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Approximation Schemes for convective term - structured grids - Summary of Discretizations Schemes and examples

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Revision as of 19:32, 29 September 2005 by Michail (Talk | contribs)
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When we shall fill this page, I offer to make common identifications, because in different issues was used different notation.

Also we beg everybody to help me with original works. Later I shall write, what is necessary. If anyone have literature connected with convective schemes, please drop me a line.

We shall be very glad and grateful to hear any critical suggestion (please drop a few lines at Wiki Forum)

It is just a skeleton, but we hope that it will be developed into the good thing


Contents

Discretizations Schemes Estimation of order

Discretizations Schemes Estimation of error

Selection advice

Comparison of Discretizations Schemes

Numerical examples

Pure convection of a scalar step by a rotating velocity field (Smith-Hutton test)

R.M.Smith and A.G.Hutton (1982), "The numerical treatment of advection: A performance comparison of current methods", Numerical Heat Transfer, Vol. 5, p439.

This was the test problem devised for evaluating a range of numerical models of convection at the third meeting of the International Association for Hydraulic Research Working Group on Refined Modelling of flow

Sometimes it was used scalar profile with a discontinuity at  \boldsymbol{x=-0.5}

We shall use here more smooth inlet profile

 
la-la
(1)

Square Lid-driven cavity flow

Example code for solving Smith-Hutton test

Dear friends

It's just a scrap. Later I'll correct it, although it's a complete working code

Michail

Sample code for solving Smith-Hutton test - Fortran 90

It's a results, obtained using this code (UDS and HLPA schemes)

Below it's cleary seen the numerical diffusion impact, comparing the contour fields obtaining using the UDS and HLPA. A bit later we shall place here a solution gained with QUICK scheme, and it will be seen the osscilations.

NM convectionschemes struct grids Smith Huton Vector Field probe 01.jpg

NM convectionschemes struct grids Smith hutton stream lines probe 01.jpg

NM convectionschemes struct grids Smith hutton Countor HLPA. probe 01.jpg

NM convectionschemes struct grids Smith hutton Countor HLPA 02 probe 03.jpg

NM convectionschemes struct grids Smith hutton Countor UDS 02 probe 03.jpg

NM convectionschemes struct grids Smith Hutton Profiles UDS 02 probe 01.jpg



NM convectionschemes struct grids Smith Hutton profiles HLPA probe 01.jpg

My wiki