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

None

Kriventsev, V.; 山口 彰

Kriventsev, V.; Yamaguchi, Akira

None

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 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