Yg. Lai, AN UNSTRUCTURED GRID METHOD FOR A PRESSURE-BASED FLOW AND HEAT-TRANSFER SOLVER, Numerical heat transfer. Part B, Fundamentals, 32(3), 1997, pp. 267-281
An unstructured grid method is developed along with an implicit pressu
re-based solver to calculate flow and heat transfer problems. The meth
od ir finite volume based and utilizes collocated and cell-centered st
orage scheme. New second-order discretizations of the convection and d
iffusion terms are derived and presented for triangular or tetrahedral
cells. The pressure damping for promoting stability and the PISO algo
rithm for resolving the velocity-pressure coupling are extended to the
unstructured grid solver A number of two-dimensional flow cases have
been calculated to validate the unstructured grid method. The validati
on cases encompass laminar and turbulent flows with and without heat t
ransfer. At the end, an application to a flow through a branched duct
with cooling fins is presented to demonstrate the flexibility of the u
nstructured grid method for flows with complex geometry.