Oliver Feldmann – författare

Increasing possibilities of computer-aided data processing have caused a new revival of optical techniques in many areas of mechanical and chemical engi­ neering. Optical methods have a long tradition in heat and mass transfer and in fluid dynamics. Global experimental information is not sufficient for de­ veloping constitution equations to describe complicated phenomena in fluid dynamics or in transfer processes by a computer program. Furthermore, a detailed insight with high local and temporal resolution into the thermo­ and fluiddynamic situations is necessary. Sets of equations for computer program in thermo dynamics and fluid dynamics usually consist of two types of formulations: a first one derived from the conservation laws for mass, energy and momentum, and a second one mathematically modelling transport processes like laminar or turbulent diffusion. For reliably predicting the heat transfer, for example, the velocity and temperature field in the boundary layer must be known, or a physically realistic and widely valid correlation describing the turbulence must be avail­ able. For a better understanding of combustion processes it is necessary to know the local concentration and temperature just ahead of the flame and in the ignition zone.

Stellen Sie sich New York, Tokio oder Frankfurt ohne Wolkenkratzer vor. Es ware unmoglich. Doch der limitierende Faktor fur das Wachstum unserer Stadte war jahrhundertelang nicht der Mangel an Baumaterial, sondern die menschliche Anatomie: Niemand wollte freiwillig mehr als sechs Stockwerke Treppen steigen. Erst als Elisha Graves Otis im Jahr 1853 bei einer dramatischen Prasentation in New York das Seil seines Aufzugs durchschneiden lie, um seine revolutionare Sicherheitsbremse zu demonstrieren, fiel der Startschuss fur eine vollig neue architektonische Ara. Dieses faszinierende technik-historische Sachbuch erzahlt die Geschichte einer Erfindung, die den Raum buchstablich auf den Kopf stellte. Plotzlich waren die obersten Stockwerke nicht mehr die billigen, unbequemen Kammern fur das Dienstpersonal, sondern die teuersten und begehrtesten Penthouses der Stadt. Der Autor zeichnet den rasanten Weg von den ersten dampfgetriebenen Lastenaufzugen bis zu den computergesteuerten Hochgeschwindigkeitskabinen heutiger Megaturme nach. Daruber hinaus beleuchtet das Buch die tiefgreifenden sozialen, psychologischen und wirtschaftlichen Folgen dieser vertikalen Revolution. Erfahren Sie, wie der Fahrstuhl die Immobilienmarkte weltweit veranderte, klaustrophobische Angste schurte und die soziale Hierarchie moderner Burogebaude zementierte. Ein packender Blick hinter die Kulissen der alltaglichsten und wichtigsten Transportmaschine der Welt.

Increasing possibilities of computer-aided data processing have caused a new revival of optical techniques in many areas of mechanical and chemical engi­ neering. Optical methods have a long tradition in heat and mass transfer and in fluid dynamics. Global experimental information is not sufficient for de­ veloping constitution equations to describe complicated phenomena in fluid dynamics or in transfer processes by a computer program. Furthermore, a detailed insight with high local and temporal resolution into the thermo­ and fluiddynamic situations is necessary. Sets of equations for computer program in thermo dynamics and fluid dynamics usually consist of two types of formulations: a first one derived from the conservation laws for mass, energy and momentum, and a second one mathematically modelling transport processes like laminar or turbulent diffusion. For reliably predicting the heat transfer, for example, the velocity and temperature field in the boundary layer must be known, or a physically realistic and widely valid correlation describing the turbulence must be avail­ able. For a better understanding of combustion processes it is necessary to know the local concentration and temperature just ahead of the flame and in the ignition zone.

Increasing possibilities of computer-aided data processing have caused a new revival of optical techniques in many areas of mechanical and chemical engi­ neering. Optical methods have a long tradition in heat and mass transfer and in fluid dynamics. Global experimental information is not sufficient for de­ veloping constitution equations to describe complicated phenomena in fluid dynamics or in transfer processes by a computer program. Furthermore, a detailed insight with high local and temporal resolution into the thermo­ and fluiddynamic situations is necessary. Sets of equations for computer program in thermo dynamics and fluid dynamics usually consist of two types of formulations: a first one derived from the conservation laws for mass, energy and momentum, and a second one mathematically modelling transport processes like laminar or turbulent diffusion. For reliably predicting the heat transfer, for example, the velocity and temperature field in the boundary layer must be known, or a physically realistic and widely valid correlation describing the turbulence must be avail­ able. For a better understanding of combustion processes it is necessary to know the local concentration and temperature just ahead of the flame and in the ignition zone.