Computer simulation of changes in the wind pressure due to cooling towers-buildings interference

In this paper, a Numerical Analyzer for Scientific and Industrial Requirements (NASIR) is introduced and its accuracy for the solution of three dimensional inviscid incompressible flow equations is assessed by comparison of its results for a test case for which the analytical solution of the velocity and pressure field can be obtained by application of the potential functions. Then Computer simulation of wind flow around a set of three cooling towers downstream of some buildings in the KAZERUN power station, which are under construction in south part of IRAN is presented. The developed flow-solver is applied to investigate the wind pressure on structural surfaces of these towers with particular arrangement. This software which solves the governing equations for wind flow on unstructured finite volumes, the equation of continuity can be simultaneously solved with the equations of motion in a coupled manner for the steady state problems by application of the pseudo compressibility technique. This technique helps coupling the pressure and the velocity fields during the explicit computation procedure of the incompressible flow problems and therefore speeds up the convergence of the solution. The discrete form of the three-dimensional flow equations are formulated using the Cell Vertex Finite Volume Method for unstructured mesh of tetrahedral cells. Using unstructured meshes provides great flexibility for modeling the flow in geometrically complex domains. The computed results are presented in terms of color coded maps of pressure and velocity fields as well as velocity vectors on boundary surfaces of the solution domain.