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simulation and improvement of the ventilation of a welding workshop using a finite volume scheme code  Fulltext 

[ mani mahdinia ] - M.sc . Student
[ amir ghasemi ] - M.sc . Student
[ bijan farhanieh ] - professor

خلاصه مقاله:

a finite volume CFD code is develiped for the solution of the navier-stokes equations in an industrial ventilation domain. The point at the middle of the domain, having a temperature of 500 c. is the place where a welding process is being accomplished. due to the high temperature at the vicinity, three fans (one supply and two exhausts) are used. the purpose of this study is to investigate the effect of different parameters on the local ventilation and developing the most effective ventilation scheme for this applied problem.in order to find the velocity components and the temperatures, the equations are solved in a cartesian coordinate system and a collocated frid. to prevent the checherboard distribution velocuty components on the faces of the control volumes are obtained by the rhie and chow interpolation scheme. simple alforithm is used for the modeling of the pressure-velocuty couplin. convection fluxes have been discretised, using the upwind scheme and the resulting equations have been transformed into a tri-diafonal matrix with the use of the ADI technique and solved with tomas tri-diagonal algorithm. for the sake of maximum accuracy the grid has been refined at the points of larger velocuty gradients. the developed code accuracy has been veified againts the cavity flow test case cheched for the grid independency.

insustrial ventilation, computational fluid dynamics, simple algorithm, quick scheme, rhie chow interpolation scheme