Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Matthias Semel"'
Publikováno v:
Day 2 Tue, May 02, 2023.
The transition towards renewable energy and the electrification of various industry sectors will undoubtedly lead to higher resource demand of our society. Metals like copper, cobalt or rare-earth metals are the basis of these new technologies. Howev
Publikováno v:
Volume 1A, Symposia: Keynotes; Advances in Numerical Modeling for Turbomachinery Flow Optimization; Fluid Machinery; Industrial and Environmental Applications of Fluid Mechanics; Pumping Machinery.
In a pyrolysis plant, a mounted centrifugal compressor takes heavy damage because of erosion originating from metal particle mixed with the inlet air flow impacting its blades and volute walls. In a first step, the original impeller design as well as
Publikováno v:
Volume 1: Aircraft Engine; Fans and Blowers; Marine.
The dimensionless performances of an axial fan are derived analytically from an arbitrary work distribution. The formulation is illustrated using five different work distributions at a selected operating point and comparing the resulting hydraulic ch
Publikováno v:
Volume 1A: Aircraft Engine; Fans and Blowers.
An analytical formulation for axial fan performances at and off design point is proposed for an arbitrary work distribution. It is shown that the total pressure, total-to-static pressure and hydraulic efficiency characteristics can be described by me
Autor:
Detlev Grobeis, Philipp Epple, Henrik Smith, Oliver Litfin, Antonio Delgado, Matthias Semel, Klaus Pfannschmidt
Publikováno v:
Volume 3: Cycle Innovations; Education; Electric Power; Fans and Blowers; Industrial and Cogeneration.
In vacuum cleaners radial impellers with high rotational speed are very often used. A high rotational speed is connected with a best efficiency point of the radial impeller at a high flow rate. This is contrary to the working point of the whole syste
Publikováno v:
Volume 4: Cycle Innovations; Fans and Blowers; Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Oil and Gas Applications.
Nowadays, design, redraft and optimisation strategies of axial fans often still rely on the one dimensional mean line theory. However, as it is well known, it is based on a number of assumptions that do not apply to real flow behaviour so that variou
Publikováno v:
Volume 6: Fluids and Thermal Systems; Advances for Process Industries, Parts A and B.
Radial fans and blowers are widely used in many different fields, such as heater blowers or fans and blowers for vacuum cleaners. Although the impellers for these fans are already quite well optimized, it is possible to increase the efficiency of the
Autor:
Kais Haddad, Horst Klein, Antonio Delgado, Philipp Epple, Klaus Becker, Christian Mohr, Matthias Semel, Oliver Litfin
Publikováno v:
Volume 6: Fluids and Thermal Systems; Advances for Process Industries, Parts A and B.
In this work a wastewater pump with a two-bladed prototype impeller and a specific speed of 0.68, referring to a well-established industrial design, was simulated in a commercial CFD solver, ANSYS CFX. Simulations of the impeller only and of the comp
Publikováno v:
Volume 4: Cycle Innovations; Fans and Blowers; Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Oil and Gas Applications.
This contribution presents an inverse design method for axial flow fans validated by 3-D RANS numerical simulations. It is based on an analytical performance derivation for different free-vortex distributions combined with a mean-line pre-design tool
Publikováno v:
Volume 4: Cycle Innovations; Fans and Blowers; Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Oil and Gas Applications.
The use of axial fans is very common for industrial applications. The most common design case is the free vortex design. It ensures constant meridional velocity and hence an axi-symmetric and two-dimensional flow. Those designs have proved to be robu