Evaluation of finite element formulations for transient conduction forced-convection analysisNumerical studies clarifying the advantages and disavantages of conventional versus upwind convective finite elements are presented along with lumped versus consistent formulations for practical conduction forced-convection analysis. A finite-element procedure for treatment of negligible capacitance fluid nodes is presented. The procedure is based on procedures used in finite-element structural dynamics to treat nodes with negligible structural mass. Two finite-element programs and a finite-difference lumped-parameter program used in the studies are discussed. Evaluation studies utilizing three convection and two combined conduction-convection problems are then presented and discussed. Additionally, the computational time saving offered by the finite element procedure is considered for a practical combined conduction-convection problem.
Document ID
19790065330
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Thornton, E. A. (Old Dominion University Norfolk, Va., United States)
Wieting, A. R. (NASA Langley Research Center Hampton, Va., United States)