Thermodynamics And Statistical Mechanics

Download Aerothermodynamik German by Oertel, Herbert PDF

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By Oertel, Herbert

Dieses Buch wendet sich an Studenten der Ingenieurwissenschaften und Ingenieure der Raumfahrtindustrie und der Energieverfahrenstechnik. Es verkn?pft die klassischen Gebiete der Aerodynamik mit der Nichtgleichgewichts-Thermodynamik hei?er Gase. Am Beispiel des Wiedereintritts einer Raumkapsel in die Erdatmosph?re werden die aerothermodynamischen Grundlagen und numerischen Methoden zur Berechnung des Str?mungsfeldes der Raumkapsel im gaskinetischen und kontinuumsmechanischen Bereich der Wiedereintrittstrajektorie behandelt. Am Beispiel von Raumfahrtprojekten werden die Methoden entwickelt. Die Autoren sind anerkannte Spezialisten f?r dieses Fachgebiet.

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1: Schematic representation of Component Additivity (CA) and Generalised Composite (GC) modelling approaches to complex substrates. The CA- and GC-terminology is taken from Davis et al. (1998). Component Additivity feldspar smectite hematite + smectite + feldspar + quartz hematite quartz Generalised Composite clay with organic matter weathered feldspar am. 1 Component additivity approach (“bottom-up”) The CA approach is, in principle, a predictive approach. In using this approach, one assumes that each sorbent in a complex assemblage has unique surface sites with particular sorption properties.

Although the datasets for the non-iron minerals are less comprehensive than those for the iron oxide group, several studies have been undertaken in which important aqueous chemical parameters have been varied systematically over a wide range. In making the final selection, particular consideration was given to the range of chemical conditions studied, and the number of parameters varied. Another important consideration was the availability of data to test an issue not covered by other test cases.

For this reason, only one uranium case was selected although there are several good datasets for uranium sorption on natural materials. Instead, the second test case in this group concerned adsorption of a transition metal. The selected datasets were: • Uranium sorption on weathered schist materials from the Koongarra deposit in Northern Australia (TC6). • Cobalt sorption on subsurface materials including separated mineral components from South Carolina, USA, including the effects of humic substances (TC7).

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