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Numerical Accuracy of Temperature,Velocity and Pressure Distributions Predicted with Efficient Finite-Differencing(EFD) SCHEME

Kriventsev, V.; Yamaguchi, Akira

A new Efficient Finite-Differencing(EFD)scheme has been applied to the sample problems of heat transfer and fluid flow.EFD is a "locally-exact" finite-difference scheme that uses one-dimensional analytical solution of convection-diffusion equation with linearized diffusion coefficient and source term. Fully-developed turbulent flow in a plane channel has been chosen as a sample. Energy, momentum and mass conservation equations have been solved in two-dimension rectangular calculation area positioned at the angle of45$$^{circ}$$ to the main flow direction. Results of numerical simulations are compared with the exact solution as well as with other popular finite-difference discretizations. This comparison has shown that EFD can significantly improve the accuracy of simulation or

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