پایان نامه شبیه سازی عددی یک میکرو سنسور اندازه گیری جریان در مدل واقعی آئورت انسان

فهرست:

                                                                                             صفحه

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

1-1- مقدمه. 3

1-2- هدف... 4

1-3- مفاهیم اصلی.. 5

1-3-1- رگ­های خونی.. 5

1-3-2- قلب... 8

1-3-3- سیستم گردش خون.. 10

1-3-4- دوره قلبی.. 11

1-3-5- خون.. 13

1-3-6- جریان خون در آئورت... 16

1-3-7- سی­تی­آنژیوگرافی.. 16

1-3-8- کتتر. 18

1-3-9- سیستم­های میکروالکترومکانیکی.. 19

1-3-10-  انواع میکروسنسورهای اندازه­گیری جریان.. 21

فصل دوم: مروری بر تحقیقات گذشته ....................................................................26

2-1- مطالعات انجام شده در رابطه با میکروسنسورهای اندازه­گیری جریان.. 2

2-2- مطالعات انجام شده در رابطه با جریان خون در بدن.. 34

فصل سوم: معادلات حاکم بر مساله ....................................................................... 39

3-1- جریان الکتریکی.. 41

3-2- سیال.. 42

3-3- جامد. 44

فصل چهارم: طراحی و بهینه­ سازی­ساختار میکروهیتر و تولید هندسه .............. 45

4-1- طراحی و بهینه‌سازی ساختار میکروهیتر. 47

4-2- تولید هندسه­ی مربوط به میکروسنسور، جهت ورود به آئورت... 59

4-3- مراحل ساخت هندسه­ی واقعی آئورت انسان.. 62

4-4-  نحوه ورود کتتر به شریان آئورت... 67

فصل پنجم: حل جریان در هندسه­ی ساده ............................................................ 69

فصل ششم: تحلیل نتایج ........................................................................................ 77

6-1- شرایط مرزی.. 79

2-6- مشخصات سیال.. 92

6-3- مطالعات شبکه. 93

6-4- بررسی رژیم جریان در آئورت... 103

6-5- سخت‌افزار مورد استفاده 103

6-6- شرایط اولیه. 103

6-7- مقایسه­ی نتایج با نتایج حاصل از نرم افزار فلوئنت... 104

6-8- محاسبه­ی اختلاف پتانسیل لازم برای اعمال در دو سر میکروهیتر. 106

6-9- تحلیل و مقایسه نتایج دردوحالت وجود و یا عدم وجود میکروسنسور درآئورت106

فصل هفتم: نتیجه­گیری و پیشنهادات .................................................................. 17-1- نتیجه­گیری.. 145

7-2- پیشنهادات... 147

فهرست منابع ......................................................................................................... 149

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