بررسی تأثیر پارامترهای کلیدی بر میزان اختلاط دو سیال در میکرومیکسرهای چندمرحله‌ای مبتنی بر ساختار شیر تسلا

نوع مقاله : مقاله پژوهشی

نویسندگان
مهزیار قائدی 1
حمیدرضا بهرامی 2
1 دانشجوی کارشناسی ارشد، گروه مکانیک، دانشکده مهندسی مکانیک، دانشگاه صنعتی قم، قم، ایران
2 استادیار، گروه مهندسی مکانیک، دانشگاه صنعتی قم، قم، ایران
چکیده
میکرومیکسرها در صنعت گاز برای ایجاد اختلاط یکنواخت گازها در مقیاس‌های کوچک و کاهش مصرف انرژی اهمیت زیادی دارند. یکی از روش‌های ساخت میکرومیکسر، استفاده از چندین طبقه شیر تسلا است که با طراحی ویژه خود جریان را هدایت و ترکیب می‌کند. در این مقاله با استفاده از روش دینامیک سیالات محاسباتی (سی­اف­دی) و حلگر برپایه حجم محدود، اثر پارامترهایی چون جهت چیدمان (مستقیم و غیرمستقیم)، تعداد مراحل، عدد رینولدز، اختلاف سرعت جریان‌های ورودی و جهت جریان بر عملکرد میکرومیکسرهای تسلا بررسی شده است. نتایج نشان می‌دهد که کارایی چیدمان به عدد رینولدز ورودی وابسته است؛ به‌طوری‌که در رینولدز پایین، چیدمان مستقیم عملکرد بهتری دارد و در رینولدز ورودی یک، حدود بیست درصد راندمان اختلاط بیشتری نسبت به چیدمان غیرمستقیم دارد. در رینولدزهای بالاتر، چیدمان غیرمستقیم با بیست درصد عملکرد بهتر، مؤثرتر عمل می‌کند. همچنین، در تمامی حالات، چیدمان غیرمستقیم مستقیم افت فشار بیشتری ایجاد کرده که بر کارایی کلی سیستم تأثیرگذار است.

کلیدواژه‌ها

موضوعات

عنوان مقاله English

Investigation of the Influence of Key Parameters on the Mixing Efficiency of Two Fluids in Multi-Stage Micro-Mixers Based on Tesla Valve Structure

نویسندگان English

Mahziyar Ghaedi 1
Hamid-Reza Bahrami 2
1 M.Sc. Student, Department of Mechanic, Faculty of Mechanical Engineering, Qom University of Technology, Qom, Iran
2 Assistant Professor, Department of Mechanical Engineering, Qom University of Technology, Qom, Iran
چکیده English

Micro-mixers play a significant role in the gas industry in achieving uniform gas mixing at micro-scales and reducing energy consumption. One approach to constructing micro-mixers involves using multiple stages of Tesla valves, which guide and blend flow through a special design. This study uses the computational fluid dynamics (CFD) method and finite volume-based solver to investigate the impact of parameters such as configuration direction (direct and oblique), number of stages, Reynolds number, inlet velocity difference, and flow direction on the performance of Tesla micro-mixers. Results show that arrangement efficiency depends on the inlet Reynolds number; at low Reynolds numbers, direct configurations perform better, with approximately 20% higher mixing efficiency at Reynolds number one compared to oblique configurations. At higher Reynolds numbers, oblique configurations prove more effective, with 20% better performance. Additionally, in all cases, oblique configurations create more pressure drop, impacting the overall system efficiency

کلیدواژه‌ها English

Tesla valve
micro-mixer
micro-valve
mixing
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  • تاریخ دریافت 03 آذر 1403
  • تاریخ بازنگری 23 آذر 1403
  • تاریخ پذیرش 04 دی 1403