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Tue, 30 May 2000 00:00:00 +0200Tue, 30 May 2000 00:00:00 +0200On the Dependence of the Solution of Generalized Boltzmann Equations on the Scattering Cross Section: The Inverse Problem
https://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/692
In this paper we consider the problem of the reconstruction of the scattering cross section from the solution of a generalized Boltzmann equation.B. Wiesenpreprinthttps://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/692Tue, 30 May 2000 00:00:00 +0200A Comparison of a Microscopic and a Phenomenological Model for a Polyatomic Gas
https://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/680
Treating polyatomic gases in kinetic gas theory requires an appropriate molecule model taking into account the additional internal structure of the gas particles. In this paper we describe two such models, each arising from quite different approaches to this problem. A simulation scheme for solving the corresponding kinetic equations is presented and some numerical results to 1D shockwaves are compared.S. Körber; B. Wiesenpreprinthttps://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/680Mon, 01 Jan 1990 00:00:00 +0100Several Computer Studies on Boltzmann Flows in Connection with Space Flight Problems
https://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/681
This report contains the following three papers about computations of rarefied gas flows:; ; a) Rarefied gas flow around a disc with different angles of attack, published in the proceedings of the 17th RGD Symposium, Aachen, 1990.; ; b) Hypersonic flow calculations around a 3D-deltawing at low Knudsen numbers, published in the proceedings of the 17th RGD Symposium,; Aachen, 1990.; ; c) Rarefied gas flow around a 3D-deltawing, published in the proceedings of the Workshop on Hypersonic Flows for Reentry Problems,; Part 1, Antibes, France, January 22-25, 1990.; ; All computations are part of the HERMES Research and Development Program.F. Gropengießer; Helmut Neunzert; Jens Struckmeier; B. Wiesenpreprinthttps://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/681Mon, 01 Jan 1990 00:00:00 +0100Low Discrepancy Methods for the Boltzmann Equation
https://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/665
As an alternative to the commonly used Monte Carlo Simulation methods for solving the Boltzmann equation we have developed a new code with certain important improvements. We present results of calculations on the reentry phase of a space shuttle. One aim was to test physical models of internal energies and of gas-surface interactions.H. Babovsky; F. Gropengießer; Helmut Neunzert; Jens Struckmeier; B. Wiesenpreprinthttps://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/665Fri, 01 Jan 1988 00:00:00 +0100