج
70
4-1 محاسبه خواص ترموفیزیکی نانوسیال
71
4-2 محاسبه ضریب انتقال حرارت جابهجایی و عدد ناسلت
72
4-3 اعتبار سنجی
75
4-4 محاسبه ضریب انتقال حرارت جابهجایی و عدد ناسلت سیال غیرنیوتنی پایه
76
4-5 تأثیر غلظت نانوذرات بر ضریب انتقال حرارت جابهجایی و عدد ناسلت
78
4-6 تأثیر اندازه نانوذرات بر ضریب انتقال حرارت جابهجایی
83
4-7 تأثیر عدد رینولدز بر ضریب انتقال حرارت جابهجایی نانوسیال و عدد ناسلت
86
فصل پنجم- نتیجه‌گیری و پیشنهادات
90
5-1 نتیجه‌گیری
91
5-2 پیشنهادات
91
منابع و مآخذ
93
Abstract
100
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