دانلود مقاله ISI

دانلود مقاله ISI سال 2013
چهارشنبه ۱۹ تير ۱۳۹۲ :: نويسنده : همایون

به نام خدا

Title: Numerical simulation and optimization of CO2 sequestration in saline aquifers

Authors: Zheming Zhang, Ramesh Agarwal

Abstract: With heightened concerns on CO2 emissions from coal fired electricity generation plants, there has been major emphasis in recent years on the development of safe and economical Carbon Dioxide Capture and Sequestration (CCS) technology worldwide. Saline reservoirs are attractive geological sites for CO2 sequestration because of their huge capacity for long term sequestration. Over the last decade, numerical simulation codes have been developed in US, Europe and Japan to determine a priori the CO2 storage capacity of a saline aquifer and to provide risk assessment with reasonable confidence before the actual deployment of CO2 sequestration can proceed with enormous investment. In US, the 2nd version of Transport of Unsaturated Groundwater and Heat (TOUGH2) numerical simulator has been widely used for this purpose. However at present, it does not have the ability to determine optimal parameters such as injection rate, injection pressure, injection depth for vertical and horizontal wells, etc. for optimization of the CO2 storage capacity and for minimizing the leakage potential by confining the plume migration. This paper describes the development of a “Genetic Algorithm (GA)” based optimizer for TOUGH2 that can be used by the industry with good confidence to optimize the CO2 storage capacity in a saline aquifer of interest. This new code including the TOUGH2 and the GA optimizer is designated as “GATOUGH2”. It has been validated by conducting simulations of three widely used benchmark problems by the CCS researchers worldwide: (a) study of CO2 plume evolution and leakage through an abandoned well, (b) study of enhanced CH4 recovery in combination with CO2 storage in depleted gas reservoirs, and (c) study of CO2 injection into a heterogeneous geological formation. The results of these simulations are in excellent agreement with those of other researchers using different codes. The validated code has been employed to optimize the proposed water-alternating-gas (WAG) injection scheme for (a) a vertical CO2 injection well and (b) a horizontal CO2 injection well, in order to optimize the CO2 sequestration capacity of an aquifer. The optimized calculations from GATOUGH2 are compared with the brute force nearly optimized results obtained by performing a large number of calculations. These comparisons demonstrate the significant efficiency and accuracy of GATOUGH2 as an optimizer compared to using TOUGH2 in a brute force manner. This capability holds a great promise in studying a host of other problems in CO2 sequestration such as how to optimally accelerate the capillary trapping, accelerate the dissolution of CO2 in water or brine, and immobilize the CO2 plume.   

Publish Year: 2013

Published in: Computers and Fluids - Science Direct

Number of Pages: 9

موضوع: مهندسی مواد، متالورژی

مشاهده صفحه اول مقاله

دانلود مقاله

لینک مقاله در سایت ناشر


ایران سای – مرجع مقالات علمی فنی مهندسی

حامی دانش بومی ایرانیان

برچسب ها : دانلود مقاله ، دانلود مقالات IEEE ، دانلود مقالات ISI ، دانلود رایگان مقاله IEEE ، دانلود رایگان مقاله ISI ، دانلود رایگان مقالات IEEE ، دانلود رایگان مقالات ISI ، دانلود مقاله از IEEE ، یوزرنیم و پسورد دانشگاه های معتبر ، دانلود رایگان مقاله مهندسی ، دانلود رایگان مقالات مهندسی ، دانلود رایگان مقاله Springer ، دانلود رایگان مقاله Science Direct ، دانلود رایگان مقاله ACM ، دانلود رایگان مقاله از ACM ، دانلود رایگان مقالات ACM ، دانلود مقاله آی اس آی ، دانلود رایگان مقاله آی اس آی ، دانلود مقالات آی اس آی ، دانلود رایگان مقالات آی اس آی ، یوزرنیم و پسورد سایتهای علمی ، دانلود رایگان مقاله ، Paper Download ، ISI Paper Download ، Free ISI Paper Download ، IEEE Paper Download ، Science Direct Paper Download ، ACM Paper Download ، Springer Paper Download ، Free Paper ، ISI Download ،
ارسال نظر
نام شما :
آدرس وب سایت :
پست الکترونیک :
پیام شما :
کد امنیتی :

آمار وبلاگ
  • افراد آنلاین : ۲
  • بازدید امروز : ۲۰۴
  • بازدید دیروز : ۱
  • بازدید این هفته : ۶۲۷
  • بازدید این ماه : ۱۷۸۵
  • بازدید امسال : ۱۹۵۰
  • بازدید کل : ۷۹۶۵۲
  • تعداد پست ها : ۱۲۷
  • تعداد نظرات : ۰