Numerical investigation of droplet vaporization and CH_1tn4-air, CH_1tn4-O_1tn2 and CH_1tn4-LOX counterflowing spray flames for elevated pressure [Elektronische Ressource] / presented by Daniela Urzica

DISSERTATIONsubmitted to theCombined Faculties for the Natural Sciences and for Mathematicsof the Ruperto-Carola University of Heidelberg, Germanyfor the degree ofDoctor of Natural Sciencespresented byDaniela Urzica, Chem. Eng.born in Targu Mure¸s, RomaniaExpected oral-examination: July 02, 2010Numerical Investigation of Droplet Vaporizationand CH /Air, CH /O and CH /LOX4 4 2 4Counterflowing Spray Flames for Elevated PressureExaminers: Prof. Dr. Eva GutheilProf. Dr. Uwe RiedelContents1 Introduction and Motivation 92 Droplet Vaporization and Combustion 132.1 Single Droplet Vaporization . . . . . . . . . . . . . . . . . . . . . . . . . 132.2 Combustion in Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142.2.1 Enviromental Impact . . . . . . . . . . . . . . . . . . . . . . . . . 152.2.2 Green Propellants . . . . . . . . . . . . . . . . . . . . . . . . . . . 162.2.3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172.2.4 Combustion of Spray Flames . . . . . . . . . . . . . . . . . . . . . 173 Governing Equations for Reactive Two-Phase Flows 213.1 Description of the Gas Phase . . . . . . . . . . . . . . . . . . . . . . . . 213.1.1 General Equations of the Gas Phase . . . . . . . . . . . . . . . . 213.1.1.1 Mass Conservation . . . . . . . . . . . . . . . . . . . . . 223.1.1.2 Species Mass Conservation . . . . . . . . . . . . . . . . . 233.1.1.3 Momentum Conservation . . . . . . . . . . . . . . . . . 243.1.1.