8 documents found

Article / Chapter
CC BY 4.0
2020-04-29

Optical measurements on thermal convection processes inside thermal energy...

aus: Optics
Thermal energy storages (TES) are increasingly important for storing energy from renewable energy sources. TES that work with liquid storage materials are used in their most efficient way by stratifying the storage fluid by its thermal density gradient. Mixing of the stratification layers during stand-by...
Basel: MDPI, 2020-04-29
Article / Chapter
CC BY 4.0
2020-04-01

On the application of neural networks for temperature field measurements...

This study presents an investigation regarding the applicability of neural networks for temperature measurements using thermochromic liquid crystals (TLCs) and discusses advantages as well as disadvantages of common calibration approaches. For the characterization of the measurement technique, the dependency...
Berlin ; Heidelberg [u.a.]: Springer, 2020-04-01
Article / Chapter
CC BY 4.0
2019-09-10

An artificial vibrissa-like sensor for detection of flows

aus: Sensors
In nature, there are several examples of sophisticated sensory systems to sense flows, e.g., the vibrissae of mammals. Seals can detect the flow of their prey, and rats are able to perceive the flow of surrounding air. The vibrissae are arranged around muzzle of an animal. A vibrissa consists of two...
Basel: MDPI, 2019-09-10
Article / Chapter
CC BY 3.0
2019-07-05

Influence of the illumination spectrum and observation angle on temperature...

As measurements of velocity and temperature fields are of paramount importance for analyzing heat transfer problems, the development and characterization of measuring techniques is an ongoing challenge. In this respect, optical measurements have become a powerful tool, as both quantities can be measured...
Bristol: IOP Publ., 2019-07-05
Article / Chapter
2015-06-11

Thermal boundary layers in turbulent Rayleigh-Bénard convection at aspect...

We report highly resolved temperature measurements in turbulent Rayleigh–Bénard convection in air at a fixed Prandtl number Pr = 0.7. Extending our previous work (du Puits et al 2007 J. Fluid Mech. 572 231–54), we carried out measurements at various aspect ratios while keeping the Rayleigh number constant....
Dissertation
2013-05-23

Experimentelle Untersuchungen zur Anwendbarkeit der Lorentzkraft-Anemometrie...

´╗┐In times of sustainable energy savings and steadily rising commodity prices, life withoutflow measurements is unthinkable. Be it metering of waste water, or gauging at a gas station,everybody insists on paying only for what they consumed. Despite the variety ofexisting flow meters, some applications...
Diploma thesis
2004-12-02

Measurement of interface deformation and magnetic field distribution at...

An experiment for magnetic and optical measurements of a fluid-fluid interface was set up. The fluids were Galinstan and an aqueous solution of KOH (Potassium Hydroxide). A current was vertically passed through the system. The experment allowed to generate different interface modes and measurements...