Computation of Transonic Viscous-Inviscid Interacting Flow, (9999)
Whitfield,D. L., Thomas,J. L., Jameson,A., Schmidt,W.
Transonic viscous-inviscid interaction is considered using the Euler and inverse compressible turbulent boundary-layer equations. Certain improvements in the inverse boundary-layer method are...
Numerical Solutions of the Euler Equations Simulating Vortex Flows Around Wings, (9999)
Rizzi,A., Eriksson,L. E., Schmidt,W., Hitzel,S.
The Euler equations have been established as an appropriate model for inviscid vortex flow. This paper demonstrates the range of this model's applicability by presentation of flowfields computed...
Tornado Autopilot Measures to Ensure Survivability after Failures, (9999)
Measures applied to the autopilot of the TORNADO to ensure survivability of the aircraft after failures during automatic low level flying are presented. Apart from redundant equipment, these measures...
Koegl, C, Trein, A, Schmidt, W, Baumgarten, A, Jaeger, H, Stellbrink, HJ
No abstract available.
Wolf, E, Trein, A, Schmidt, W, Baumgarten, A, Jaeger, H, Stellbrink, HJ
No abstract available.
Kitsionas, S., Klessen, R., Federrath, C., Schmidt, W., Price, D., Dursi, J., ...
Simulations of astrophysical turbulence have reached a level of sophistication that quantitative results are now starting to emerge. Contradicting results have been reported, however, in the...
Turbulent Mixing in the Interstellar Medium -- an application for Lagrangian Tracer Particles (2008)
Federrath, C, Glover, S C O, Klessen, R S, Schmidt, W
We use 3-dimensional numerical simulations of self-gravitating compressible turbulent gas in combination with Lagrangian tracer particles to investigate the mixing process of molecular hydrogen (H2)...
Overview of JET results (2008)
Pamela, J., Solano, E. R., Adams, J. M., Agarici, G., Agarici, M., Akhter, H., ...
Scientific and technical activities on JET focus on the issues likely to affect the ITER design and operation. Our understanding of the ITER reference mode of operation, the ELMy H-mode, has...
Rezaei, R., Schmidt, W., Beck, C., Kalkofen, W., Schlichenmaier, R.
We study chromospheric emission to understand the temperature stratification in the solar chromosphere. We observed the intensity profile of the CaIIH line in a quiet Sun region close to the disk...
Iapichino, L., Adamek, J., Schmidt, W., Niemeyer, J. C.
The problem of the resolution of turbulent flows in adaptive mesh refinement (AMR) simulations is investigated by means of 3D hydrodynamical simulations in an idealised setup, representing a moving...
Laser Frequency Combs for Astronomical Observations (2008)
Steinmetz, Tilo, Wilken, Tobias, Araujo-Hauck, C., Holzwarth, Ronald, Hänsch, Theodor W., Pasquini, L., ...
The signature of chromospheric heating in Ca II H spectra (2007)
Beck, C., Schmidt, W., Rezaei, R., Rammacher, W.
We analyze a 1-hour time series of Ca II H intensity spectra and polarimetric spectra around 630 nm to derive the signature of the chromospheric heating and to investigate its relation to magnetic...
The Numerical Simulation of Turbulence (2007)
In this contribution, I give an overview of the various approaches toward the numerical modelling of turbulence, particularly, in the interstellar medium. The discussion is placed in a physical...
Temporal evolution of magnetic elements (2007)
Rezaei, R., Schlichenmaier, R., Schmidt, W., Beck, C.
We study the structure and evolution of the magnetic field of the quiet Sun by investigating weak spectro-polarimetric signals. To this end, we observed a quiet region close to the disk center with...
Hinode observations reveal boundary layers of magnetic elements in the solar photosphere (2007)
Rezaei, R., Steiner, O., Wedemeyer-Böhm, S., Schlichenmaier, R., Schmidt, W., Lites, B. W.
We study the structure of the magnetic elements in network-cell interiors. A quiet Sun area close to the disc centre was observed with the spectro-polarimeter of the Solar Optical Telescope on board...
A three-dimensional deflagration model for Type Ia supernovae confronted with observations (2007)
Roepke, F. K., Hillebrandt, W., Schmidt, W., Niemeyer, J. C., Blinnikov, S. I., Mazzali, P. A.
A simulation of the thermonuclear explosion of a Chandrasekhar-mass C+O white dwarf, the most popular scenario of a type Ia supernova (SN Ia), is presented. The underlying modeling is pursued in a...
Opposite magnetic polarity of two photospheric lines in single spectrum of the quiet Sun (2007)
Rezaei, R., Schlichenmaier, R., Schmidt, W., Steiner, O.
We study the structure of the photospheric magnetic field of the quiet Sun by investigating weak spectro-polarimetric signals. We took a sequence of Stokes spectra of the Fe I 630.15 nm and 630.25 nm...
GREGOR: the New German Solar Telescope (2007)
Balthasar, H., Kneer, F., Staude, J., Volkmer, R., Berkefeld, T., ...
GREGOR is a new open solar telescope with an aperture of 1.5m. It replaces the former 45-cm Gregory Coude telescope on the Canary island Tenerife. The optical concept is that of a double Gregory...
Relation between photospheric magnetic field and chromospheric emission (2007)
Rezaei, R., Schlichenmaier, R., Beck, C. A. R., Schmidt, W.
We simultaneously observed the Stokes parameters of the photospheric iron line pair at 630.2 nm and the intensity profile of the chromospheric Ca II H line at 396.8 nm in a quiet Sun region at a...
Photospheric magnetic field and chromospheric emission (2007)
Rezaei, R., Schlichenmaier, R., Beck, C., Schmidt, W.
We present a statistical analysis of network and internetwork properties in the photosphere and the chromosphere. For the first time we simultaneously observed (a) the four Stokes parameters of the...
In thermonuclear supernovae, intermediate mass elements are mostly produced by distributed burning provided that a deflagration to detonation transition does not set in. Apart from the...
Burger, H., Schloen, M., Schmidt, W., Geiger, H.H.
Organic farming has gained in importance in Germany during the past years. Therefore an increasing demand exists for varieties with specific adaptation to this farming system. Hence it becomes...
SESAME - an experiment of the ROSETTA lander philae: Objectives and general design (2007)
Seidensticker, K.J., Möhlmann, D., Apathy, I., Schmidt, W., Thiel, K., Arnold, W., ...
SESAME is an instrument complex built in international co-operation and carried by the Rosetta lander Philae intended to land on comet 67P/Churyumov-Gerasimenko in 2014. The main goals of this...
A three-dimensional deflagration model for type Ia supernovae compared with observations (2007)
Röpke, F. K., Hillebrandt, W., Schmidt, W., Niemeyer, J. C., Blinnikov, S. I., Mazzali, P. A.
Sesame – an experiment of the Rosetta lander Philae: objectives and general design (2007)
Seidensticker, K. J., Möhlmann, D., Apathy, I., Schmidt, W., Thiel, K., Arnold, W., ...
The loss of ions from Venus through the plasma wake (2007)
Barabash, S., Fedorov, A., Sauvaud, J. J., Lundin, R., Russell, C. T., Futaana, Y., ...
Solar Orbiter Neutral Solar Wind Detector (2007)
Hilchenbach, M., Orsini, S., Hsieh, K. C., Antonucci, E., Barabash, S., Bamert, K., ...
SUNRISE: High resolution UV/VIS observations of the Sun from the stratosphere (2007)
Gandorfer, A. M., Solanki, S. K., Barthol, P., Martínez Pillet, V., Schmidt, W., Title, A. M., ...
Observation of a short-lived pattern in the solar chromosphere (2006)
Wöger, F., Wedemeyer-Böhm, S., Schmidt, W.
In this work we investigate the dynamic behavior of inter-network regions of the solar chromosphere. We observed the chromosphere of the quiet Sun using a narrow-band Lyot filter centered at the Ca...
Schmidt, W., Niemeyer, J. C., Hillebrandt, W.
We present a one-equation subgrid scale model that evolves the turbulence energy corresponding to unresolved velocity fluctuations in large eddy simulations. The model is derived in the context of...
Schmidt, W., Niemeyer, J. C., Hillebrandt, W., Roepke, F. K.
The dynamics of the explosive burning process is highly sensitive to the flame speed model in numerical simulations of type Ia supernovae. Based upon the hypothesis that the effective flame speed is...
PFG NMR and QENS diffusion study of n-alkane homologues in MFI-type zeolites (2006)
Jobic, H., Schmidt, W., Krause, C. B., Kärger, J.
Recent methodological progress in pulsed field gradient (PFG) NMR and quasi-elastic neutron scattering (QENS) is exploited to enhance the range of diffusion measurement of the series of the n-alkane...
Peculiarities of the antiferromagnetism in CeCu2Si2 (2006)
Stockert, O., Faulhaber, E., Schmalzl, K., Schmidt, W., Jeevan, H. S., Deppe, M., ...
Coexistence of ferromagnetic and antiferromagnetic spin correlations in La1.2Sr1.8Mn2O7 (2006)
Chatterji, T., Koza, M. M., Demmel, F., Schmidt, W., Aman, U., ...
This version is available at the following Publisher URL: http://prb.aps.org
Carbon dioxide photoelectron energy peaks at Mars (2006)
Frahm, R. A., Winningham, J. D., Sharber, J. R., Scherrer, J. R., Jeffers, S. J., Coates, A. J., ...
First ENA observations at Mars: ENA emissions from the martian upper atmosphere (2006)
Futaana, Y., Barabash, S., Grigoriev, A., Holmstrom, M., Kallio, E., Brandt, P. C., ...
First ENA observations at Mars: Subsolar ENA jet (2006)
Futaana, Y., Barabash, S., Grigoriev, A., Holmstrom, M., Kallio, E., Brandt, P. C., ...
Solar wind plasma protrusion into the martian magnetosphere: ASPERA-3 observations (2006)
Dubinin, E., Winningham, D., Fränz, M., Woch, J., Lundin, R., Barabash, S., ...
First ENA observations at Mars: Solar-wind ENAs on the nightside (2006)
Brinkfeldt, K., Gunell, H., Brandt, P. C., Barabash, S., Frahm, R. A., Winningham, J. D., ...
Observations of magnetic anomaly signatures in Mars Express ASPERA-3 ELS data (2006)
Soobiah, Y., Coates, A. J., Linder, D. R., Kataria, D. O., Winningham, J. D., Frahm, R. A., ...
Ionospheric plasma acceleration at Mars: ASPERA-3 results (2006)
Lundin, R., Winningham, D., Barabash, S., Frahm, R. A., Andersson, H., Holmstrom, M., ...
Electric fields within the martian magnetosphere and ion extraction: ASPERA-3 observations (2006)
Dubinin, E., Lundin, R., Fränz, M., Woch, J., Barabash, S., Fedorov, A., ...
First ENA observations at Mars: Charge exchange ENAs produced in the magnetosheath (2006)
Gunell, H., Brinkfeldt, K., Holmstrom, M., Brandt, P. C., Barabash, S., Kallio, E., ...
Numerical interpretation of high-altitude photoelectron observations (2006)
Liemohn, M. W., Frahm, R. A., Winningham, J. D., Ma, Y., Barabash, S. B., Lundin, R., ...
SMART-1 mission to the Moon: Status, first results and goals (2006)
Foing, B. H., Racca, G. D., Marini, A., Evrard, E., Stagnaro, L., Almeida, M., ...
Plasma intrusion above Mars crustal fields-Mars Express ASPERA-3 observations (2006)
Fränz, M., Winningham, J. D., Dubinin, E., Roussos, E., Woch, J., Barabash, S., ...
Mass composition of the escaping plasma at Mars (2006)
Carlsson, E., Fedorov, A., Barabash, S., Budnik, E., Grigoriev, A., Gunell, H., ...
Structure of the martian wake (2006)
Fedorov, A., Budnik, E., Sauvaud, J. A., Mazelle, C., Barabash, S., Lundin, R., ...
Electron oscillations in the induced martian magnetosphere (2006)
Winningham, J. D., Frahm, R. A., Sharber, J. R., Coates, A. J., Linder, D. R., Soobiah, Y., ...
Investigations of quantum oscillations in θ- and θ(T)-(BEDT-TTF)2I3 (2006)
Nothardt, A., Balthes, E., Schmidt, W., Salameh, B., Schweitzer, D., Strempfer, J., ...
Quantum oscillation experiments were performed on Theta-(BEDT-TTF)(2)I-3 crystals. In the neat crystals used here, quantum oscillations for the a-orbit (F-alpha=780T) are already observed at a field...
Coexistence of ferromagnetic and antiferromagnetic spin correlations in La1.2Sr1.8Mn2O7 (2006)
Chatterji, T, Koza, MM, Demmel, F, Schmidt, W, Hoffmann, JU, Amann, U, ...
Structural and magnetic properties of [Er|Tb] multilayers (2006)
J. Voigt, E. Kentzinger, U. Ruecker, W. Schweika, D. Wermeille, ...
Journal article
Structural and magnetic properties of [Er|Tb] multilayers (2006)
J. Voigt, E. Kentzinger, U. Ruecker, W. Schweika, D. Wermeille, ...
Journal article
Thermonuclear supernova simulations with stochastic ignition (2005)
We apply an ad hoc model for dynamical ignition in three-dimensional numerical simulations of thermonuclear supernovae assuming pure deflagrations. The model makes use of the statistical description...
Level set simulations of turbulent thermonuclear deflagration in degenerate carbon and oxygen (2005)
Schmidt, W., Hillebrandt, W., Niemeyer, J. C.
We study the dynamics of thermonuclear flames propagating in fuel stirred by stochastic forcing. The fuel consists of carbon and oxygen in a state which is encountered in white dwarfs close to the...
High pressure diffraction studies on Ca2RuO4 (2005)
Steffens, P., Friedt, O., Alireza, P., Marshall, W. G., Schmidt, W., Nakamura, F., ...
We studied the crystal and magnetic structure of Ca2RuO4 by different diffraction techniques under high pressure. The observed first order phase transition at moderate pressure (0.5 GPa) between the...
High pressure diffraction studies on Ca2RuO4 (2005)
Steffens, P, Friedt, O, Alireza, P, Marshall, W G, Schmidt, W, Nakamura, F, ...
A survey of the state of the art of Computational Aerodynamics based on the Euler Equations is presented. For the major Euler Codes that are currently in use in the NATO countries, numerical schemes,...
INFLUENCE OF LUBRICATION ON ENDURANCE OF ROLLING CONTACTS. (2005)
BRADY,E. F., Schwartz,A., McCool,J., Valori,R., Schmidt,W.
Radiotracer wear tests were performed on the rolling ball test configuration using techniques developed previously. The progressive wear rate as a function of speed was determined for a polyphenyl...
Experimental investigation towards high throughput rapid thermal firing of EFG SI solar cells (2005)
Simulations of turbulent thermonculear burning in Type Ia supernovae (2005)
Hillebrandt, W., Reinecke, M., Schmidt, W., Röpke, F., Travaglio, C., Niemeyer, J.