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Proceedings ArticleDOI

Design and Test of a Small High Performance Diagonal Fan

TLDR
In this article, the development of two small high performance single stage diagonal fans is described and the design objectives and constraints are discussed and the aero/acoustic performance of the new fan is compared to an existing diagonal fan.
Abstract
The development of two small high performance single stage diagonal fans is described. The design objectives and constraints are discussed and the aero-/acoustic performance of the new fan is compared to an existing diagonal fan. For the aerodynamic design, the maximum flow coefficient and the maximum pressure coefficient at stall are prescribed together with geometrical constraints on outer diameter and axial space. The aerodesign is carried out using a through-flow method and 3D CFD. Two design variants are presented, a design with guide vanes for pressure recovery and a variant with struts optimized for low noise. The numerical predictions are compared to experimental data. The agreement between the predicted performance and the experimental data is sufficient for design purposes. Compared to the existing diagonal fan, the new fan shows significant improvements in terms of efficiency, performance and noise without compromising versatility and overall dimensions.Copyright © 2011 by ASME

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Proceedings ArticleDOI

Aeroacoustic optimization for axial fans with the lattice-boltzmann method

TL;DR: In this article, a set of aero-acoustic optimization strategies for axial fans is presented, where the authors consider the design of winglets using a parametric model for genetic optimization.
Journal ArticleDOI

Inverse Aeroacoustic Design of Axial Fans Using Genetic Optimization and the Lattice-Boltzmann Method

TL;DR: In this paper, an inverse design methodology driven by a genetic algorithm is proposed to find the fan geometry for a set of given objectives, such as sound pressure frequency spectrum, aerodynamic efficiency, pressure head and flow rate.
Journal ArticleDOI

Development of a High Efficiency In-Line Tube Fan Using CFD

TL;DR: In this article, an in-line tube fan with design flow rate 1 m3/s, static pressure 1030 Pa, rotation speed 3450 rpm, and specific speed 2.1 was investigated.
Journal ArticleDOI

Kühlung und Entfeuchtung von LED-Scheinwerfern

TL;DR: In this article, robuste kleine Gleichstromluefter, die speziell auf die Belange des LED-Scheinwerferbetriebs abgestimmt wurden and die fuer die zuverlaessige Abfuhr der ueberschuessigen Waerme sorgen.
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