Frank Kameier

Frank Kameier
Hochschule Düsseldorf · Faculty of Mechanical and Process Engineering

Dr.-Ing.

About

77
Publications
13,653
Reads
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671
Citations
Citations since 2016
29 Research Items
418 Citations
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
Introduction
Skills and Expertise
Additional affiliations
April 1988 - January 1994
Technische Universität Berlin
Position
  • Research Assistant

Publications

Publications (77)
Conference Paper
Leading edge serrations are well known for their ability to reduce turbulence-induced noise of single aerofoils while also providing aerodynamic advantages under certain operating conditions. Continuatively, applying leading edge serrations to rotating machinery such as axial fans proved the validity to generally transfer the obtained aeroacoustic...
Conference Paper
Heavy-duty centrifugal fans require high reliability and first-class performance. Besides, extreme conditions and harsh environments are often encountered, such as in the papermaking process, in steel or cement plants or the chemical and petrochemical industry. Therefore, the design of high performance heavy-duty industrial fans requires robust yet...
Article
Leading edge serrations are well known for their ability to reduce turbulence-induced noise of single airfoils while also providing aerodynamic advantages under certain operating conditions. Continuatively, applying leading edge serrations to rotating machinery such as axial fans proved the validity to generally transfer the obtained aeroacoustic b...
Conference Paper
With a special focus on the industrial feasibility and the manufacturability, a recently proposed novel approach to centrifugal impeller blade inclination is adopted and investigated through extensive CFD analysis. The fan blades, originally aligned perpendicular to the impeller backplate, are inclined in either forward or backward direction. For t...
Article
Full-text available
The dominant aeroacoustic mechanisms of serrated leading edges, subjected to highly turbulent inflow conditions, can be compressed to spanwise decorrelation effects as well as effects of destructive interference. For single aerofoils, the resulting broadband noise reduction is known to follow spectral scaling laws. However, transferring serrated le...
Article
Leading edge serrations are identified as an effective passive treatment for reducing fan broadband noise due to high turbulent inflow conditions. This paper aim to investigate the isolated effect of serrated applications in a rotating frame, covering the aerodynamic and aeroacoustic performance. With this purpose, a serration design, previously an...
Article
Serrated leading edges are well-known for their ability to reduce leading edge broadband noise at highly turbulent inflow conditions. For maximum effect, special care needs to be taken in the selection of the geometric parameters. To date, several extensive studies of numerical and experimental nature are available, focusing on the identification o...
Conference Paper
Leading edge serrations are identified as an effective passive treatment for reducing fan broadband noise due to high turbulent inflow conditions. This paper aim to investigate the isolated effect of serrated applications in a rotating frame, covering the aerodynamic and aeroacoustic performance. With this purpose, a serration design, previously an...
Article
Full-text available
The effect of multiple process parameters on a set of continuous response variables is, especially in experimental designs, difficult and intricate to determine. Due to the complexity in aeroacoustic and vibroacoustic studies, the often-performed simple one-factor-at-a-time method turns out to be the least effective approach. In contrast, the stati...
Conference Paper
At high-turbulent inflow conditions, the blades of axial fans are known to emit a significantly increased amount of leading edge broadband noise. Recent research has firmly confirmed leading edge serrations to be an effective passive treatment in noise reduction. Up to now, leading edge serrations are mainly analysed in rigid test settings. With th...
Conference Paper
Aerofoils subjected to leading edge serrations have been in the focus of several recently published studies. Especially when it comes to inflow conditions of high turbulence, serrations have proofed to be of high aeroacoustic effect. Aerodynamically, serrations are known to reduce the total lift but lead to a delay of the stall angle as well as to...
Conference Paper
Full-text available
With the aim of analysing the efficiency of leading edge serrations under realistic conditions, an experimental rig was developed where a ducted low-speed fan is installed that allows to gather data of both, aerodynamic and aeroacoustic nature. Turbulent inflow conditions were generated via biplane-square grids, resulting in turbulence intensities...
Conference Paper
This paper deals with the reduction of aerodynamically generated noise in passenger car Cooling-Fan-Modules (CFM), caused by the interaction between the impeller and the downstream-located strut configuration of the axial fan. Even after the car engine is switched off, the fan remains active, as long as cooling is required for certain vehicle compo...
Conference Paper
The effect of multiple process parameters on a set of continuous response variables is, especially in experimental designs, difficult and intricate to determine. Due to the complexity in aeroacoustic and vibroacoustic studies, the often-performed simple one-factor-at-a-time method (OFAT) turns out to be the least effective approach. In contrast, th...
Conference Paper
Full-text available
Unter hochturbulenter Anströmung stellt breitbandiger Vorderkantenlärm der Schaufeln eine signifikante Schallquelle von Axialventilatoren dar. Zur Reduktion der abgestrahlten Schallemissionen zeigen Leading Edge Serrations ein vielversprechendes Potential. Zur experimentellen Untersuchung eines Niederdruck-Axialventilators mit Leading Edge Serratio...
Conference Paper
Full-text available
Zur Charakterisierung der aerodynamischen und aeroakustischen Eigenschaften eines Axialventilators unter hochturbulenten Zuströmbedingungen wird im Regelfall das gesamte arbeitsspezifische Kennfeld mit Messpunkten äquidistanter Schrittweite untersucht. Mit der Frage, inwiefern man mit Hilfe statistischer Methoden einen gleichwertigen Erkenntnisgewi...
Conference Paper
The acoustical characteristics of cooling fans are an essential criterion of product quality in the automotive industry. Fan modules have to suffice growing customer expectations which are reflected in the comfort requirements set by car manufacturers around the world. In order to locate dominant acoustic sources and to reduce the noise emission ge...
Conference Paper
Full-text available
Recent research confirmed leading edge serrations to be an effective passive noise reduction treatment for aerofoil broadband noise at high-turbulent inflow conditions. Therefore, reducing leading edge broadband noise while maintaining acceptable aerodynamic aerofoil performance represents a pressing task for future applications. In this context, a...
Article
Full-text available
With the objective of reducing the broadband noise from the interaction of highly turbulent flow and airfoil leading edge, sinusoidal leading edge serrations were investigated as an effective passive treatment. An extensive aeroacoustic study was performed to determine the main influences and interdependencies of factors, such as the Reynolds numbe...
Article
Full-text available
Aerodynamic noise embraces the disciplines of acoustics and aerodynamics. For the flow around bluff bodies, the primary source of aerodynamic noise generation is vortex shedding. The alternately separating vortices, which constitute the cause of lift forces on the upstream bluff body act as pressure dipole and induce pressure differences in the sur...
Conference Paper
Full-text available
Sinusoidal leading edge serrations of a cambered NACA65(12)-10 aerofoil were analysed with the aim of reducing leading edged broadband noise emissions due to aerofoil-gust-interaction in a high turbulent flow. A statistical-empirical model was developed to quantify the main effect as well as the interdependencies of flow and design parameters on th...
Conference Paper
The acoustical characteristics of fans are an essential criterion of product quality and are continually growing in importance as for example cooling fan modules in the automotive industry have to suffice high comfort requirements. In order to locate dominant acoustic sources and to reduce the noise emission generated by a shrouded fan configuratio...
Conference Paper
The unsteady flow field in the blade tip region of axial flow machines can be neither measured nor numerically calculated with all relevant details for noise generation and blade vibration inception. The visualization of vortex structures to confirm the generation mechanisms for sound and vibration in rotating machinery is difficult with respect to...
Conference Paper
Full-text available
The unsteady flow field in the blade tip region of axial flow machines can be neither measured nor numerically calculated with all relevant details for noise generation and blade vibration inception. The visualization of vortex structures to confirm the generation mechanisms for sound and vibration in rotating machinery is difficult with respect to...
Conference Paper
Full-text available
Durch die Interaktion einer turbulenten Anströmung mit der Vorderkante eines flachen umströmten Körpers können signifikante breitbandige Schallemissionen auftreten. Insbesondere bei umströmten Tragflächen ist dies ein oft beschriebenes Phänomen (Aerofoil-Gust-Interaction Noise). Gerade im Hinblick auf Anwendungsgebiete wie Axialverdichter, Turbinen...
Article
Full-text available
With the objective of energy harvesting by use of vortex induced vibrations on a cylinder/plate configuration different approaches for maximising the amplitude of oscillation modes were pursued. By investigating the sound emissions of a small-scale cylinder/plate setup, a maximisation of the vortex-induced wall-forces on a rigidly mounted cylinder...
Conference Paper
Full-text available
When a cylinder is exposed to a uniform flow, vortices are shed alternately from either side of the cylinder into the wake (the so called Kármán vortex street). In a certain range of the Reynolds number the shedding frequency is dominant in the narrow band spectrum of an acoustic measurement and can be noticed as a whistling sound. The noise emissi...
Conference Paper
Full-text available
A high-efficiency centrifugal fan with low noise emission is used to investigate the influence of the casing width on the flow performance. Common design concepts use a width ratio of casing to impeller outlet from 2.5 up to 3. This range of the width ratio results in a large casing depth, which is not the best approach with regard to the overall d...
Poster
Full-text available
For the most part the noise production of wind energy plants is well documented and manufacturers already introduced numerous reduction methods for the most common and obvious noise problems. However there still is a significant number of reports by people claiming to be disturbed by nearby wind energy plants. This work shows the results of extensi...
Conference Paper
Full-text available
Generators based on dielectric electroactive polymers (DEAP) convert mechanical strain energy into electrical field energy. In order to harvest renewable energy from ambient sources adequate generator setups have to be developed. Thus, in this contribution a DEAP generator is presented which uses periodic vortex induced vibration of a circular cyli...
Conference Paper
Full-text available
Im Nachlauf eines Zylinders bildet sich abhängig von der Anströmgeschwindigkeit eine periodische Wirbelschleppe aus, die auch als Kármánsche Wirbelstraße bekannt ist. Die Wirbelablösung verursacht Druckschwankungen auf der Zylinderoberfläche, die sich mit Schallgeschwindigkeit ausbreiten und die Charakteristik eines Dipols aufweisen. Das Einbringen...
Conference Paper
Full-text available
Wird ein Zylinder einer Strömung ausgesetzt, bildet sich in dessen Nachlauf eine periodische Wirbelschleppe aus, die auch als Kármánsche Wirbelstraße bekannt ist. Die am Zylinder wirkenden Oberflächenkräfte führen zu Druckschwankungen die sich mit Schallgeschwindigkeit in Form eines Dipols ausbreiten und akustisch als Pfeifton oder eng. Aeolian ton...
Conference Paper
Full-text available
Im Rahmen einer studentischen Projektarbeit an der Fachhochschule Düsseldorf wurden Luft- und Körperschallimmissionen von Windenergieanlagen gemessen und genauer untersucht. In der Regel legen akustische Untersuchungen von Windenergieanlagen den Fokus auf den abgestrahlten Schall im Rahmen von Genehmigungsverfahren und der Erfüllung gesetzlicher Vo...
Conference Paper
Full-text available
The enforcement of flow induced oscillations of a spring mounted circular cylinder (dcyl) due to the presence of a fixed square cylinder (ds.cyl) is investigated. An integrated approach takes place by means of 2D CFD simulations and experimental studies in the wind tunnel. The results show that a reduction of the square cylinder distance (g) leads...
Article
This article deals with the question to what extend an interested private person is able to inform about the existence of low noise tyres for a certain car. To answer this question faked consultations are evaluated, homepages of tyre manufacturers are reviewed, test reports are consulted and the "Reifenlabel" is introduced and discussed as a new so...
Article
Full-text available
Aerodynamically generated noise can be amplified enormously by the insertion of a plate behind a cylinder. In this work, the aeroacoustic sound generation of a cylinder plate configuration placed in a steady flow has been investigated experimentally. The amplification of the generated sound is quantified, and the condition for the amplification is...
Article
Within the framework of a development project a silencer was designed for a paper mill to meet high requirements for noise protection of nearby residents. The focus was on reducing predominant tonal noise propagating from two vacuum pumps that dehydrate the mixture of water and fibres during the manufacturing process. Due to highly humid air, paper...
Article
Drilling during temporal bone surgery may result in temporary or permanent noise-induced hearing loss or tinnitus. This has practical implications for both the patient and the surgeon. Different surgical drill devices, routinely used in temporal bone surgery, are examined referring to their emitted sound levels and sound transport. Two surgical dri...
Article
Full-text available
Die Staulippe befindet sich an Fahrzeugen unterschiedlicher Automobilhersteller am Unterboden jeweils vor den Rädern. Ihre akustische Wirkung im Fahrzeuginnenraum wird im Rahmen einer Untersuchung der FH Düsseldorf und BMW mit Druckschwankungen an der Fahrzeugau:sBenseite korreliert, um den Ent stehungsmechanismus von Geräuschen und strömungsinduzi...
Article
Different vehicle manufacturers mount an air dam on the vehicle undercarriage just in front of the wheels. For better understanding of the noise generation mechanisms and flow induced vibrations directly at their source region, the acoustical effects in the interior of the vehicle will be correlated by the University of Applied Sciences Duesseldorf...
Article
During the development of the BR710 jet engine audible combustor instabilities (termed ‘rumble’) occurred. Amplitudes measured with test cell microphones were up to 130 dB at around 100 Hz. Disturbances of this amplitude are clearly undesirable, even if only present during start-up, and a research program was initiated to eliminate the problem. Pre...
Conference Paper
An experimental study is presented to investigate the aeroacoustic generation mechanism of the tip clearance noise in axial turbomachines. In addition to the increased broadband levels reported in the literature when the tip clearance is enlarged, significant level increases were observed within narrow frequency bands below the blade passing freque...
Article
An experimental study is described to investigate the negative effects of the tip clearance gap on the aerodynamic and acoustic performance of axial turbomachines. In addition to the increased broadband levels reported in the literature when the tip clearance is enlarged, significant level increases were observed within narrow frequency bands below...
Article
Full-text available
When the tip clearance is small and the blade number is high, fan pressure and efficiency are highest, the useful range of the fan performance curve is widest, and the specific fan sound power level to the right of the stall line is lowest. Reducing the blade number results in lower fan pressure and efficiency and higher specific sound power in the...
Conference Paper
Full-text available
An experimental study is described to investigate the negative effects of the tip clearance gap on the aerodynamic and acoustic performance of axial turbomachines. In addition to the increased broadband levels reported in the literature when the tip clearance is enlarged, significant level increases were observed within narrow frequency bands below...
Article
The article describes a design feature that can reduce the sound emission of axial flow machines by up to 11 dB (A) (specific sound level), whilst improving the efficiency by seven percentage points. This improvement can be carried out on equipment that is already in use, as well as on new designs. The gap between the rotating blades and the fixed...
Conference Paper
Full-text available
An experimental investigation to identify the aeroacoustic generation mechanism of the tip clearance noise of axial turbomachines is presented. Results of an ongoing study into the nature of the tip clearance noise are discussed. Some experimental observations regarding a hysteresis-type behavior of the aerodynamic fan performance and rotating stal...
Article
The abandonment of a student project in the course "Flow Acoustics" at the University of Applied Sciences Duesseldorf was to detect leakages in a duct. For data acquisition and analysis their were used a standard computer equipped with an educational version of DASYLab 5.6. The two low cost miniature microphones were conected to a well performed bu...

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Projects (2)
Project
Using both numerical and experimental methods, the current project aims at optimising heavy duty centrifugal fans in terms of aerodynamic performance, structural mechanics as well as aeroacoustic radiation. Special attention needs to be directed towards the high endurance, manufacturability and industrial applicability of potential solutions. To extract and pinpoint optimum solutions, the experimental and numerical results are post-processed using artificial neural networks.