ABSTRACT
Interpolating matrix method (IMM) is one of the finite difference methods applicable to arbitrary arrangement of mesh points. A computer code for three-dimensional incompressible turbulent flow has been developed and applied to the prediction of wind pressure coefficients on the surfaces of two types of single span greenhouses; span-roof type and curved-roof type. The accuracy of IMM was examined by comparing the wind pressure coefficients on the central vertical section with the wind tunnel experiments when the wind direction was perpendicular to the side wall. It was also compared with the traditional finite difference method with rectangular mesh system.HomePage
IMM predicted that the wind pressure coefficients for the vertical section on the span-roof type greenhouse were closer to the wind tunnel results than those in the traditional finite difference method with rectangular mesh system. However, IMM showed that the reverse flow near the leeward roof was still smaller as compared with the wind tunnel experiment.
For the curved-roof type greenhouse, IMM estimated that the wind pressure coefficients on the surfaces except the windward roof were closer to the wind tunnel experiments than those in the traditional finite difference method.Keywords: interpolating matrix method(IMM), k-e