مدل هیدرودینامیکی و کیفی FASTER و کاربرد آن در مهندسی رودخانه

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشیار /دانشکده مهندسی علوم آب، دانشگاه شهید چمران اهواز

2 کارشناس ارشد /سازه های آبی، دانشگاه شهید چمران اهواز

چکیده

در مقاله حاضر مدل یک بعدی هیدرودینامیکی و کیفی FASTER معرفی شده است. این مدل اولین بار توسط کاشفی‌پور در مرکز تحقیقات آب دانشگاه کاردیف انگلستان توسعه پیدا کرد. در این مدل سطح آب و دبی به کمک حل عددی فرم کامل معادلات غیر همگام سنت و نانت تعیین می‌گردند. روش کرانک نیکلسون به شکل تفاضل مرکزی بکار گرفته شده و با بهره‌گیری از سیستم یک در میان یا Staggered معادلات خطی ایجاد شده و با روش ضمنی الگوریتم توماس حل می‌شوند. در مدل FASTER روشی برای حل معادلات تحت عنوان تکنیک خط تأثیر یاInfluence Line Technique  بکار گرفته شده که مدل را قادر می‌سازد در حل کلیه آبراهه‌ها و تقاطع‌ها بصورت ضمنی باقی بماند. بخش کیفی مدل FASTER قادر است 11 نوع آلودگی از جمله کلیفرم‌ها، BOD، DO، ترکیبات نیتروژن، فسفر و ... را مدل نماید. در این مقاله مدل FASTER به کمک دو مثال در بخش هیدرودینامیک شامل حل جریان همگام و متغیر تدریجی در لوپ‌ها و جریان غیر همگام انتقال موج بالادست و یک مثال استاندارد در بخش کیفی صحت‌سنجی گردید.

کلیدواژه‌ها


عنوان مقاله [English]

Hydrodynamic and Water Quality FASTER Model and Its Application in River Engineering

نویسندگان [English]

  • S. M Kashefipour 1
  • A. A Tavakoly Zadeh 2
1 Associate Professor, Department of Hydraulic Structures, Shahid Chamran University, Ahwaz, Iran
2 Ms.c, Department of Hydraulic Structures, Shahid Chamran University, Ahwaz, Iran
چکیده [English]

This paper introduces the 1D hydrodynamic and water quality, FASTER model. this model was first developed by kashefipour in Environmental Research Centre in Cardiff University, UK. FASTER is able to determine water elevation and discharge using numerical solution of the Saint Venant Unsteady and non uniform equations. The implicit Crank-Nikolson central scheme with staggered method was applied for the hydrodynamic module of the model. The influence line technique was used in the numerical solution and as a result the solution remains implicit for all reaches and junctions. The water quality module of the model is able to simulate eleven different water quality parameters including coliforms, BOD, DO, and etc. In this paper the FASTER model is introduced and its abilities is shown using two examples in hydrodynamic simulations and one standard example in water quality simulation.

کلیدواژه‌ها [English]

  • Numerical methods
  • mathematical model
  • Water quality parameters
  • Advective-dispersion Equation

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