Two phase flow solver for solid particles in hypersonic Martian entry flows [Elektronische Ressource] / by Abdul Majid

Two Phase Flow Solver for Solid Particles inHypersonic Martian Entry FlowsA thesis accepted by the Faculty of Aerospace Engineering and Geodesy of theUniversität Stuttgart in partial fulfillment of the requirements for the degree ofDoctor of Engineering Sciences (Dr.-Ing.)byAbdul Majidborn in Sahiwal, Pakistanmain referee: Prof.Dr.rer.nat.Hans-Peter Röserco-referee: Prof.Dr.-Ing.habil.Jean-Marc MoschettaDate of defense: 15.03.2011Institute of Space SystemsUniversität Stuttgart2011It is difficult to express my gratitude to my supervisors Dr.-Ing. GeorgHerdrich and Dr.-Ing. Markus Fertig and my colleague Uwe Bauder, so Isimply say that this thesis would have remained a dream without thesupport of them.AbstractIn the Martian atmosphere heavy storms occur, which transport dust particles even intothe higher atmosphere, i.e. up to 40 km of altitude. These particles, with sizes of up to20m, consist of silicon oxides and iron oxides may affect the heat load on the heat shieldduringatmosphericentry. Inthispresentstudy,theseadditionalloadsduetoimpingementof solid particles in hypersonic entry flows in Martian atmosphere are investigated.The Euler-Lagrangian approach is used for the modeling and simulation of solid parti-cles in hypersonic Martian entry flows. For the simulation, the program SINA (SequentialIterative Non-equilibrium Algorithm) previously developed at the Institut für Raumfahrt-systeme is used.