The present document describes an approach for deriving a model of the power spectral density (PSD) for the fluctuating pressure in a turbulent flow. Ultimately, a model for compressible, transitional and fully turbulent pressure fluctuation loading to calculate a random vibration pressure field on an RB/RV during reentry conditions is sought. Both a power spectral density (PSD) as well as a pr...

Hi-Res Print, Annotate, Reference QuickView ACS ActiveView PDF PDF [616K] PDF w/ Links [287K] Full Text HTML Sponsored Access Section: Pharmacology Monascin and Ankaflavin Have More Anti-atherosclerosis Effect and Less Side Effect Involving Increasing Creatinine Phosphokinase Activity than Monacolin K under the Same Dosages Chun-Lin Lee, Yu-Ping Hung, Ya-Wen Hsu, and Tzu-Ming Pan pp 143–150 Pub...

In this study, we considered an inflationary inventory control model under non-deterministic conditions. We assumed the inflation rate as a normal distribution, with any arbitrary probability density function (pdf). The objective function was to minimize the total discount cost of the inventory system. We used two methods to solve this problem. One was the classic numerical approach which turne...

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A Monte Carlo–probability density function (pdf) method based on a Lagrangian particle technique to calculate the transported pdf of the thermochemical (scalar) properties has been implemented in the finite volume code KIVA-3 to model three-dimensional premixed transient combustion in a two-stroke engine. The main advantage of the pdf method is that chemical reactions in turbulent flows can be ...

Testing path delay faults (PDFs) in VLSI circuits is becoming an important issue as we enter the deep submicron age. However, it is difficult in general since the number of faults is normally very large and most faults are either hard to sensitize or are untestable. In this paper, we propose a probabilistic PDF model. We investigate probability functions for the wire and path delay size to mode...

Xr provides a vector-based rendering API with output support for the X Window System and local image buffers. PostScript and PDF file output is planned. Xr is designed to produce identical output on all output media while taking advantage of display hardware acceleration through the X Render Extension. Xr provides a stateful user-level API with support for the PDF 1.4 imaging model. Xr provides...

The use of probability density function (PDF) methods for turbulent combustion simulations is very attractive because arbitrary finite-rate chemistry can be exactly taken into account. PDF methods are well developed for non-premixed turbulent combustion. However, many real flames involve a variety of mixing regimes (non-premixed, partially-premixed and premixed turbulent combustion), and the de...