An Improved Numerical Scheme to Evaluate the Pressure Gradient on Unstructured Meshes for Two-phase Flow Analysis
International Communications in Heat and Mass Transfer, Vol.37, No.9, pp.1273-1279, 2010
Author
H.D.Lee, J.J.Jeong, H.K.Cho. H.Y.Yoon,
In multi-dimensional two-phase flows, a local pressure is very important because it directly influences the phase change and it may lead to a great change in the flow field. This in turn puts emphasis on the accurate evaluation of local pressure gradient. This paper presents a new numerical scheme to evaluate the pressure gradient at cell centers on unstructured meshes for a three-dimensional thermal-hydraulic code, named CUPID. The results of the new scheme for a simple test function, a gravity-driven cavity, and a wall boiling two-phase flow are compared with those of the previous schemes in the CUPID code.