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درباره وبلاگ

به توکل نام اعظمت,بسم الله الرحمن الرحیم!
سلام به تمام علاقمندان علم و دانش!
اینجانب احمدرضا رفیعیان دانشجوی رشته مهندسی مکانیک نیروگاه(دانشگاه صنعت آب و برق) هستم!
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به امید موفقیت همه شما عزیزان!
یا علی!
مدیر وبلاگ : احمدرضا رفیعیان
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اگر کمی به دقت بنگریم ، اهمیت انتقال حرارت و جریان سیال در زندگی ما و بسیاری از کاربردهای عملی بطور قابل توجهی مشاهده می شود .
 تقریباً تمام روش های تولید توان ، شامل جریان سیال و انتقال حرارت به عنوان فرآیندهای اصلی می باشند . همچنین این فرآیندها در گرمایش و تهویه مطبوع ساختمان ها نقش اساسی دارند . در بخش های مهمی از صنایع شیمیایی و متالوژی شامل قسمت هایی همچون کوره ها ، مبدل های حرارتی ، کندانسورها و رآکتورها، فرآیندهای ترمو فلوید به کار گرفته میشوند. اساس کار هواپیماها و رآکتورها مدیون جریان سیال، انتقال حرارت و فعل و انفعالات شیمیایی است. در طراحی ماشین های الکتریکی و مدارهای الکترونیکی اغلب انتقال حرارت عامل محدود کننده می باشد. آلودگی محیط زیست اکثراً ناشی از انتقال حرارت و جرم است، همچنین این عوامل در ایجاد طوفانها ، سیلابها و آتش سوزیها نقش بسزایی دارند .
پیشگوئی فرآیندهای انتقال حرارت و جریان سیال به وسیله دو روش اصلی انجام می شود :
1.    تحقیق آزمایشگاهی و محاسبات تئوری
اطلاعات دقیق در مورد یک فرآیند فیزیکی غالباَ توسط اندازه گیری عملی به دست می آید. اما در بیشتر حالت ها انجام چنین آزمایش هایی به علت بزرگ بودن اندازه های دستگاه، بسیار گران و اغلب غیر ممکن است .
یک پیشگویی تئوری حداکثر استفاده را از نتایج مدل ریاضی خواهد برد و در مقایسه با آن نتایج تجربی را مورد استفاده کمتری قرار می دهد. مهمترین امتیاز یک پیشگویی محاسباتی هزینه پایین آن است . 
در بیشتر کاربردها هزینه به کار بردن یک برنامه کامپیوتری به مراتب کمتر از مخارج تحقیق آزمایشگاهی مشابه است. یک تحقیق محاسبه ای می تواند با سرعت قابل ملاحظه ای انجام شود. طراح می تواند مفاهیم صدها ترکیب از حالتهای مختلف را در کمتر از یک روز مطالعه کرده و طرح بهینه را انتخاب نماید. حل عددی یک مسئله اطلاعات کامل و جزئیات لازم را به ما خواهد داد و مقادیر تمام متغیرهای مربوطه مانند ( سرعت ، فشار ، درجه حرارت ، تمرکز نمونه های شیمیایی ، شدت توربولانس ) را در سراسر حوزه مورد آزمایش به دست می دهد. بدیهی است از هیچ بررسی آزمایشگاهی نمی توان انتظار داشت تا چگونگی توزیع کلیه متغیرها را روی تمام میدان اندازه بگیرد. بنابراین حتی وقتی یک کار آزمایشگاهی انجام می شود، بسیار با ارزش خواهد بود که جهت تکمیل اطلاعات آزمایشگاهی حل کامپیوتری آن همزمان به دست آید.
2.    دینامیک سیالات محاسباتی یا CFD
عبارت است از تحلیل سیستم های شامل جریان سیال، انتقال حرارت و پدیده های همراه، نظیر واکنش های شیمیایی، بر اساس شبیه سازی کامپیوتری. CFD روشی بسیار توانمند است، به طوری که طیف وسیعی از کاربردهای صنعتی و غیر صنعتی را نیز در برمی گیرد .
برخی مثال ها عبارتند از :
•    آیرودینامیک هواپیما و وسایل نقلیه
•    هیدرو دینامیک کشتی ها 
•    نیروگاه : احتراق در موتورهای IC و توربین های گاز 
•    توربو ماشین : جریان های داخل گذرگاههای دوار، پخش کننده ها و غیره .
•    مهندسی برق و الکترونیک : خنک کاری دستگاههایی که دارای مدارهای ریز می باشند 
•    مهندسی فرآیند شیمیایی : اختلاط ، جداسازی ، شکل گیری پلیمر
•    مهندسی محیط زیست : توزیع آلودگی و جریانهای گذرا 
•    مهندسی پزشکی : جریان خون عبوری از رگها 
•    مهندسی عمران : جریان عبوری از روی سرریزها و سدها  و ...
نرم افزار FLUENT  به عنوان یک شاخه از CFD اوج هنر برنامه نویسی برای مدل کردن جریان سیال و انتقال حرارت در هندسه های پیچیده است و کاربردهای زیادی در صنایع هوا فضایی، صنایع کشتی سازی، صنایع خودرو سازی و صنایع مربوطه دارد.
از جمله تواناییهای این نرم افزار عبارت است از : 
•    جریان حول یا داخل اجسام دو بعدی یا سه بعدی
•    جریانات تراکم پذیر و تراکم ناپذیر 
•    ساختارهای دورانی یا ثابت (Stationary or Rotating  ) 
•    جریانات غیر لزج، لزج آرام و لزج آشفته
•    محیط های متخلخل
•    انتقال حرارت جابجایی
•    انتقال حرارت کوپل ( شامل هدایت ، جابجایی و تشعشع )
•    انتقال حرارت تشعشعی 
•    جریانات پایدار یا گذرا
•    احتراق 
•    سیالات نیوتنی و غیر نیوتنی 
•    فن های یک بعدی ، مبدل های حرارتی و جریان چند فازی 
•    و . . .

نرم افزار FLUENT  ، به وسیله نرم افزار Gambit  حمایت میشود که این نرم افزار یکی از قدرتمندترین نرم افزارهای مهندسی جهت تولید شبکه است. این نرم افزار، ابزارهای مفید و قابل انعطاف با کاربردی ساده را در اختیار استفاده کننده قرار داده که به کمک آن می توان هندسه و شبکه های پیچیده ای تولید نمود. در Gambit، ابتدا مدل سازی از جسم مورد نظر صورت گرفته و سپس با استفاده از روش های قدرتمند و در عین حال ساده، شبکه بندی روی خط، شبکه بندی روی سطح، شبکه بندی روی حجم و شبکه بندی روی لایه مرزی انجام می گیرد .
با توجه به فراگیر شدن نرم افزار FLUENT  در کشور و احتیاج به دانش بالایی که در زمینه دینامیک سیالات عددی و آیرودینامیک عددی برای کارکردن با این نرم افزار وجود دارد ، ما را بر آن داشت که برای آموزش این نرم افزار قدرتمند ابتدا به تولید هندسه و ایجاد شبکه و خصوصیات شبکه برای تحلیل های مورد نظر تحت عنوان آموزش نرم افزار Gambit پرداخته و در ادامه، مباحث مربوط به کاربرد FLUENT در تحلیل مسائل جریان سیال و انتقال حرارت آموزش داده شود.

از لینک زیر می توانید فایل آموزش این نرم افزارها را دانلود نمایید:

حجم : 7.62Mb




نوع مطلب : مهندسی مکانیک، مهندسی برق، مهندسی عمران، مهندسی پلیمر، مهندسی شیمی، مهندسی هوا و فضا، مهندسی نفت، تهویه مطبوع، نرم افزار مهندسی، نرم افزار محاسباتی، 
برچسب ها : آموزش نرم افزارهای Fluent and Gambit، آموزش فلوئنت، آموزش رایگان، دانلود رایگان فلوئنت، دانلود گمبیت، دانلود آموزش گمبیت،
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The most effective man is often the grooms most reliable and faithful buddy or
relative. The best man is usually the grooms most reliable and
faithful buddy or relative. The ushers may be the
grooms brothers, cousin, or finest pals, or brothers and shut family of the bride.
Responsibilities of the very best Man Before the wedding, he - pays for his personal attire, bought or rented.
May give the envelope to the officiant earlier than the ceremony.
In the course of the ceremony, he - is not part of the processional
however enters with the groom, standing behind the groom and slightly
to the left. After the ceremony, he - instantly serves as one of
the witnesses in signing the marriage license. At the reception, he -
does not stand in the receiving line unless he is also the father of the groom.
After the reception, he - promptly returns each his and the grooms rented formal put on to the suitable location.
پنجشنبه 12 دی 1398 06:58 ق.ظ
The most effective man is often the grooms most reliable and faithful friend or relative.
The very best man is normally the grooms most trustworthy and faithful good friend or relative.

The ushers often is the grooms brothers, cousin, or best friends,
or brothers and close family of the bride. Responsibilities of the perfect Man Before the wedding,
he - pays for his personal attire, purchased or rented.
May give the envelope to the officiant before the ceremony.
Throughout the ceremony, he - is just not part of the processional however enters with the groom,
standing behind the groom and barely to the left.
After the ceremony, he - immediately serves as one
of the witnesses in signing the marriage license.
On the reception, he - doesn't stand in the receiving line until
he is also the father of the groom. After the reception, he
- promptly returns each his and the grooms rented formal wear to the suitable location.
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The ushers will be the grooms brothers, cousin, or greatest associates, or brothers
and close kinfolk of the bride. Responsibilities
of the perfect Man Before the wedding, he - pays for his own attire, bought or rented.
May give the envelope to the officiant before the ceremony.
In the course of the ceremony, he - will not be a part of the processional however enters with the groom, standing behind the groom and slightly to the left.
After the ceremony, he - immediately serves
as one of the witnesses in signing the marriage license.

At the reception, he - doesn't stand within the receiving line unless he can be the father of
the groom. After the reception, he - promptly returns each his and the grooms rented formal put
on to the appropriate location.
چهارشنبه 4 دی 1398 05:43 ق.ظ
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out as the grooms brothers, cousin, or greatest friends, or brothers and close family of the bride.
Responsibilities of the perfect Man Before the wedding, he - pays for his personal attire, bought or rented.
May give the envelope to the officiant earlier than the ceremony.

During the ceremony, he - shouldn't be a part of the processional but
enters with the groom, standing behind the groom and slightly to the left.
After the ceremony, he - instantly serves as one of the witnesses in signing the marriage license.

On the reception, he - does not stand within the receiving line except
he can also be the father of the groom. After the reception, he - promptly returns
both his and the grooms rented formal wear to
the suitable location.
دوشنبه 2 دی 1398 09:12 ب.ظ
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چهارشنبه 20 آذر 1398 12:23 ب.ظ
Hey there! This post couldn't be written any better!
Reading this post reminds me of my good old room mate!
He always kept talking about this. I will forward
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Thank you for sharing!
یکشنبه 17 آذر 1398 01:56 ق.ظ
The most effective man is usually the grooms most trustworthy and faithful good friend or relative.

The perfect man is usually the grooms most reliable and faithful buddy or relative.
The ushers will be the grooms brothers, cousin, or
greatest associates, or brothers and close kinfolk of the bride.
Responsibilities of the very best Man Before the marriage, he - pays for his own attire, bought or rented.
May give the envelope to the officiant earlier than the ceremony.
During the ceremony, he - isn't a part of the processional but enters with the groom,
standing behind the groom and slightly to the left. After the ceremony,
he - immediately serves as one of the witnesses in signing the marriage license.
On the reception, he - doesn't stand in the receiving line
unless he can be the father of the groom. After the
reception, he - promptly returns each his and the grooms rented
formal wear to the appropriate location.
یکشنبه 3 آذر 1398 07:24 ق.ظ
Actually when someone doesn't know after that its up to other people that they will
assist, so here it happens.
چهارشنبه 29 آبان 1398 05:06 ب.ظ
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چهارشنبه 15 آبان 1398 11:50 ب.ظ
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دوشنبه 13 آبان 1398 02:22 ب.ظ
Howdy! This post could not be written any better! Reading
this post reminds me of my old room mate! He always kept
chatting about this. I will forward this page to him. Pretty sure he will have a
good read. Thanks for sharing!
یکشنبه 12 آبان 1398 03:38 ق.ظ
thanks a good deal this website is actually official as well as
informal
پنجشنبه 9 آبان 1398 02:04 ب.ظ
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