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piso algorithm code

Hi I am parastoo i would like to get details on piso algorithm code. My friend Justin said piso algorithm code will be available here and I am now student
The PISO algorithm (implicit pressure with operator division) was proposed by Issa in 1986 without iterations and with large time steps and a lower computing effort. It is an extension of the SIMPLE algorithm used in computational fluid dynamics (CFD) to solve the Navier-Stokes equations. FLOOR is a pressure-velocity calculation procedure for the Navier-Stokes equations originally developed for the non-iterative calculation of the unstable compressible flow, but has been successfully adapted to steady-state problems. The FLOOR involves a predictor step and two corrective steps and is designed to satisfy massive conservation using predictor-corrector steps.

The algorithm can be summarized as follows:
1. Set the boundary conditions.
2. Solve the discretized moment equation to calculate an intermediate velocity field.
3. Calculate the mass flows on the faces of the cells.
4. Solve the pressure equation.
5. Correct the mass flows on the cell faces.
6. Correct the speeds based on the new pressure field.
7. Update the boundary conditions.
8. Repeat from 3 for the prescribed number of times.
9. Increase the time step and repeat from 1.

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