R. Wegener

Details der Publikationsliste

Zeitraum

1996 - 2009

Anzahl

65

Co-Autoren

Asymptotic model for the dynamics of curved viscous fibres with surface tension (2009)

Marheineke, N., Wegener, R.

In this paper, we derive and investigate an asymptotic model for the dynamics of curved viscous inertial Newtonian fibres subjected to surface tension, as they Occur in rotational spinning processes....

Photochemical production of aerosols from real plant emissions (2009)

Th. F. Mentel, J. Wildt, A. Kiendler-Scharr, E. Kleist, R. Tillmann, M. Dal Maso, ...

Emission of biogenic volatile organic compounds (VOC) which on oxidation form secondary organic aerosols (SOA) can couple the vegetation with the atmosphere and climate. Particle formation from tree...

Photochemical production of aerosols from real plant emissions (2009)

Th. F. Mentel, J. Wildt, A. Kiendler-Scharr, E. Kleist, R. Tillmann, M. Dal Maso, ...

By emission of volatile organic compounds (VOC) which on oxidation form secondary organic aerosols (SOA) the vegetation is coupled to atmosphere and climate. New particle formation from tree...

Isoprene oxidation by nitrate radical: alkyl nitrate and secondary organic aerosol yields (2009)

A. W. Rollins, A. Kiendler-Scharr, J. Fry, T. Brauers, S. S. Brown, ...

Alkyl nitrates and secondary organic aerosol (SOA) produced during the oxidation of isoprene by nitrate radicals has been observed in the SAPHIR chamber. We find the yield of nitrates is 70±8%...

Isoprene oxidation by nitrate radical: alkyl nitrate and secondary organic aerosol yields (2009)

A. W. Rollins, A. Kiendler-Scharr, J. L. Fry, T. Brauers, S. S. Brown, ...

Alkyl nitrates and secondary organic aerosol (SOA) produced during the oxidation of isoprene by nitrate radicals has been observed in the SAPHIR (Simulation of Atmospheric PHotochemistry In a large...

Internet: www.itwm.fraunhofer.de (2008)

S. Tiwari, S. Antonov, D. Hietel, J. Kuhnert, R. Wegener

Form durch Fotokopie, Mikrofilm oder andere Verfahren zu reproduzieren oder in eine für Maschinen, insbesondere Datenverarbeitungsanlagen, verwendbare Sprache zu übertragen. Dasselbe gilt für das...

Numerical evidence for the non-existence of solutions to the equations describing rotational fiber spinning (2008)

Götz, T., Klar, A., Unterreiter, A., Wegener, R.

The stationary, isothermal rotational spinning process of fibers is considered. The investigations are concerned with the case of large Reynolds (delta = 3/Re 3 epsilon(2) no physical relevant...

Cochlear pharmacokinetics with local inner ear drug delivery using a three-dimensional finite-element computer model (2007)

Plontke, S.K., Siedow, N., Wegener, R., Salt, A.N.

Hypothesis: Cochlear fluid pharmacokinetics can be better represented by three-dimensional (3D) finite-element simulations of drug dispersal. Background: Local drug deliveries to the round window...

A stochastic model and associated Fokker-Planck equation for the fiber lay-down process in nonwoven production processes (2007)

Götz, T., Klar, A., Marheineke, N., Wegener, R.

In this paper we present and investigate a stochastic model and its associated Fokker-Planck equation for the lay-down of fibers on a conveyor belt in the production process of nonwoven materials....

Fiber dynamics in turbulent flows: Specific Taylor drag (2007)

Marheineke, N., Wegener, R.

In [N. Marheineke and R. Wegener, SIAM J. Appl. Math., 66 (2006), pp. 1703-1726], an aerodynamic force concept for a general air drag model based on a stochastic k-epsilon description for a turbulent...

Investigation of the formaldehyde differential absorption cross section at high and low spectral resolution in the simulation chamber SAPHIR (2007)

Brauers, T., Bossmeyer, J., Schlosser, E., Tillmann, R., Wegener, R., ...

The results from a simulation chamber study on the formaldehyde (HCHO) absorption cross section in the UV spectral region are presented. We performed 5 experiments at ambient HCHO concentrations with...

Investigation of the formaldehyde differential absorption cross section at high and low spectral resolution in the simulation chamber SAPHIR (2007)

Brauers, T., Bossmeyer, J., Schlosser, E., Tillmann, R., Wegener, R., ...

The results from a simulation chamber study on the formaldehyde (HCHO) absorption cross section in the UV spectral region are presented. We performed 4 experiments at ambient HCHO concentrations with...

Investigation of the formaldehyde differential absorption cross section at high and low spectral resolution in the simulation chamber SAPHIR (2007)

Brauers, T., Bossmeyer, J., Schlosser, E., Tillmann, R., Wegener, R., ...

The results from a simulation chamber study on the formaldehyde (HCHO) absorption cross section in the UV spectral region are presented. We performed 5 experiments at ambient HCHO concentrations with...

Investigation of the formaldehyde differential absorption cross section at high and low spectral resolution in the simulation chamber SAPHIR (2007)

Brauers, T., Bossmeyer, J., Schlosser, E., Tillmann, R., Wegener, R., ...

The results from a simulation chamber study on the formaldehyde (HCHO) absorption cross section in the UV spectral region are presented. We performed 4 experiments at ambient HCHO concentrations with...

Investigation of the formaldehyde differential absorption cross section at high and low spectral resolution in the simulation chamber SAPHIR (2007)

T. Brauers, J. Bossmeyer, E. Schlosser, R. Tillmann, R. Wegener, ...

The results from a simulation chamber study on the formaldehyde (HCHO) absorption cross section in the UV spectral region are presented. We performed 4 experiments at ambient HCHO concentrations with...

Investigation of the formaldehyde differential absorption cross section at high and low spectral resolution in the simulation chamber SAPHIR (2007)

T. Brauers, J. Bossmeyer, E. Schlosser, R. Tillmann, R. Wegener, ...

The results from a simulation chamber study on the formaldehyde (HCHO) absorption cross section in the UV spectral region are presented. We performed 5 experiments at ambient HCHO concentrations with...

Slender Body Theory for the Dynamics of Curved Viscous Fibers (2006)

S. Panda, R. Wegener, N. Marheineke

The paper at hand presents a slender body theory for the dynamics of a curved inertial viscous Newtonian ber. Neglecting surface tension and temperature dependence, the ber ow is modeled as a...

Fiber dynamics in turbulent flows: General modeling framework (2006)

Marheineke, N., Wegener, R.

The paper at hand deals with the modeling of turbulence effects on the dynamics of a long slender elastic fiber. Independent of the choice of the drag model, a general aerodynamic force concept is...

Fiber Dynamics in Turbulent Flows -Part I: General Modeling Framework -Part II: Specific Taylor Drag (2005)

Marheineke, N., Wegener, R.

Part I: General Modeling Framework The paper at hand deals with the modeling of turbulence effects on the dynamics of a long slender elastic fiber. Independent of the choice of the drag model, a...

Multivalued Fundamental Diagrams And Stop And Go Waves For Continuum Traffic Equations (2004)

Günther, M., Klar, A., Materne, T., Wegener, R.

In the present paper a kinetic model for vehicular traffic leading to multivalued fundamental diagrams is developed and investigated in detail. For this model phase transitions can appear depending...

1D- und 3D-Computersimulationen zur Versuchsplanung und -interpretation bei pharmakokinetischen Studien am Innenohr nach lokaler Medikamentenapplikation (2004)

Plontke, S., Siedow, N., Hahn, H., Wegener, R., Salt, A.N.

The local delivery of drugs to the cochlea is a promising alternative to systemic treatment of inner ear disorders. Whilst new drugs are being developed for this purpose, it is important to determine...

Verfahren zur Messung der Temperatur im Innern eines fluessigen oder festen Mediums (2004)

Siedow, N., Wegener, R., Lentes, F., Ohmstede, V., Wilke, T., Lotze, M.

DE 10326612 B UPAB: 20041104 NOVELTY - Process for measuring the temperature inside a liquid or solid medium comprises carrying out conducting measurements in which the electrical potential ( phi )...

Multivalued fundamental diagrams and stop and go waves for continuum traffic flow equations (2003)

Günther, M., Klar, A., Materne, T., Wegener, R.

In the present paper a kinetic model for vehicular traffic leading to multivalued fundamental diagrams is developed and investigated in detail. For this model phase transitions can appear depending...

A Kinetic Model for Vehicular Traffic Derived from a Stochastic Microscopic Model (2000)

Wegener, R., Klar, Axel

A way to derive consistently kinetic models for vehicular traffic from microscopic follow the leader models is presented. The obtained class of kinetic equations is investigated. Explicit examples...

Mathematical Models for Vehicular Traffic (2000)

Klar, Axel, Kühne, R.D., Wegener, R.

This survey contains a description of different types of mathematical models used for the simulation of vehicular traffic. It includes models based on ordinary differential equations, fluid dynamic...

Enskog-like kinetic models for vehicular traffic (2000)

Klar, Axel, Wegener, R.

In the present paper a general criticism of kinetic equations for vehicular traffic is given. The necessity of introducing an Enskog-type correction into these equations is shown. An Enskog-line...

A Kinetic Model for Vehicular Traffic: Existence of stationary solutions (1999)

R. Illner, A. Klar, H. Lange, A. Unterreiter, R. Wegener

In this paper the kinetic model for vehicular traffic developed in [3, 4] is considered and theoretical results for the space homogeneous kinetic equation are presented. Existence and uniqueness...

Enskog-like kinetic models for vehicular traffic (1997)

A. Klar, R. Wegener

In the present paper a general critisicsm of kinetic equations for vehicular traffic is given. The necessity of introducing an Enskog-type correction into these equations is shown. An Enskog-like...

Enskog-Like Kinetic Models For Vehicular Traffic (1997)

A. Klar, R. Wegener

In the present paper a general critisicsm of kinetic equations for vehicular traffic is given. The necessity of introducing an Enskog-type correction into these equations is shown. An Enskog-like...

A Kinetic Model For Vehicular Traffic Derived From A Stochastic Microscopic Model (1996)

R. Wegener, A. Klar

A way to derive consistently kinetic models for vehicular traffic from microscopic follow the leader models is presented. The obtained class of kinetic equations is investigated. Explicit examples...