The Micro-Pillar Shear-Stress Sensor MPS3 for Turbulent Flow

Große, S.; Schröder, Wolfgang

doi:10.3390/s90402222

Cited by 33 publications

(34 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The pillar is manufactured from the elastomer polydimethylsiloxane at diameter in the range of microns such that It is flexible and easily deflected by the fluid forces to ensure a high sensitivity of the sensor. A complete micropillar array allowing the assessment of the spatial wallshear stress distribution is illustrated in paper (Sebastian and Wolfgang 2009). The deflection of the pillar is detected by optical means.…”

Section: Optical Allfsmentioning

confidence: 99%

See 1 more Smart Citation

Underwater artificial lateral line flow sensors

Tan

2014

Microsyst Technol

View full text Add to dashboard Cite

on. However, there are limitations of these technologies. For example, acoustic sensor suffers from scattering and multipath propagation issues. Optic sensor cannot propagate well in water and is limited by the turbidity of the sea water. Both sensors are not suitable for forming distributed arrays. Because of these limitations, many researchers are trying to study some new alternative sensors which are inspired from biological sensing abilities, such as lateral line organ of fish. Fishes live in a fluid environment, therefore it is not surprising that fishes have developed abilities which affect numerous aspects of behaviors including maneuvering in complex fluid environments (Van Trump and McHenry 2008; Mogdans and Bleckmann 2012), schooling (Pitcher et al. 1976), prey tracking (Pohlmann et al. 2004), rheotaxis (Gardiner and Atema 2007), courtship and communication (Coombs and Braun 2003). It is known that the lateral line is a critical component of the fish sensory system and found in most fishes and some other aquatic organisms. For example, Mexican blind fish relies on the lateral line system to navigate. The lateral line plays an important role in many behaviors by providing hydrodynamic information about the surrounding fluid. The fishes use lateral line sensors to monitor surrounding flow field for maneuvering and survival underwater. This is why researchers have developed ALLFS for underwater flow sensing applications.In the following, this paper surveys the works done in investigating morphology and biophysics of the lateral line of fish, such as theoretical models of the lateral line of fish which are foundation for design ALLFS for underwater flow sensing. Also, this paper reviews the status of ALLFS and underwater applications. Finally, this paper intends to discuss the existing problems and the future trends of ALLFS.Abstract Biomimetics is a promising field of research in which natural processes and structures are transferred to technical applications. The lateral line is a critical component of the fish sensory system and plays an important role in many behaviors by providing hydrodynamic information about the surrounding fluid. It is believed that the artificial lateral line flow sensors (ALLFS) are advantageous for underwater applications. This paper reviews the morphology and biophysics of the lateral line, especially theoretical models of lateral line, including biomechanical model, frequency response and time domain response of lateral line. Also, this paper reviews some efforts to mimic lateral line system in recent years. In order to capture the recent research status, this paper reviews the design and fabrication of ALLFS based on different sensing principles. Further researches to develop ALLFS and their underwater applications are also discussed in this paper.

show abstract

Section: Optical Allfsmentioning

confidence: 99%

“…Deformation under a mechanical perturbation produces a detectable electric signal that is well correlated with the mechanical stimulus. (a) Method adopted by Klein et al 2011 (b) Method adopted by Sebastian et al 2009 Pore Pore…”

Section: Piezoelectric and Magnetic Allfsmentioning

confidence: 99%

Underwater artificial lateral line flow sensors

Tan

2014

Microsyst Technol

View full text Add to dashboard Cite

show abstract

“…The measurement principle based on arrays of hairlike flexible micro-pillars [10] on the surface has become more attractive as it can be used on curved surfaces with a sufficient resolution. Similar approaches were published earlier by Grobe S [11] and by the group of Gnanamanickam E P [12,13]. When micro-pillar shear-stress sensor (MPS3) is placed in a boundary layer flow, the pillars are bent until reaching the equilibrium between the drag force and the internal elastic strain, resulting in a tip displacement, which is directly proportional to the wall shear stress.…”

Section: Introductionmentioning

confidence: 77%

A study of directional MEMS dual-fences gauge

Ma¹,

Ma²,

Deng³

et al. 2015

10th IEEE International Conference on Nano/Micro Engineered and Molecular Systems

View full text Add to dashboard Cite

In this paper, MEMS surface fence gauges are developed to measure simultaneously the magnitude and direction of wall shear stress in wind tunnel under twodimensional turbulent boundary layers. The dual-fences are packaged together orthogonal to each other. In order to avoid the mutual influence caused by the flow field disturbance, the optimization analysis of the relative location of the two fences is carried out, and the simulation results indicate that the coupling influence between dual-fences was basically eliminated while the separation distance of two fences is four times its own length. Comparison experiments are made to verify the correctness of the flow simulation results, and the directional sensitivities of dual MEMS surface fence are calibrated, which indicated that MEMS dual-fences are equipped to distinguish direction of wall shear stress.All author are with the Key

show abstract

“…24 For wall-shear stress-measurements, the micro-pillars are flushmounted on the wall. The bending of the micro-structures in reaction to the exerted fluid forces is optically detected and serves as a representative of the local wall-shear stress.…”

Section: The Micro-pillar Shear-stress Sensor Mpsmentioning

confidence: 99%

Improvement of The Measurement Range of The Micro-Pillar Shear-Stress Sensor MPS3

Nottebrock

Klaas

Schröeder

2012

28th Aerodynamic Measurement Technology, Ground Testing, and Flight Testing Conference

View full text Add to dashboard Cite

Experiments for the quantitative assessment of the dynamic wall-shear stress distribution are still one of the major tasks in turbulence research. The micro-pillar shear-stress sensor (MPS 3 ) offers the possibility to detect this quantity. However, former investigations unveil a resonance behavior at higher Reynolds numbers. This is due to the frequency response of the sensor which is proven to be a second-order low-pass filter with low damping. The wall-shear stress measurements in a turbulent boundary layer show a frequency response of the sensor which deviates from the expected response. This can be explained by aeroelastic effects by added mass and fluid viscosity since the surrounding fluid has different constraints during the estimate of the characteristic eigenfrequency in the dynamic calibration and in the turbulent boundary layer. Nevertheless, using only a reduced frequency bandwidth out of the measured wall-shear stress-signal, the results obtained by the micro-pillar shear stress-sensor show good agreement with the literature.

show abstract

The Micro-Pillar Shear-Stress Sensor MPS3 for Turbulent Flow

Cited by 33 publications

References 47 publications

Underwater artificial lateral line flow sensors

Underwater artificial lateral line flow sensors

A study of directional MEMS dual-fences gauge

Improvement of The Measurement Range of The Micro-Pillar Shear-Stress Sensor MPS3

Contact Info

Product

Resources

About