In this article, we propose a computationally efficient iterative algorithm for proper orthogonal decomposition (POD) using random sampling based techniques. algorithm, additional rows and columns are sampled merging technique is used to update the dominant POD modes in each iteration. We derive bounds spectral norm of error introduced by series operations. use an existing theorem get approxima...

The 3-component velocity distribution of two lean-burn gas turbine fuel injectors are measured at a planar location near and parallel to the injector outlet. nominally same design, but one features blocked central passages study effects presence multi-streams reveal single stream characteristics embedded within multi-stream configuration. Stereoscopic particle image velocimetry is used in an is...

This paper presents a novel, more efficient proper orthogonal decomposition (POD) based reduced-order model (ROM) for compressible flows. In this POD the governing equations, i.e., conservation of mass, momentum, and energy equations were written using specific volume instead density. substitution allowed pre-computation coefficients system ODEs that make up model. Several methods employed to e...