Diffuser and Nozzle Design Optimization by Entropy Generation Minimization
AbstractDiffusers and nozzles within a flow system are optimized with respect to their wall shapes for a given change in cross sections. The optimization target is a low value of the head loss coefficient K, which can be linked to the overall entropy generation due to the conduit component. First, a polynomial shape of the wall with two degrees of freedom is assumed. As a second approach six equally spaced diameters in a diffuser are determined by a genetic algorithm such that the entropy generation and thus the head loss is minimized. It turns out that a visualization of cross section averaged entropy generation rates along the flow path should be used to identify sources of high entropy generation before and during the optimization. Thus it will be possible to decide whether a given parametric representation of a component’s shape only leads to a redistribution of losses or (in the most-favored case) to minimal values for K.
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Schmandt, B.; Herwig, H. Diffuser and Nozzle Design Optimization by Entropy Generation Minimization. Entropy 2011, 13, 1380-1402.
Schmandt B, Herwig H. Diffuser and Nozzle Design Optimization by Entropy Generation Minimization. Entropy. 2011; 13(7):1380-1402.Chicago/Turabian Style
Schmandt, Bastian; Herwig, Heinz. 2011. "Diffuser and Nozzle Design Optimization by Entropy Generation Minimization." Entropy 13, no. 7: 1380-1402.