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فرمت فایل:Word (قابل ویرایش و آماده پرینت)
تعداد صفحه4
Both the problem associated with the non – linear ities in the equation set and pressure – velocity linkaye can be resolved by oobpting an iterative solution strategy such as the SIMPLE algorithm of patankar and spalding (1972) . In this algorithm the convectwe fluxes per unit mass Fthrough cell foces are evaluated from so-called guessed velocity components . Furthermore a guessed pressure field is used solved the momentum equations and a pressure correction equation deduced from the continuity equation is solved to obtain a pressure correction field which is in tern used to update the velocity and pressure fields . to start the teration process we use initial guesses for the velocity and pressure fields . As the algorithm proceeds our aim must be progressively to improve these guessed fields . The process is iterated until convergen co of the velocity and pressure fields .
پایداری معادله ی زیر را به روش Discretized Perturbation بC=0.75 ، C=0.5 تا زمان n+3 رسم نمایید .
شل محدود forward و مشتق مکانی را با عبارت تفاضل محدود backward جایگزین می کنیم . برای حل به این روش از زمان n ، u یکی از گره ها را غیر صفر در نظر گرفته و بقیه را صفر می گیریم .
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