هیدروفیزیک

هیدروفیزیک

بررسی و تأثیر پیچک های میان مقیاس بر شاخص بازده انرژی کشتی‌های موجود (EEXI) و شاخص شدت کربن (CII) در خلیج فارس

نوع مقاله : مقاله پژوهشی

نویسندگان
دانشکده علوم و فناوری های همگرا، واحد علوم و تحقیقات تهران، دانشگاه آزاد اسلامی، تهران، ایران
چکیده
در خلیج فارس اطلاعات محدودی درباره ویژگی های پیچک های میان مقیاس وجود دارد، در حالیکه این جریان ها میتوانند بر عملکرد کشتی ها اثرگذار باشند . هدف این پژوهش بررسی تأثیر پیچک های میان مقیاس بر شاخص بازده انرژی کشتی های موجود و شاخص شدت کربن در نفتکش ها است. برای این منظور، چهار پیچک میان مقیاس شناسایی شده با داده های اقیانوس شناسی مورد تحلیل قرار گرفتند. مدل با شرایط مرزی و داده های فصلی جریان ها اجرا شد و سرعت جریانها حدود 0.1ms-1 به سمت غرب در ماه های مختلف سال استخراج گردید. سپس اثر این جریان ها بر سرعت، مصرف سوخت و شاخص های زیست محیطی یک نفتکش نمونه محاسبه شد . نتایج نشان داد که استفاده از مسیر پیچک ها به دلیل افزایش طول مسیر، موجب افزایش مصرف سوخت تا حدود 8 – 12 ٪ و افزایش شاخص های آلایندگی میشود؛ در حالیکه مسیرهای عمومی تردد کشتی ها کوتاه تر بوده و از نظر انرژی و هزینه مقرون به صرفه تر هستند. با این حال، آگاهی از موقعیت و ویژگی پیچکها میتواند در شرایط اضطراری مانند از دست دادن سامانه محرکه یا فرمان به پیشبینی مسیر حرکت کشتی و کاهش خطرات کمک کند.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Study and Effects of Mesoscale Eddies in Persian Gulf on the Energy Efficiency Existing Ship Index (EEXI) and Carbon Intensity Indicator (CII)

نویسندگان English

Seyed Saeed Shariati
Sara Allahyaribeik
, Department of Physics, Faculty of Convergent Sciences and Technologies SR.C, Islamic Azad University ,Tehran, Iran.
چکیده English

In the Persian Gulf, information on the characteristics of mesoscale eddies is limited, even though these currents can significantly affect ship performance. The aim of this study is to investigate the impact of mesoscale eddies on the Energy Efficiency Existing Ship Index (EEXI) and the Carbon Intensity Indicator (CII) for oil tankers. Four mesoscale eddies, identified using oceanographic data, were analyzed. A numerical model was implemented with appropriate boundary conditions and seasonal current fields, and a westward current with an average speed of about 0.1 m s⁻¹ was extracted for different months of the year. The effect of these currents on the speed, fuel consumption, and environmental performance indicators of a representative tanker was then evaluated. The results show that following routes influenced by mesoscale eddies increases fuel consumption by approximately 8–12% and leads to higher emission indices because of the longer sailing distance, whereas conventional shipping routes are shorter, more energy-efficient, and more cost-effective. Nevertheless, knowledge of the location and characteristics of these eddies can support better route planning, help anticipate ship drift, and reduce risks during emergencies such as loss of propulsion or steering.

کلیدواژه‌ها English

Medium-Scale Eddies
Persian Gulf Currents
Fuel Consumption
Oil Tankers
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  • تاریخ دریافت 12 آبان 1404
  • تاریخ بازنگری 06 دی 1404
  • تاریخ پذیرش 06 دی 1404