Space Mapping Approach for Particle Control in Turbulent Flows

Controlling the motion of particles in turbulent flows, the paper at hand presents an efficient space–mapping approach that is based on a hierarchy of models. The approach reduces the highly complex optimization of the k-ε turbulence model for high Reynolds–number flows (fine model) to the cheaper one of the Navier–Stokes equations for smaller Reynolds–number (laminar) flows in direct numerical simulations on coarser grids (coarse model) by help of a space–map function that maps the respective coarse model control onto the desired fine model control. The numerical results are very convincing in terms of accuracy and computational effort. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)     

磁性离子交换树脂连续化运行条件的研究

本文针对现行离子交换操作过程和离子交换树脂的不足,研制出一种新磁性离子交换树脂,并对其应用于连续化子离子交换过程的运行条件进行了较详细的研究,结果表明,磁性离子交换树脂应用于连续化操作过程,可增大操作流速或提高工作效率。     

Buchbesprechungen

Sans résumé

---

Book reviews

---

Buchbesprechungen

     

Optimum ratio of electron-to-hole mobility in P3HT:PCBM organic solar cells

We investigate the influence of different electron-to-hole mobility ratios on the performance of a P3HT:PCBM bulk heterojunction organic solar cell by using numerical simulations. We show that in some particular mobility cases using a ratio between electron and hole mobility higher than one can improve power conversion efficiency.     

Selective total encapsulation of the sulfate anion by neutral nano-jars

Nano-sized toroidal copper(II)-hydroxide/pyrazolate assemblies, lined by H-bond donors on the inside and hydrophobic on the outside, selectively extract sulfate from mixtures with nitrate or perchlorate. Tetrabutylammonium "lids" seal the "nano-jars" and render the encapsulated sulfate anion completely buried and inaccessible, so that it is not precipitated by Ba(2+) ions.     

Buchbesprechung

Ohne Zusammenfassung     

Buchbesprechungen

Ohne Zusammenfassung

---

Book reviews

---

Notices bibliographiques