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شبیهسازی نفوذ آب دریا در آبخوان ساحلی به کمک روش عددی MLPG | ||
| آبخوان و قنات | ||
| دوره 5، شماره 1 - شماره پیاپی 8، آذر 1403، صفحه 19-44 اصل مقاله (1.45 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22077/jaaq.2024.8115.1076 | ||
| نویسندگان | ||
| الهام کریم زاده1؛ ابوالفضل اکبرپور* 2؛ علی محتشمی3 | ||
| 1دانشجوی کارشناسی ارشد مهندسی عمران، مدیریت منابع آب، دانشگاه بیرجند،بیرجند،ایران. | ||
| 2استاد گروه عمران دانشگاه بیرجند، بیرجند، ایران. | ||
| 3استادیار کرسی یونسکو در مطالعات افلج (باستان شناسی)، دانشگاه نیزوا، نیزوا، عمان | ||
| چکیده | ||
| آبخوانهای ساحلی، سفرههای آب زیرزمینی هستند که در کنار دریا قرار گرفتهاند. همواره کیفیت آب این آبخوانها مورد توجه بوده و یکی از اصلیترین نگرانیها در این مورد نفوذ آب شور دریا به آبخوان میباشد. میزان اثرپذیری آب سفره، به جریان آب زیرزمینی و همچنین غلظت ماده آلاینده نمک بستگی دارد؛ از طرفی میزان شوری وارده نیز به عواملی چون فعالیتهای کشاورزی و انسانی، تغییرات اقلیمی و غیره وابسته است. امروزه با عنایت به کمبود منابع آب استفاده از منابع آب زیرزمینی افزایش یافته، لذا بررسی پدیده نفوذ آب شور امری ضروری تلقی میشود که در این مطالعه به بررسی آن پرداخته میشود. در این تحقیق از معادلات نفوذ که شامل معادلات جریان و انتقال هستند استفاده شد. برای حل معادلات مذکور از روش بدون شبکه محلی پتروو-گالرکینMLPG استفاده شد. بهجهت صحتسنجی نتایج، معادلات مسئله استاندارد هنری حل شد. برای بررسی نتایج، مسئله هنری با نرم افزار FEFLOW حل و با مدل پیشنهادی مقایسه گردید و مشاهده شد که نتایج حاصل از روش بدون شبکه پتروو-گالرکین محلی به نتایج مدل اجزاء محدود FEFLOW نزدیک میباشد که این نشان از دقت قابل قبول این مدل میباشد. | ||
| کلیدواژهها | ||
| نفوذ آب شور؛ معادلات جریان و انتقال؛ روش پتروو-گالرکین محلی؛ مدل FEFLOW | ||
| مراجع | ||
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