پایان نامه بررسی عددی تأثیر میکرو ساختارها بر انتقال حرارت و اختلاط مایعات در میکروکانال ها

فهرست:

فصل 1: مقدمه                                                                                                      1

1-1- پیشگفتار                                                                                          2

1-2- نحوه ساخت میکروکانال                                                                        5

1-3- توصیف مسأله                                                                                    8

1-4- اهداف پایان نامه                                                                                11

فصل 2: مروری بر تحقیقات گذشته                                                                     12

فصل 3: اختلاط در ابعاد کوچک                                                                         28

3-1- چالش ایجاد انتقال جرم و اختلاط در ابعاد کوچک                                       29

3-2- پدیده انتقال جرم                                                                              29

3-2-1- انتقال جرم از طریق مکانیزم نفوذ                                                       30

3-2-2- انتقال جرم از طریق مکانیزم جابجایی                                                  30

3-3- انواع ریزمخلوط‌کن‌ها و شیوه‌های اختلاط                                                 31

3-4- میکروکانالهای پره دار به عنوان ریزمخلوط‌کن‌ها                                         34

3-5- روشهای تعیین میزان اختلاط                                                               36

فصل 4: معادلات حاکم                                                                                       38

4-1- مقدمه                                                                                            39

4-2- تولید شبکه                                                                                      40

4-3- معادلات حاکم                                                                                  42

4-4- شرایط مرزی                                                                                    43

عنوان                                                                                                               صفحه

فصل 5: نتایج                                                                                                    46

5-1- معرفی هندسه مسأله                                                                          47

5-2- مطالعه شبکه                                                                                   51

5-3- همگرایی                                                                                        54

5-4- سنجش صحت نتایج برای چاه حرارتی                                                    55

میکروکانالی پره دار با فرض دائمی بودن جریان

5-5- نتایج به دست آمده برای چاه حرارتی                                                     58

میکروکانالی پره دار با فرض دائمی بودن جریان

5-5-1- انتقال حرارت در میکروکانال چاه حرارتیcm² 2×1                               58

5-5-2- انتقال حرارت در چاه حرارتیcm² 1×1                                             65

5-6- نرخ تولید انتروپی در چاه حرارتی میکروکانالی                                          73

5-7- بررسی رفتار غیر دائمی جریان در چاه حرارتی میکروکانالی پره دار                 76

5-7-1- سنجش صحت نتایج برای حل زمانمند جریان                                      76

 حول یک استوانه دو بعدی

5-7-2- نتایج به دست آمده برای چاه حرارتی میکروکانالی                                 79

 پره دار با فرض ناپایدار و دو بعدی بودن جریان

5-7-3- سنجش صحت نتایج برای جریان سه بعدی زمانمند حول یک استوانه          82

5-7-4- نتایج به دست آمده برای چاه حرارتی میکروکانالی پره دار                        87

 با فرض ناپایدار و سه بعدی بودن جریان

5-8- نتایج برای اختلاط مایعات در میکروکانالها                                               88

5-8-1- صحه گذاری نتایج عددی حاضر برای اختلاط مایعات در میکروکانالها           88

5-8-2- نتایج به دست آمده برای اختلاط در میکروکانالها                                    89

فصل 6: جمع بندی و پیشنهادات                                                                      97

6-1- جمع بندی                                                                                                98

عنوان                                                                                                               صفحه

6-2- پیشنهادات                                                                                                     99

مراجع                                                                                                                   100

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